Description
Metabones Canon EF Lens to Canon RF-mount T Speed Booster ULTRA 0.71x is a premium adapter designed to mount Canon EF full-frame lenses on Canon RF-mount cameras while improving the effective field of view and light transmission. It widens the lens by 0.71x, increases maximum aperture by 1 stop, and helps reduce crop factor, vignetting, and distortion for a more full-frame look .
Built with an advanced 5-element/4-group optical design using ultra-high index tantalum-based glass, the Speed Booster ULTRA is engineered for strong corner sharpness and high optical performance. It also supports autofocus, Dual Pixel AF, video AF, image stabilization, EXIF communication, and selectable camera-body lens controls through a built-in multifunction wheel .
The adapter features a durable brass-and-aluminum construction with chromium plating, a detachable tripod foot, and a rubber gasket for dust and moisture protection. It is compatible with select Canon RF cameras, RED KOMODO models, and Canon EF-mount lenses, though EF-S and other APS-C lenses are not supported .
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