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Constant maximum aperture of F1.8
The Sigma 17-40mm F1.8 DC | Art lens is a remarkable tool designed to meet the needs of photographers seeking both versatility and high performance. Its constant F1.8 aperture throughout the zoom range not only ensures consistent light intake but also offers impressive creative capabilities. Ideal for capturing stunning images in dimly lit settings, this lens excels in scenarios like indoor photography, twilight shoots, and cityscapes at night. Additionally, the superior aperture size allows photographers to create strikingly shallow depth-of-field effects, producing smooth, creamy bokeh that elevates the subject from the background with elegance. This combination of utility and artistry makes it a compelling choice for anyone looking to enhance their photographic expression.
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Excellent optical performance
The optical design, realized through the latest advancements in design and processing technologies, ensures unparalleled performance and precision. By incorporating high-precision aspherical lenses, this cutting-edge construction addresses and minimizes key optical challenges, such as axial chromatic aberration and sagittal coma flare. The result is exceptional sharpness and clarity, even when utilizing the wide-open F1.8 aperture. Delicate textures are rendered with remarkable fidelity, and fine details are captured with breathtaking accuracy, showcasing a level of resolution that elevates visual storytelling to new heights.
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Flexible framing made possible
The Sigma 17-40mm F1.8 DC | Art lens provides an exceptional combination of versatility and optical performance, building upon the success of its predecessor. By extending the zoom range, it caters to a broader spectrum of photographic opportunities, from immersive wide-angle shots to intimate portraits that highlight every intricate detail. The remarkable F1.8 aperture throughout the zoom range enables photographers to achieve stunning background separation and exquisite low-light results with ease. Designed for creative flexibility, this lens empowers users to compose their shots effortlessly without the interruption of switching lenses, making it an indispensable tool for enthusiasts and professionals alike.
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Designed to minimize flare and ghosting
This cutting-edge innovation allows photographers to capture the finest details with unparalleled clarity, even in challenging lighting environments. The advanced simulation technology works harmoniously with Sigma’s renowned craftsmanship, delivering images that boast vivid colors, sharp textures, and exceptional depth. Whether shooting in harsh sunlight or subdued indoor settings, this lens elevates the creative possibilities, making every frame a masterpiece.
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Practical and stable inner zoom
Employing an inner zoom mechanism, the overall length of the lens remains constant when the focal length or focus distance changes. This ingenious design ensures unmatched convenience and remarkable stability during use. Whether capturing moments hand-held, setting up intricate shots on a tripod, or seeking the fluidity of a gimbal, the lens performs seamlessly across various scenarios. Additionally, the fixed-length structure provides superior resistance to environmental challenges, offering greater protection against dust and water contamination. This combination of practicality and durability makes it an exceptional choice for photographers and videographers alike.
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Dust- and splash-resistant structure* / water- and oil-repellent coating
The robust design of the lens ensures performance and reliability in challenging conditions. Alongside its dust- and splash-resistant construction, the frontmost surface is treated with a specialized water- and oil-repellent coating. This innovative feature offers enhanced protection against moisture, smudges, and dirt, enabling consistent clarity and functionality even in demanding outdoor scenarios. Whether you’re capturing images in rain, snow, or under dusty skies, this lens stands as a dependable tool for creativity in the elements.
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Equipped with two AFL buttons
The thoughtfully designed button placement enhances the photography experience by offering seamless functionality in multiple shooting orientations. Whether capturing a breathtaking landscape or composing a striking portrait, the ergonomic layout ensures intuitive access to critical controls. By allowing customization options for the AFL buttons on supported camera models, photographers can adapt the lens to suit their unique shooting styles and workflows. The FUJIFILM X Mount version further elevates this adaptability with its dedicated AF function button, delivering precise control over autofocus settings for unparalleled versatility. This combination of innovation and flexibility underscores the commitment to providing tools that inspire creative excellence in every shot.
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HLA-driven high-speed AF
The adoption of HLA (High-response Linear Actuator) revolutionizes autofocus capabilities by delivering remarkable quietness, speed, and precision. This advanced technology ensures a seamless, smooth, and stable autofocus experience, making it not only ideal for capturing still photography but also exceptionally suited for dynamic applications like single-operator shooting with a gimbal or vlogging. Its elevated performance enhances creative possibilities, enabling users to achieve crisp, professional results effortlessly.
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Minimal focus breathing
Focus breathing is effectively suppressed, ensuring minimal changes in the angle of view during focus shifts. This refined performance allows for seamless, natural-looking focus transitions, making it an ideal feature for capturing smooth, professional-quality video footage. Whether tracking a moving subject or adjusting focus for dramatic effect, the result is consistently polished and visually appealing.
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Aperture ring with various functions
Equipped with an aperture ring, this lens provides photographers with intuitive and precise control over aperture settings, allowing for greater creative flexibility. For videographers, the ability to disable the click switch ensures smooth and silent aperture transitions, enhancing the professional quality of video production. Additionally, the aperture ring lock switch offers an extra level of security, preventing accidental adjustments that could disrupt the desired exposure settings during a shoot. *Note: The Canon RF Mount version replaces the aperture ring with a control ring, which does not include a click switch or lock switch. *When the aperture ring lock switch is engaged in position A, the aperture ring remains locked in this position. If engaged in any position other than A, the ring will lock within the range from open to minimum aperture, and it cannot be turned back to position A.
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