New optical design: advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.
The Speed Booster ULTRA has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors and Super35 camcoder, such as Sony E-mount, Fuji X-mount cameras Sony FS7 MARKII, from 1.5x to 1.07x.
Full-Frame PL Lens to APS-C E-Mount Body
0.71x Focal-Length Multiplier
Increases Maximum Aperture by 1 Stop
Removable Support Foot
Standard Manufacturer's Warranty