{"product_id":"used-sigma-17-40mm-f1-8-dc-art-for-canon-rf-2","title":"USED Sigma 17-40mm F1.8 DC Art for Canon RF","description":"\u003cp\u003e\u003cstrong\u003eProduct Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWhile offering the convenience of a zoom lens, it achieves a maximum aperture of F1.8 across the entire zoom range. Leveraging its large aperture comparable to a prime lens, it not only allows for expressive shots with significant bokeh but also excels in low-light environments such as dimly lit indoor spaces and night scenes.\u003c\/li\u003e\n\u003cli\u003eThrough an optical design realized with the latest design and processing technologies, including the adoption of high-precision aspherical lenses, superior optical performance is achieved. By focusing particularly on correcting axial chromatic aberration and sagittal coma flare, high resolution is achieved even at F1.8, rendering the delicate textures and details of subjects with precision.\u003c\/li\u003e\n\u003cli\u003eUtilizing cutting-edge simulation technology and Super Multi-Layer Coating, flare and ghosting are significantly suppressed. High resistance to backlight ensures clear and transparent rendering under any lighting conditions.\u003c\/li\u003e\n\u003cli\u003eFeatures an inner zoom mechanism that prevents the overall length from changing during zooming. This makes it easier to maintain balance during shooting and minimizes center-of-gravity shifts when using a gimbal. Furthermore, it boasts excellent dust and moisture resistance, making it suitable for shooting in harsh environments.\u003c\/li\u003e\n\u003cli\u003eDespite being a large-aperture zoom lens, it offers surprising maneuverability. The expressive capabilities unique to F1.8 can be utilized with a compact APS-C system, making it ideal not only for travel and everyday photography but also for video production where mobility is crucial.\u003c\/li\u003e\n\u003cli\u003eIn addition to its dust and moisture resistant structure, the front element of the lens is treated with a water-repellent and anti-smudge coating, allowing for worry-free shooting even in challenging outdoor conditions.\u003c\/li\u003e\n\u003cli\u003eEquipped with AFL buttons that can be assigned to arbitrary functions in two locations. By placing them on the side and top, buttons can be easily operated regardless of whether the camera is held horizontally or vertically.\u003c\/li\u003e\n\u003cli\u003eThe adoption of HLA (High-response Linear Actuator) enables quiet, high-speed, and high-precision autofocus. Smooth and stable autofocus is ideal not only for still photography but also for gimbal shooting and Vlog production with a single operator.\u003c\/li\u003e\n\u003cli\u003eFeatures a design that suppresses focus breathing. By minimizing changes in angle of view due to focusing, natural video shooting with minimal compositional shifts is possible.\u003c\/li\u003e\n\u003cli\u003eEquipped with an aperture ring for intuitive aperture control. During video shooting, turning off the click switch allows for silent and smooth aperture adjustments. It also includes an aperture ring lock switch to prevent accidental aperture changes during shooting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLens Configuration: 11 groups, 17 elements (4 SLD glass elements, 4 aspherical lens elements)\u003c\/li\u003e\n\u003cli\u003eAngle of View: 79.7-39.1°\u003c\/li\u003e\n\u003cli\u003eNumber of Aperture Blades: 11 (rounded aperture)\u003c\/li\u003e\n\u003cli\u003eMinimum Aperture: F16\u003c\/li\u003e\n\u003cli\u003eMinimum Focusing Distance: 28cm\u003c\/li\u003e\n\u003cli\u003eMaximum Magnification Ratio: 1:4.8 (at 40mm focal length)\u003c\/li\u003e\n\u003cli\u003eFilter Size: φ67mm \u0026lt;Includes lens hood and caps\u0026gt;\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAccessories\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLens Hood LH728-02, Front Cap LCF-67 IV, Rear Cap LCR III\u003c\/p\u003e","brand":"CFJ","offers":[{"title":"Default Title","offer_id":54400464945445,"sku":"2441770050969","price":764.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/5816\/3493\/files\/2441770050969-1-1.jpg?v=1794102135","url":"https:\/\/camera-factory-japan.com\/products\/used-sigma-17-40mm-f1-8-dc-art-for-canon-rf-2","provider":"Camera Factory Japan","version":"1.0","type":"link"}