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Featuring high quality AGC glass from Japan, MRC-8 and water and dust repelling nano coating layers, the Breakthrough Photography x2 is the gold standard filter for the discerning professional photographer. Available in either 3-stop or 6-stop, the x2 ND features a weather-sealed traction frame which makes getting filters on-and-off a whole lot easier. In addition to having professional optical performance, x2 features state-of-the-art multi-resistant coating. Four layers of state-of-the-art MRC are applied to each side of the optical disk, resulting in a total of 8 MRC layers. MRC coatings are structurally harder than the glass itself, which increases durability of the optical surfaces by increasing scratch resistance. Incredibly durable. By design. Each X2 ND filter is CNC machined with very narrow tolerances, and manufactured with an incredibly low threshold for defects and a strict quality control process. The result: each and every x2 ND filter is built to last at least 25 years, if not beyond a human lifetime. Less has never been more. The x1 features a 3.5mm ultra-slim double-threaded Traction frame profile to eliminate vignetting on wide-angle full-frame setups. Why 3.5mm? Tests show that the 4mm is the frame width at which point vignetting becomes noticeable on 16mm wide-angle setups on full-frame cameras. But any lower than 3 and lens caps and such don't stay on. At 3.7mm vignetting was entirely eliminated. Double-Threaded & Laser Engraved. x2's 3.5mm frame still accepts all lens caps just fine but also stays below the 3.7mm. Laser engraved lettering in the x2 Traction frame ensure that the lettering won't ever fade or come off even after consistent use. Breakthrough also engraves each and every x2 Traction frame with a unique serial number. When you activate your 25 Year Ironclad Guarantee, Breakthrough associates your x2 serial number to you, so any future discussions on this unique filter are tracked, issues recorded and all that stuff which goes into future product design. Weather-sealed durability. If you want to ensure that your lens maintains out-of-box optical performance for as long as possible, Canon, Nikon and Sony recommend protective filters for the purpose of completing a lens weather-seal. Without a filter, the lens is not dust or water resistant, as Canon states on page 2 of their lens user manuals.

Breakthrough Bridge Declarer Play for Be [Paperback] Zia Mahmood (Author) 144 pages Publisher: Stoddart+publishing (August 1990)

A hand-inspected Used copy of "Conformation and Performance" by Nancy S. Loving. Ships directly from Textbooks.com

Introducing the World's Sharpest GND. 100% Guaranteed We took our industry leading X4 ND filter and applied the same proven technology to the graduated neutral density filter, manufactured it with tempered SCHOTT B270 optical glass made in Germany and the result is the X4 GND - the world's sharpest and most color neutral GND, guaranteed. What is a GND? GND is short for Graduated Neutral Density filter, which is a rectangular filter which increases the dynamic range of your camera. Shooting a sunset with a GND filter transforms a photograph from having blown out highlights to one with incredible dynamic range and it does this in-camera, without the need for Photoshop, stacking multiple frames or HDR. How It Works Outdoor photographers frequently struggle with dynamic range, as the human eye has a dynamic range over 20-stops, while a mid-day outdoor scene may range between 15-18 stops. Professional camera systems range between 12-14 stops and during the last decade very little expansion progress has been made to increase dynamic range closer to what the human eye sees. Expand your dynamic range in-camera If a sunset scene has a total of 17-stops between the sky and the foreground and the camera has 13-stops of in-camera dynamic range, a 2-stop soft GND and 3-stop hard reverse GND would cover that exposure gap (12 + 2 + 3 = 17) range is usually 15+ stops, which is currently too far beyond the capability of modern sensors. Another way to think about it is that a GND filter expands in-camera dynamic range by decreasing highlight zones, similar to how the Zone System by Ansel Adams works in the darkroom.A post-processing technique such as HDR could be used to give the impression of expanded dynamic range, but you can lose the long exposure component that is often times so central in the best sunset scenes. Legendary landscape photographer Galen Rowell developed the GND filter with Bob Singh of Singh-Ray filters and together they pioneered a method for covering the dynamic range gap of 35mm film. A New Generation of GND Singh-Ray's line of American-made GND filters have been the industry leader for decades, delivering unparalleled color neutrality. Singh-Ray's use of high quality CR-39 optical resin also provided unparalleled resolving power. The X4 GND introduces a new era of durability and resolving power by using SCHOTT B270 optical glass, made in Germany and it's the world's first tempered glass GND. The result is an incredibly durable filter glass that doesn't break even when dropped onto hard surfaces. Incredible Durability Another benefit is that the optical surface does not degrade over time or with exposure with corrosive elements such as salt water and sand, common conditions for outdoor photographers. The X4 GNDs impressive structural hardness also prevents warping, a common issue that develops over time with traditional resin filters, especially when not stored flat. Slightly warped GNDs can add...

If you're a professional photographer seeking the pinnacle of UV filters, the 62mm X2 UV Traction Filter is your perfect match. This high-performance filter, crafted with superior AGC glass from Japan, is designed to enhance your photography experience by delivering stunningly sharp and vivid images. The X2 UV Traction Filter boasts some of the world's highest resolving optical glass - AGC glass, made in Japan. This ensures that your images are captured with the utmost clarity and detail. The state-of-the-art 8-Layer Multi-Resistant Coating (MRC8) process hardens both optical surfaces, increases light transmission, reduces reflections, and achieves true color neutrality while maximizing contrast fidelity. The X2's MRC coatings are structurally harder than the glass itself, enhancing the durability of the optical surfaces by increasing scratch resistance. This feature makes the X2 UV Traction Filter a reliable choice for photographers who demand longevity and resilience from their equipment. The X2 Traction frame, precisely engineered by Breakthrough Photography, redefines form and function. It's designed for easy, secure attachment and removal, ensuring that you can switch filters quickly and efficiently. Each X2 filter is CNC machined with very narrow and precise tolerances, a testament to Breakthrough's commitment to superior craftsmanship. The X2's nanotec Nano Coating layer repels dirt, water, and other elements, making it easier and quicker than ever to clean. This feature ensures that your filter remains in optimal condition, ready to capture the perfect shot at a moment's notice. The X2's ultra-slim 3.5mm double-threaded Traction Frame design eliminates vignetting on wide-angle full-frame setups. This super thin frame also reduces light falloff, ensuring that your images are evenly lit from edge to edge. The X2's Traction Frame is laser engraved with a unique serial number, providing a personalized support experience and allowing Breakthrough to verify the authenticity of your filter. This feature gives you the peace of mind that you're using a genuine Breakthrough product. The X2 UV Traction Filter is also weather-sealed for enhanced durability. This feature ensures that your lens maintains its out-of-box optical performance for as long as possible, making the X2 an essential addition to your photography gear if you're using Canon, Nikon, or Sony lenses. In summary, the 62mm X2 UV Traction Filter is a high-quality, durable, and performance-enhancing tool that every professional photographer should consider adding to their kit.

Let the 4x5.65" X4 ND 8-Stop Cinema Filter revolutionize your photography and videography experience. This solid neutral density filter offers an exposure reduction, enabling a comprehensive darkening of your entire image. This unique feature allows you to experiment with slower shutter speeds than typically necessary, providing you with the creative freedom to manipulate depth of field and convey movement with ease.Crafted from premium SCHOTT B270 optical glass, this cinema filter ensures superior image quality without compromising on sharpness or clarity. It's further enhanced with MRC16 and nanotec Nano Coatings, designed to repel elements such as water and dust, making it an ideal choice for outdoor shoots in challenging environments.Standout as the world's first tempered cinema filter, the X4 ND 8-Stop Cinema Filter boasts an exceptional durability that can withstand the rigors of professional use. The tempered filter glass is robust enough to survive drops onto concrete and sharp objects, ensuring longevity and reliability in your photography gear.Whether you're a seasoned professional or an aspiring filmmaker, the 4x5.65" X4 ND 8-Stop Cinema Filter is a versatile tool that can help you capture stunning visuals with greater control and precision.

Under the umbrella of professional-grade photography equipment, the 4x5.65" X4 ND 2-Stop Cinema Filter stands out as a high-quality, durable, and effective tool for photographers and videographers alike. Crafted by Breakthrough Photography, a brand synonymous with excellence in the industry, this filter is designed to provide a significant reduction in light exposure, enabling greater control over your camera's shutter speed and aperture settings.The X4 ND 2-Stop Cinema Filter is a solid neutral density filter that darkens the entire image, facilitating the use of slower shutter speeds than typically required. This feature allows photographers to manipulate depth of field and convey movement with ease, making it a versatile addition to any professional's toolkit.Constructed from SCHOTT B270 optical glass, this filter is not only high-performing but also incredibly resilient. It features MRC16 and nanotec Nano Coatings, which actively repel elements such as water and dust, ensuring the longevity of the filter and the quality of your images.Notably, the X4 ND 2-Stop Cinema Filter is the world's first tempered cinema filter. This means that the filter glass has undergone a tempering process to enhance its durability, making it robust enough to withstand impacts from dropping onto concrete or sharp objects. Despite its strength, the filter does not compromise on image quality, maintaining sharpness and clarity in every shot.Whether you're shooting in low light conditions or aiming to create a shallower depth of field, the 4x5.65" X4 ND 2-Stop Cinema Filter is an invaluable asset for achieving the perfect shot.

Overcome the challenges of outdoor photography with the innovative 77mm 3-Stop Dark Circular Polarizer Filter from Breakthrough Photography. This high-quality filter combines the functionalities of a Neutral Density (ND) and Circular Polarizer (CPL) filter, aptly named a 'Dark CPL'. Outdoor photographers often find themselves stacking ND and CPL filters to achieve the desired image quality. However, this method often leads to vignetting at 16mm on a full-frame setup. Breakthrough Photography has ingeniously merged their X4 ND and X4 CPL into a single filter, the Dark CPL, effectively eliminating this issue. The Dark CPL filter is designed to reduce reflections and glare, enhance contrast and saturation, and improve overall image quality. It works by filtering out horizontally polarized light, which is often responsible for the glare and reflections in an image. By reducing this type of light, the Dark CPL filter significantly improves the overall contrast and saturation of an image, while also reducing lens flare and ghosting.This versatile filter is compatible with a wide range of camera and lens systems, including Leica, Carl Zeiss lenses, Schneider Xenon, Canon Cinema and L lenses, Nikon, Sony, and Fuji among others. Its durable construction ensures it can withstand the rigors of regular use, making it an essential tool for any serious photographer. Experience the convenience of two filters in one with the 77mm 3-Stop Dark Circular Polarizer Filter, and take your outdoor photography to the next level.

An embodiment of superior craftsmanship and innovative technology, the 77mm X4 UV Traction Filter is designed to deliver unparalleled image quality and protection for your camera lens. Engineered with a robust brass frame, this filter offers enhanced durability and a solid feel, outperforming alternatives made from aluminum or plastic. The X4 UV Traction Filter boasts Schott Ultrawhite B270 optical glass, manufactured in Germany, renowned for its exceptional clarity and precision. This high-quality glass, coupled with Breakthrough Photography's advanced multi-resistant coating (MRC16), ensures a remarkable light transmission rate of 99.4%. This combination not only enhances image quality but also creates a protective layer that's structurally harder than the glass itself, safeguarding your lens from potential damage.Incorporating nanotec nano coating layers on both sides, the X4 UV filter excels in repelling dirt, water, and other elements. This innovative coating promotes beading rather than absorption, facilitating faster and easier cleaning. The X4 UV filter's design is a testament to Breakthrough Photography's commitment to functionality and durability. The filter's full traction texture around its entire circumference ensures secure attachment and removal, reducing the risk of accidental drops or slips. The X4 UV filter also features an ultra-slim double-threaded 3.2mm Traction Frame. This design eliminates vignetting and light falloff on full-frame wide-angle setups, while still accommodating all your lens caps. In addition to its superior design and materials, every X4 UV filter comes with a unique serial number laser engraved onto the interior frame. This number is assigned to you upon activation of your 25 Year Ironclad Guarantee, simplifying any future support interactions with Breakthrough Photography. With the 77mm X4 UV Traction Filter, you're not just investing in a high-quality camera accessory, but also contributing to a better world. Breakthrough Photography donates 5% of every sale directly to non-profits, reinforcing their commitment to making a positive impact. In summary, the 77mm X4 UV Traction Filter is a professional-grade, high-quality, and durable camera accessory designed to enhance your photography experience while providing robust protection for your lens.

Before venturing into the great outdoors or setting up for a professional photo shoot, safeguard your camera lens with the Breakthrough Photography 77mm X2 UV Traction Filter. This premium filter is the epitome of optical excellence, featuring high-quality AGC glass from Japan, renowned for its exceptional clarity and resolving power. The X2 UV filter boasts an advanced 8-Layer Multi-Resistant Coating (MRC8) that enhances light transmission, minimizes reflections, and ensures true color neutrality, all while maximizing contrast for unparalleled image fidelity.Crafted with precision, the X2 Traction frame is CNC machined to exacting tolerances, ensuring each filter meets the highest standards of craftsmanship. The innovative traction design allows for quick and secure attachment or removal, providing photographers with a user-friendly experience. The ultra-slim 3.5mm double-threaded frame is meticulously engineered to prevent vignetting on wide-angle full-frame lenses, ensuring your images remain crisp and clear from edge to edge.Durability is at the core of the X2 UV Traction Filter's design. The state-of-the-art MRC8 process hardens the optical surfaces, significantly enhancing scratch resistance and longevity. The nanotec Nano Coating layer on the filter repels water, dust, and other elements, facilitating a swift and effortless cleaning process that keeps your images spotless.The attention to detail extends to the laser-engraved lettering on the traction frame, which guarantees that identification marks will remain intact through rigorous use. Each filter is also uniquely serialized, allowing for personalized support and verification of authenticity, ensuring you receive a genuine product backed by Breakthrough Photography's 25 Year Ironclad Guarantee.For photographers who demand the best in weather-sealed protection, the X2 UV Traction Filter is an essential accessory. It completes the weather-sealing of lenses as recommended by leading manufacturers like Canon, Nikon, and Sony, providing peace of mind that your lens will retain its out-of-box optical performance in any environment. Whether you're capturing landscapes, portraits, or any subject in between, the 77mm X2 UV Traction Filter delivers high-quality, durable, and slim protection without compromising on image quality.

Bring your outdoor photography to the next level with the Breakthrough Photography 77mm X4 ND Traction Filter. Engineered for the most discerning photographers, this 6-stop neutral density filter boasts unparalleled color neutrality, allowing you to capture the true essence of your surroundings without unwanted color casts.Crafted with SCHOTT Superwhite B270 optical glass, the X4 ND filter offers exceptional clarity and light transmission across the ultraviolet, visible, and infrared spectrums. The high surface quality of this ultra-clear crown glass is optimized for advanced coating adhesion, ensuring that every shot maintains its integrity and vibrance.The innovative MRC16 coating technology applied to both sides of the glass reduces reflections and enhances durability. This multi-resistant coating is structurally harder than the glass itself, minimizing light loss and boosting image contrast by eliminating stray light. The result is a filter that not only improves image quality but also stands up to the rigors of fieldwork.Designed to endure, the X4 ND filter is double-threaded and weather-sealed, ready to face extreme conditions from wind and saltwater to dust and abrasive elements. The state-of-the-art nanotec Nano Coatings further repel water and other substances, preventing absorption and smearing for a pristine image every time.The filter's breakthrough design features a traction frame, which provides an innovative, user-friendly experience. The high-quality brass CNC machined frame ensures easy attachment and removal, even when wearing gloves in challenging weather conditions.Breakthrough Photography's commitment to quality is evident in their 25 Year Ironclad Guarantee, offering US-based support through phone, email, and live chat. Register your X4 ND filter's serial number on their website to activate this unparalleled support commitment.In summary, the 77mm X4 ND Traction Filter is the epitome of durability, high-quality, effectiveness, reliability, and innovation. It's the ideal choice for photographers who demand the best in color fidelity and filter performance. With its superior construction and advanced technology, this filter is set to become an essential tool in your photography kit, ensuring that every shot is captured with the utmost precision and clarity.

Discover the pinnacle of photographic precision with the 77mm X2 ND Traction Filter, a must-have accessory for the serious photographer seeking unparalleled image quality and durability. Crafted with premium AGC glass from Japan, this filter boasts an advanced MRC-8 coating, providing eight layers of anti-reflective and protective coating to each side of the glass. This multi-resistant coating not only enhances light transmission but also fortifies the filter against scratches, ensuring your images remain crystal clear.The 6-stop neutral density (ND) feature of the X2 ND Traction Filter allows for greater control over exposure settings, enabling the capture of motion with silky smoothness and without sacrificing image sharpness. Whether you're photographing cascading waterfalls or bustling cityscapes, this filter provides the creative flexibility to convey movement in your stills.Engineered for ease of use and reliability, the weather-sealed traction frame of the X2 ND Filter ensures a secure grip and effortless attachment or removal from your lens. The innovative traction design is a testament to Breakthrough Photography's commitment to functional and user-friendly products.The X2 ND Filter's construction is a testament to precision engineering. Each filter is CNC machined to exacting tolerances and subjected to a rigorous quality control process. This meticulous attention to detail guarantees that every filter meets the highest standards of quality, promising a lifespan of at least 25 years.Designed with the professional in mind, the X2 ND Filter features a 3.5mm ultra-slim, double-threaded traction frame profile. This thoughtful design eliminates vignetting, even on wide-angle full-frame setups, while still accommodating lens caps and accessories. The frame's laser-engraved lettering ensures that identification marks remain intact through years of use, and each filter is uniquely serialized for easy reference and registration with Breakthrough Photography's 25 Year Ironclad Guarantee.For photographers who demand the best in weather-sealed protection, the X2 ND Filter completes the weather-seal on lenses as recommended by leading camera manufacturers like Canon, Nikon, and Sony. This filter is the final component in safeguarding your lens against the elements, ensuring that it maintains its pristine optical performance over time.Elevate your photography with the 77mm X2 ND Traction Filter, and experience the confidence of shooting with a filter that's built to withstand the rigors of professional use while delivering exceptional image quality.

Discover the unparalleled performance of the 82mm X4 ND Traction Filter, a product of Breakthrough Photography's innovative manufacturing methods. This filter is a must-have tool for the discerning outdoor photographer, offering the most color-neutral ND filter experience on the market. The X4 ND filter is crafted with SCHOTT Superwhite B270 optical glass, an ultra-clear crown glass produced from high-purity raw materials using a continuous draw process. The result is a filter with exceptional transmission in the ultraviolet, visible, and infrared spectrums, and a high surface quality that is perfect for accepting coatings. The filter features Breakthrough Photography's state-of-the-art multi-resistant coating (MRC16), an optical coating applied to both surfaces of the glass disk to reduce reflection and increase surface durability. This proprietary MRC coating is structurally harder than the glass itself, and the reduced reflections improve the efficiency since less light is lost. The result is better contrast and color in your images.Designed as a workhorse ND filter for field work, the X4 ND is built to withstand extreme wind, salt water, dust, and other abrasive conditions and elements. It incorporates Breakthrough Photography's state-of-the-art nanotec Nano Coatings Technology, which repels water and other elements rather than absorbing and smearing, ensuring your filter remains clean and clear even in challenging conditions.The X4 ND filter also boasts a breakthrough design with traction. The filter frame, constructed of high-quality brass and CNC machined with Breakthrough Photography's signature traction frame, is easy to attach and remove securely, even with gloves on in cold conditions. The X4 ND filter is the most color-neutral and has the flattest transmission curve of any ND filter, guaranteed. It maintains a very well controlled and flat transmission all the way throughout the visible spectrum and into IR, ensuring your images are free from color cast. Register your X4 ND serial number online in minutes on the Breakthrough Photography website to activate your 25 Year Ironclad Guarantee. Breakthrough Photography stands behind each X4 ND to be free of defects in craftsmanship for 25 years, ensuring your investment is protected. Experience the difference of the 82mm X4 ND Traction Filter, and elevate your photography to new heights.

Featuring high quality AGC glass from Japan, MRC-8 and water and dust repelling nano coating layers, the Breakthrough Photography x2 is the gold standard filter for the discerning professional photographer. Available in either 3-stop or 6-stop, the x2 ND features a weather-sealed traction frame which makes getting filters on-and-off a whole lot easier. In addition to having professional optical performance, x2 features state-of-the-art multi-resistant coating. Four layers of state-of-the-art MRC are applied to each side of the optical disk, resulting in a total of 8 MRC layers. MRC coatings are structurally harder than the glass itself, which increases durability of the optical surfaces by increasing scratch resistance. Incredibly durable. By design. Each X2 ND filter is CNC machined with very narrow tolerances, and manufactured with an incredibly low threshold for defects and a strict quality control process. The result: each and every x2 ND filter is built to last at least 25 years, if not beyond a human lifetime. Less has never been more. The x1 features a 3.5mm ultra-slim double-threaded Traction frame profile to eliminate vignetting on wide-angle full-frame setups. Why 3.5mm? Tests show that the 4mm is the frame width at which point vignetting becomes noticeable on 16mm wide-angle setups on full-frame cameras. But any lower than 3 and lens caps and such don't stay on. At 3.7mm vignetting was entirely eliminated. Double-Threaded & Laser Engraved. x2's 3.5mm frame still accepts all lens caps just fine but also stays below the 3.7mm. Laser engraved lettering in the x2 Traction frame ensure that the lettering won't ever fade or come off even after consistent use. Breakthrough also engraves each and every x2 Traction frame with a unique serial number. When you activate your 25 Year Ironclad Guarantee, Breakthrough associates your x2 serial number to you, so any future discussions on this unique filter are tracked, issues recorded and all that stuff which goes into future product design. Weather-sealed durability. If you want to ensure that your lens maintains out-of-box optical performance for as long as possible, Canon, Nikon and Sony recommend protective filters for the purpose of completing a lens weather-seal. Without a filter, the lens is not dust or water resistant, as Canon states on page 2 of their lens user manuals.

A revolutionary innovation in the world of photography, the 67mm 3-Stop Dark Circular Polarizer Filter from Breakthrough Photography is a unique combination of ND (Neutral Density) and CPL (Circular Polarizer) filters. This high-quality, durable filter is designed to enhance your outdoor photography experience by eliminating the common issue of vignetting at 16mm on a full-frame setup. Known as a 'Dark CPL', this versatile filter merges the features of the X4 ND and X4 CPL into one, effectively reducing the need for stacking multiple filters. The result is an improved image quality with reduced reflections and glare, thanks to its multi-coated coating. The rounded design of the filter allows for more light to pass through, ensuring a brighter image with less loss of detail.This easy-to-use Dark CPL filter is compatible with a wide range of camera and lens systems, including but not limited to Leica, Carl Zeiss lenses, Schneider Xenon, Canon Cinema and L lenses, Nikon, Sony, and Fuji. It's an effective tool for photographers aiming to increase contrast and saturation, while also reducing lens flare and ghosting. Whether you're a professional photographer or a passionate hobbyist, the 67mm 3-Stop Dark Circular Polarizer Filter is a valuable addition to your photography gear, designed to enhance the overall quality of your images.

Find the perfect companion for your photography endeavors in the 82mm X2 Circular Polarizer Filter. Crafted with critically sharp AGC glass from Japan, this filter offers unparalleled color neutrality, making it the top choice for professional photographers seeking the best circular polarizer on the market. The X2 CPL filter, proudly made in the USA by Breakthrough Photography, features an innovative traction frame design. Unlike traditional flat black polarizers with smooth surfaces that are often challenging to rotate, this filter incorporates CNC machined traction directly into the sides of the frame. This unique design allows for easy and secure attachment and removal of the filter, as well as effortless rotation with just one finger - a significant advantage when a lens hood is attached.The state-of-the-art 8-layer multi-resistant coating on this filter effectively eliminates flaring and ghosting, enhancing your image quality. Moreover, the nanotec nano coating layers serve as a protective shield, repelling dust, water, and other elements, making the filter faster and easier to clean. Constructed with environmentally friendly aluminum, the X2 CPL filter is not only incredibly durable but also astonishingly light. Its weather-sealed construction ensures your lens remains protected from the elements, while the double-threaded design allows for easy filter stacking. The X2 CPL filter is fully compatible with all your lens caps, making it a versatile addition to your photography equipment. Experience the difference in image quality with the 82mm X2 Circular Polarizer Filter, designed for the discerning photographer who values high-quality, effective, and professional equipment.

From the innovative minds at Breakthrough Photography comes a revolutionary product, the 72mm 3-Stop Dark Circular Polarizer Filter, ingeniously combining a Neutral Density (ND) filter and a Circular Polarizer (CPL) filter into one. This unique combination, often referred to as a 'Dark CPL', is designed to address the common issue faced by outdoor photographers - vignetting at 16mm on a full-frame setup. The Dark CPL seamlessly integrates the features of the X4 ND and X4 CPL, eliminating the need for stacking filters and thereby reducing the risk of vignetting down to 16mm on a full-frame setup. This makes it an invaluable tool for photographers seeking to capture stunning outdoor images without compromising on image quality.Moreover, the 72mm 3-Stop Dark Circular Polarizer Filter boasts wide compatibility, making it a versatile addition to any photographer's kit. It is compatible with a range of camera and lens systems, including but not limited to Leica, Carl Zeiss lenses, Schneider Xenon, Canon Cinema and L lenses, Nikon, Sony, and Fuji. In essence, the 72mm 3-Stop Dark Circular Polarizer Filter is a game-changer for outdoor photography, offering a practical solution to a common problem while enhancing the overall photographic experience.

Our cutting edge research and alternative manufacturing methods deliver the most color neutral ND filter for the discerning landscape photographer. In the time that it took us to achieve the X4 ND's unparalleled color neutrality we also took our hand at redesigning the filter frame from the ground up. Worlds Sharpest ND Filter. 100% Guaranteed The X4 ND features SCHOTT Superwhite B270 optical glass, which is an ultra clear crown glass. It is produced by melting high purity raw materials and then made using the continuous draw process. The result is excellent transmission in the ultraviolet, visible and infrared spectrums and a high surface quality that accepts our state-of-the-art MRC and nanotec coatings exceptionally well. MRC16 Our state-of-the-art multi-resistant coating (MRC) is an optical coating applied to both surfaces of the glass disk to reduce reflection and to increase surface durability. Our proprietary MRC coating is structurally harder than the glass itself and the reduced reflections improve the efficiency since less light is lost. The reduction of reflections also improves the contrast of the image by elimination of stray light. The real world result? Better contrast and color. Weather-sealed We specifically designed the X4 ND as a workhorse ND filter for field work, built to withstand extreme wind, salt water, dust and other abrasive conditions and elements. Nano Coatings The X4 ND incorporates our state-of-the-art nanotec Nano Coatings Technology, which beads water and other elements rather than absorbing and smearing. 25 Year Support We stand behind each X4 ND filter with our 25 Year Ironclad Guarantee with US-based phone, email and live chat support. How does poor quality MRC affect image quality? Low light transmission and green flaring are common problems with uncoated glass. As MRC coatings are added to each side of the optical disk light transmission steadily increases with flaring steadily decreasing. In our lab tests light transmission apexes at about 16-layers of MRC and slowly decreasing in transmission at 18 and above. 8-layers of MRC are applied evenly to both sides of each optical disk resulting in MRC16. Worlds Most Color Neutral ND Filter. 100% Guaranteed Most of the neutral density filters on the market exhibit a strong blue or magenta cast. The higher the ND factor the more pronounced the color cast. To achieve the most color neutral ND performance we had to develop an alternative manufacturing method to the conventional oven process. Transmission Curve Spectrometers are optical instruments that can detect spectral lines and measure their wavelength or intensity. Spectrometers can also be used to test the efficiency of an optical filter in order to determine whether a filter has properly blocked or transmitted specific wavelengths. A perfectly flat transmission curve would yield a perfectly color neutral result. And while there is no such thing as a...

Our cutting edge research and alternative manufacturing methods deliver the most color neutral ND filter for the discerning landscape photographer. In the time that it took us to achieve the X4 ND's unparalleled color neutrality we also took our hand at redesigning the filter frame from the ground up. Worlds Sharpest ND Filter. 100% Guaranteed The X4 ND features SCHOTT Superwhite B270 optical glass, which is an ultra clear crown glass. It is produced by melting high purity raw materials and then made using the continuous draw process. The result is excellent transmission in the ultraviolet, visible and infrared spectrums and a high surface quality that accepts our state-of-the-art MRC and nanotec coatings exceptionally well. MRC16 Our state-of-the-art multi-resistant coating (MRC) is an optical coating applied to both surfaces of the glass disk to reduce reflection and to increase surface durability. Our proprietary MRC coating is structurally harder than the glass itself and the reduced reflections improve the efficiency since less light is lost. The reduction of reflections also improves the contrast of the image by elimination of stray light. The real world result? Better contrast and color. Weather-sealed We specifically designed the X4 ND as a workhorse ND filter for field work, built to withstand extreme wind, salt water, dust and other abrasive conditions and elements. Nano Coatings The X4 ND incorporates our state-of-the-art nanotec Nano Coatings Technology, which beads water and other elements rather than absorbing and smearing. 25 Year Support We stand behind each X4 ND filter with our 25 Year Ironclad Guarantee with US-based phone, email and live chat support. How does poor quality MRC affect image quality? Low light transmission and green flaring are common problems with uncoated glass. As MRC coatings are added to each side of the optical disk light transmission steadily increases with flaring steadily decreasing. In our lab tests light transmission apexes at about 16-layers of MRC and slowly decreasing in transmission at 18 and above. 8-layers of MRC are applied evenly to both sides of each optical disk resulting in MRC16. Worlds Most Color Neutral ND Filter. 100% Guaranteed Most of the neutral density filters on the market exhibit a strong blue or magenta cast. The higher the ND factor the more pronounced the color cast. To achieve the most color neutral ND performance we had to develop an alternative manufacturing method to the conventional oven process. Transmission Curve Spectrometers are optical instruments that can detect spectral lines and measure their wavelength or intensity. Spectrometers can also be used to test the efficiency of an optical filter in order to determine whether a filter has properly blocked or transmitted specific wavelengths. A perfectly flat transmission curve would yield a perfectly color neutral result. And while there is no such thing as a...