![]() Improved camera-lens communication also increases performance, including instant feedback for enhanced in-lens image stabilization. The larger rear-element design of RF lenses also lends to a comfortable shape and weight balance. The RF mount design supports optical designs that are smaller than possible with the EF mount and often include large-diameter rear-positioned elements that can feature reduced angle of light rays in the image circle periphery.īending light to a lesser degree can lead to improved image quality, including better-corrected aberrations. Keeping the rigidity, durability, strength, and ultra-wide aperture support the large-diameter mount provides while reducing the flange back distance (distance from the back of the lens's mount to the imaging sensor) from 44mm to 20mm. Still, the basics are that the RF lens mount retains the large 54mm inner diameter advantage of the EF mount (for reference, the Nikon Z mount has a similar 55mm diameter, the Nikon F-mount is only 44mm, and the Sony E mount is 46.1mm), The About Canon RF Lenses and the RF Mount page goes into an in-depth discussion. While the lens mount for an interchangeable lens camera may seem a basic necessity, this one is worth mentioning.
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