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The Sigma 24-105mm F4 DG OS HSM Art lens is a premium lens designed for full frame cameras and will also work with APS-C sensors with an effective increase in focal length. The 24-105mm F4 is a highly versatile focal range and staple everyday lens. With the increasing resolution power of new sensors, it is designed to bring out the true potential of evolving camera technology. Sigma's 24-105mm f4 includes proprietary Sigma technology including our Hyper Sonic Motor (HSM) which ensures fast, quiet and accurate autofocusing as well as our Optical Stabilizer (OS) which compensates for camera shake. A 9 blade rounded diaphragm creates beautiful background blur, while FLD and SLD glass elements compensate for various aberrations, distortion and curvature. The use of Thermally Composite Material (TSC) reduces size and weight and as part of the new Global Vision design, it is compatible with the Sigma USB dock for further customization and the new Mount Conversion Service.

Computer experts Orfali and Harkey demystify operating systems, database, data communications and graphical user interface programming to show you how to create working client/server systems, exploit the synergy and avoid the pitfalls inherent in distributed applications. Readers learn how to use the C language to create multitasking applications that communicate with other applications of a Local Area Network; use the full power of the standard Query Language to interface a database; take advantage of the new object-oriented graphic features provided by OS/2 2.1's Workplace Shell and System Object Model; develop code using NetBIOS, LAN Server, Named Pipes and NetWare.

Make every shot a masterpiece with the Sigma 24-105mm f/4.0 DG OS HSM ART Lens for Canon EF. This standard zoom lens, part of Sigma's esteemed Art line, is a testament to precision engineering and optical brilliance, designed specifically for Canon EF-mount cameras. The advanced optical structure of this lens features a series of low dispersion elements and three aspherical elements. These components work together to minimize chromatic and spherical aberrations, delivering impeccable sharpness and clarity across the entire zoom range. Whether capturing the vibrant hues of a sunrise or the soft tones of a sunset, this Sigma lens promises accurate color reproduction and unparalleled clarity, even in challenging lighting conditions.While primarily engineered for full-frame Canon EF-mount cameras, this versatile lens also excels with APS-C models, offering a 38.4-168mm equivalent focal length range. From sweeping landscapes to intimate portraits, this lens provides the flexibility to capture your vision.The Sigma 24-105mm f/4.0 DG OS HSM ART Lens maintains a constant f/4 maximum aperture, ensuring consistent illumination across the zoom range. This feature, coupled with the lens's compact design, equips photographers with the precision and portability they desire.The lens's optical performance is further enhanced by two F Low Dispersion (FLD) elements and two Special Low Dispersion (SLD) elements, which effectively combat chromatic aberrations and color fringing. The Super Multi-Layer Coating ensures contrast-rich, color-neutral imagery, even in backlit conditions.Experience swift, silent, and stable focusing with the integrated HSM (Hyper Sonic Motor). This feature, combined with an internal focusing system and an optimized AF algorithm, ensures smoother, more reliable focusing performance. For those spontaneous moments, the HSM allows for an instantaneous transition to manual focus, simply by turning the focus ring.The Sigma lens also features a nine-blade diaphragm, expertly crafted from robust, fluorine-coated polycarbonate and enhanced with a carbon feather film. This design promises not just durability, but also a finesse that enhances every shot.Built to withstand varying conditions, the Sigma lens is crafted using Thermally Stable Composite (TSC), ensuring precision even in fluctuating temperatures. The robust brass bayonet ensures accurate mounting and unmatched rigidity, making it a reliable companion for any photo expedition.Stay updated with Sigma USB Dock compatibility. This lens seamlessly integrates with the optional Sigma USB Dock, enabling photographers to fine-tune lens characteristics and ensure they're always equipped with the latest firmware. Embark on a journey of artistic discovery with the Sigma 24-105mm f/4.0 DG OS HSM ART Lens for Canon EF, and redefine your photographic boundaries.

Find the perfect balance of versatility and quality with the Sigma 24-105mm F4 DG OS HSM Art lens, expertly designed for both full frame and APS-C sensor cameras. This lens offers an effective increase in focal length, making it an essential everyday lens for photographers of all levels. With the rise of high-resolution sensors, this lens is crafted to unlock the full potential of your evolving camera technology.The Sigma 24-105mm f4 lens is not just about range; it's about performance too. It incorporates Sigma's proprietary Hyper Sonic Motor (HSM) technology, ensuring fast, quiet, and precise autofocusing. This is complemented by our Optical Stabilizer (OS), which effectively compensates for camera shake, ensuring your shots are always crystal clear.Aesthetics are not compromised either. The lens features a 9 blade rounded diaphragm, creating a beautiful background blur or 'bokeh' effect. The lens also includes FLD and SLD glass elements, which work together to compensate for various aberrations, distortion, and curvature, ensuring your images are always sharp and true to life.Constructed with Thermally Composite Material (TSC), the Sigma 24-105mm F4 DG OS HSM Art lens is both lightweight and durable. As part of Sigma's innovative Global Vision design, it is compatible with the Sigma USB dock for further customization. Plus, it's eligible for the new Mount Conversion Service, offering you flexibility and longevity with your lens. Whether you're shooting with a Nikon D780 or a D7200, this lens is designed to deliver superior performance and outstanding image quality.

Find the perfect balance of versatility and quality with the Sigma 24-105mm F4 DG OS HSM Art lens, expertly designed for both full frame and APS-C sensor cameras. This lens offers an effective increase in focal length, making it an essential everyday lens for photographers of all levels. With the rise of high-resolution sensors, this lens is crafted to unlock the full potential of your evolving camera technology.The Sigma 24-105mm f4 lens is not just about range; it's about performance too. It incorporates Sigma's proprietary Hyper Sonic Motor (HSM) technology, ensuring fast, quiet, and precise autofocusing. This is complemented by our Optical Stabilizer (OS), which effectively compensates for camera shake, ensuring your shots are always crystal clear.Aesthetics are not compromised either. The lens features a 9 blade rounded diaphragm, creating a beautiful background blur or 'bokeh' effect. The lens also includes FLD and SLD glass elements, which work together to compensate for various aberrations, distortion, and curvature, ensuring your images are always sharp and true to life.Constructed with Thermally Composite Material (TSC), the Sigma 24-105mm F4 DG OS HSM Art lens is both lightweight and durable. As part of Sigma's innovative Global Vision design, it is compatible with the Sigma USB dock for further customization. Plus, it's eligible for the new Mount Conversion Service, offering you flexibility and longevity with your lens. Whether you're shooting with a Nikon D780 or a D7200, this lens is designed to deliver superior performance and outstanding image quality.

Explore the pinnacle of lens protection and performance enhancement with the Sigma Lens Hood, meticulously crafted for the 500mm F4.0 Sports DG OS HSM Lens. This durable lens hood is an essential accessory for photographers who demand the utmost in image quality and lens care.Crafted from high-quality materials, this lens hood boasts a robust construction that is built to withstand the rigors of professional use. Whether you're capturing the action on the sports field or tracking wildlife in their natural habitat, this lens hood is designed to provide functional, long-lasting protection for your valuable lens.The sleek and stylish design of the Sigma Lens Hood not only complements the aesthetics of your lens but also serves a critical purpose. By effectively shielding the lens from stray light, it minimizes lens flare and ghosting, ensuring that your images remain clear and contrasty even in challenging lighting conditions.As a genuine Sigma accessory, this lens hood offers a seamless fit for the 500mm F4.0 Sports DG OS HSM Lens. The precision-engineered interface ensures that the hood attaches smoothly and securely, maintaining the lens's optical performance and providing peace of mind that your lens is safeguarded against bumps and environmental elements.Choose the Sigma Lens Hood for the 500mm F4.0 Sports DG OS HSM Lens for its professional-grade durability, high-quality construction, and functional design. It's the perfect complement to your Sigma lens, ensuring that every shot you take is captured with the clarity and brilliance that your photography deserves.

For professional photographers and enthusiasts alike, the Sigma 24-105mm F4 DG OS HSM Art lens is a high-quality, versatile choice that's designed to maximize the potential of full-frame cameras, while also being compatible with APS-C sensors. This lens offers an effective increase in focal length, making it an everyday essential for capturing a wide range of subjects and scenes.Engineered with the increasing resolution power of new sensors in mind, this lens is designed to bring out the true potential of evolving camera technology. It incorporates Sigma's proprietary technology, including the Hyper Sonic Motor (HSM) for fast, quiet, and accurate autofocusing, and the Optical Stabilizer (OS) to compensate for camera shake, ensuring sharp, blur-free images even in challenging light conditions.The Sigma 24-105mm f4 lens features a 9-blade rounded diaphragm that creates a beautiful background blur, perfect for portrait photography and capturing stunning bokeh effects. It also includes FLD and SLD glass elements to compensate for various aberrations, distortion, and curvature, ensuring high-quality images with exceptional clarity and detail.Constructed with Thermally Composite Material (TSC), this lens is not only durable but also lightweight, making it an ideal companion for on-the-go photography. As part of Sigma's innovative Global Vision design, it is compatible with the Sigma USB dock for further customization, and the new Mount Conversion Service.This lens bundle also includes a Hoya 82mm UV+CPL filter kit, which enhances image quality by reducing glare and reflections, and protects the lens from potential damage. A cleaning kit and cloth are also provided, ensuring your lens remains in top condition for optimal performance.

Find unparalleled clarity and versatility with the Sigma 24-105mm f/4.0 DG OS HSM ART Lens for Nikon F, a quintessential tool for both professional and enthusiast photographers. Engineered for full-frame Nikon F mount cameras, this lens also offers seamless compatibility with APS-C sensors, providing an extended reach in focal length. The 24-105mm range is exceptionally versatile, ideal for a wide array of photographic scenarios - from landscapes to portraits, making it an indispensable everyday lens.Crafted to meet the demands of modern high-resolution sensors, the Sigma 24-105mm f/4.0 lens is designed to maximize the performance of your camera, ensuring that every shot captures the full detail and nuance your equipment can deliver. The lens features advanced Sigma technologies, including the Hyper Sonic Motor (HSM), which delivers fast, quiet, and precise autofocusing, essential for capturing fleeting moments with ease and discretion.Moreover, the built-in Optical Stabilizer (OS) technology is a game-changer for handheld shooting, effectively reducing the effects of camera shake to produce sharper images even in challenging lighting conditions. This makes the lens particularly beneficial for photographers who prefer the freedom of shooting without a tripod.The optical construction of this lens is nothing short of innovative, incorporating FLD and SLD glass elements to correct various aberrations, distortion, and curvature, ensuring high-resolution, edge-to-edge sharpness, and color accuracy. The 9-blade rounded diaphragm contributes to a pleasing bokeh effect, rendering out-of-focus areas with a smooth, aesthetically pleasing quality that enhances the overall composition.Constructed with Thermally Composite Material (TSC), the lens is both lightweight and durable, designed to withstand the rigors of daily use while minimizing the strain of carrying heavy equipment. As part of Sigma's esteemed Art line, this lens adheres to the highest standards of optical excellence and is compatible with the Sigma USB dock for firmware updates and focus adjustments, as well as Sigma's Mount Conversion Service, ensuring its longevity and adaptability in the ever-evolving landscape of camera technology.This exclusive bundle enhances your photographic experience with the inclusion of the Vanguard ALTA PRO 264AT Aluminum Tripod Kit, providing a stable and versatile platform for any shooting scenario. The bundle also comes with a comprehensive cleaning kit and a microfiber cleaning cloth, ensuring that your lens remains in pristine condition for consistently outstanding image quality. Elevate your photography with this advanced, high-quality Sigma lens and accessory bundle, tailored to deliver professional results in every shot.

From capturing breathtaking landscapes to intimate portraits, the Sigma 24-105mm F4 DG OS HSM Art lens is a versatile tool for photographers seeking superior image quality. Designed for full-frame cameras, this lens is also compatible with APS-C sensors, effectively increasing the focal length for a wider range of photographic possibilities. The 24-105mm F4 focal range is a staple in everyday photography, offering flexibility for both wide-angle and telephoto shots. With the rise of high-resolution sensors, this lens is engineered to unlock the full potential of your camera's evolving technology.Incorporating Sigma's proprietary technologies, this lens features a Hyper Sonic Motor (HSM) for fast, quiet, and accurate autofocusing, ensuring you never miss a moment. The Optical Stabilizer (OS) compensates for camera shake, delivering sharp, blur-free images even in challenging lighting conditions.The lens's 9-blade rounded diaphragm creates a beautiful background blur, perfect for highlighting your subject. FLD and SLD glass elements correct various aberrations, distortion, and curvature, resulting in crisp, clear images with minimal distortion.Constructed with Thermally Composite Material (TSC), the Sigma 24-105mm F4 lens is lightweight and compact, making it an ideal companion for on-the-go photography. As part of Sigma's Global Vision design, it's compatible with the Sigma USB dock for further customization and the new Mount Conversion Service.This bundle also includes a ProOptic 82mm Filter Kit to protect your lens and enhance image quality, a Lens Wrap for secure storage, a Flex Lens Shade to prevent unwanted glare, a Cap Tether to prevent loss of lens cap, a Cleaning Kit to keep your lens in top condition, and a PC Software Kit for post-processing needs. Elevate your photography experience with the Sigma 24-105mm F4 DG OS HSM Art lens bundle.

Discover the power and reliability of the HP Fortis 11 G10 Chromebook, a ruggedly designed 11.6" HD laptop that's engineered for durability and performance. This Chromebook is powered by an Intel Celeron N100 0.8GHz quad-core processor and 4GB LPDDR5 RAM, ensuring smooth multitasking and efficient performance for your everyday tasks. The Fortis 11 G10 Chromebook is equipped with a 32GB eMMC storage, providing ample space for your files and applications. It runs on the user-friendly and secure Chrome OS, which offers automatic software updates through June 2031 and built-in anti-virus protection to keep your device safe and up-to-date.Experience immersive interaction with its 180-degree lay-flat hinge, allowing for focused engagement with your tasks. The device also features an HP Privacy Camera, giving you peace of mind against malicious surveillance. This durable Chromebook is designed to resist daily wear and tear, with components that undergo rigorous MIL-STD 810 and drop testing. Its full-skirted anchored keyboard is resistant to picking, spills, and dust, further enhancing its durability.Stay connected with advanced wireless connectivity options, including Wi-Fi 6E wireless LAN that supports Bluetooth, MUMIMO, and HP Extended Range Wireless LAN. The device also features reinforced ports for added durability, including two USB-C ports, two USB-A ports, and an HDMI port for versatile connectivity.The HP Fortis 11 G10 Chromebook is not just about performance and durability, it's also about sustainability. It's EPEAT 2019 Gold certified in all countries where HP registers the product, meeting strict environmental criteria.Experience fast performance, seamless connectivity, and the confidence of a rugged design with the HP Fortis 11 G10 Chromebook. Whether you're working, studying, or simply browsing, this Chromebook is built to withstand the challenges of daily use.

About the brand: Exceptional detail. Trendy to timeless styles. 18-karat gold over .925 sterling silver Faceted Round-cut Prong-set Diamond = approximately 0.06 ct. tw.; color = SI1-2; clarity = G-H Ring can be re-sized by any professional jeweler; however, if re-sized, it will not be accepted for return It is customary to treat most gemstones to achieve enhanced color and durability. Some of these treatments may not be permanent, and may require special care. Please note: In product titles ct. tw. refers to the total carat weight of all diamonds and/or gemstones combined. Made in Italy

Heritage Audio OST-4 V2.0 500 Series Rack with OS TechThe Heritage Audio OST-4 V2.0 500 series enclosure is designed for racking any and all 500-se...

Discover the pinnacle of audio module housing with the Heritage Audio OST-10 v2.0 500 Series 10-Slot Rack, a robust and stylish solution designed to accommodate a diverse range of 500-series modules. This high-quality enclosure is engineered to support even the most power-intensive 'double wide' modules, class-A units, and vacuum tube designs, ensuring that your audio equipment is not only securely racked but also operating at its optimal performance level.Crafted with Heritage Audio's innovative On Slot Technology (OS Tech), the OST-10 v2.0 Rack offers unparalleled protection, filtering, and isolation for each individual channel. Unlike standard 500-series enclosures that typically share a common power supply, the OST-10 v2.0 features a unique power architecture. Each slot is equipped with its own individually regulated and isolated power supply, which guarantees that every module functions independently and without interference from its neighbors. This meticulous design detail ensures that even if one module is 'power hungry' or encounters a fault, the performance of other modules remains pristine and unaffected.The advanced design of the OST-10 v2.0 Rack not only reduces electrical interference but also enhances the overall audio quality. Many 500-series devices, particularly microphone preamps, exhibit lower self-noise and improved performance when housed within this enclosure. The v2.0 model introduces an exciting Link feature, allowing seamless channel linking at the push of a button via the back panel, eliminating the need for external patch cables and streamlining your signal routing process.Heritage Audio's commitment to excellence is evident in the construction of the OST-10 v2.0 Rack. Utilizing state-of-the-art manufacturing techniques at their headquarters in Spain, Heritage Audio ensures that no corners are cut, resulting in an enclosure that not only looks stylish but also delivers the highest fidelity audio reproduction.The 500 Series format continues to thrive, and with the OST-10 v2.0 Rack, you are perfectly equipped to accommodate both your current collection and future expansions. This durable and reliable enclosure is compatible with any 500 Series module, making it an essential component for both professional and home studios. It's not just about housing your modules - it's about unlocking their full sonic potential.In a market where power compatibility issues can plague audio engineers, the OST-10 v2.0 stands out with its broad compatibility range. It ensures that even the most demanding modules receive the power they require, while adjacent modules operate flawlessly. With the Heritage Audio OST-10 v2.0 500 Series 10-Slot Rack, your 500 Series modules will experience a level of performance and reliability that is simply unmatched.

Discover the superior functionality and design of the OST-4 V2.0 500 Series 4-Slot Rack with OS Technology. This advanced enclosure is meticulously engineered to accommodate any 500-series modules and devices, including 'double wide' modules and the most power-intensive class-A and vacuum tube designs. The OST-4 V2.0 500 Series Rack is equipped with Heritage Audio's innovative On Slot Technology, offering unparalleled protection, filtering, and isolation for each individual channel. Unlike many 500-series enclosures available, which utilize a basic power supply design feeding every channel in parallel, the OST-4 V2.0 Rack ensures each channel has its own isolated and regulated power supply. This unique feature guarantees optimal performance of every 500-series module installed, without the risk of a 'power hungry' or faulty module compromising the performance of others.Experience enhanced audio quality with the OST-4 V2.0 Rack, as many 500-series devices, particularly mic preamps, exhibit lower self-noise and improved performance when housed in this enclosure. The V2.0 model introduces the innovative Link feature, which allows for seamless linking of each channel to the next at the push of a button, eliminating the need for patch cables.Crafted at the Heritage Audio headquarters in Spain, the OST-4 V2.0 500 Series Rack embodies the brand's commitment to cutting-edge manufacturing and design techniques without compromising on audio quality. This durable, portable enclosure is an ideal solution for both professional and home studios looking to expand their collection of 500 Series modules.The OST-4 V2.0 Rack not only provides a safe and compatible housing for your 500 Series modules but also enhances their sonic potential. It offers the broadest range of compatibility, ensuring that even the most 'demanding' modules receive the power they need while keeping adjacent modules unaffected. Elevate your audio experience with the OST-4 V2.0 500 Series 4-Slot Rack with OS Technology.

This EPROM is programmed with the Sequential Circuits Drumtraks 0.5 firmware. It was the last update to this classic drum machine. Simply replace ...

How about a laptop that combines power, productivity, and entertainment in one sleek package? The Chromebook x360 14" HD 2-In-1 Touchscreen Laptop, powered by an Intel N100 0.8GHz processor and equipped with 4GB RAM and 64GB eMMC, is the perfect tool for your digital needs. Running on Chrome OS, this Glacier Silver laptop offers a seamless user experience with built-in virus protection, quick boot-up times, and automatic updates.The HP Chromebook x360 is designed for effortless productivity, whether you're at home, in the office, or on the go. Its wireless connectivity and ample memory make multitasking a breeze, allowing you to switch between work tasks, personal projects, and entertainment with ease. Your favorite Google applications are just a click away, making it easier than ever to stay organized and efficient.Entertainment is a key feature of this laptop, with its 14-inch diagonal display and dual stereo speakers providing clear, immersive audio-visual experiences. The high-quality camera, equipped with temporal noise reduction and integrated dual array digital microphones, ensures crystal-clear video calls. A camera privacy shutter allows you to control when you're seen, ensuring your privacy is always respected.The Chromebook x360's design is as flexible as it is stylish. Its x360 design and large screen-to-body ratio make it a pleasure to use, while built-in security features offer peace of mind. The laptop is also environmentally friendly, made from ocean-bound plastic, post-consumer recycled plastics, and recycled aluminum. Its EPEAT Gold with Climate+ and ENERGY STAR certified design means it's as good for the planet as it is for you.The laptop's enhanced keyboard features mic mute, screenshot, and pause play keys for added convenience. The Google Everything Button offers quick access to files, apps, and online answers, while the upfiring speakers deliver superior sound quality. The HP Imagepad with multi-touch gesture support allows for easy navigation, making the Chromebook x360 14" HD 2-In-1 Touchscreen Laptop an excellent choice for those seeking a powerful, versatile, and eco-friendly laptop.