The Contax/Yashica CY Lens to L-Mount CINE Speed Booster ULTRA 0.71x from Metabones uses an advanced five-element in four-groups optical design, incorporating ultra-high index tantalum-based optical glass to achieve optical performance with improved corner sharpness, less distortion, and reduced vignetting. The Speed Booster ULTRA has a magnification of 0.71x and is well corrected for use with virtually all full-frame zoom and prime lenses regardless of exit pupil distance.
Mechanical
Patented positive-lock L lens mount
The tripod foot is detachable and compatible with Arca-Swiss, Markins, and Photo Clam ball heads
Flocking to reduce internal reflection
Satin surface finish
Aluminum alloy and brass construction with chromium plating
Rubber gasket protects the mount connection from dust and moisture
Optical
Increase maximum aperture by 1 stop with a maximum output aperture of f/0.9
Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic
Increase MTF and makes lens 0.71x wider
EAN: 4897050182956