Viltrox Speed Booster 0.71x AF Canon EF Lens to Sony E Mount Camera EF-E II

0.71x Focal Reducer Booster

With the built-in optical correction group,Focal length of lens is multiplied by 0.71 based on the original, makes the effective focal length smaller and the shooting range wider.

Equivalent focal length = focal length x 0.71 x APS-C conversion factor

Take 50mm lens as an example:

EF-E II: 50mm x 0.71 x 1.5 = 53mm

Ordinary Lens Adapter: 50mm x 1.5 = 75mm

Increases the aperture by 1 stop

EF-E II booster can increase one stop aperture of lens to blur the background and better highlight the theme.

Supports Auto Focus

Built with strengthened copper electronic contacts, EF-E II supports Auto Fcous, Electronic Aperture Control and EXIF Info. Transmitting, giving you fast speed and smooth focusing experience.

Dual Auto Focus Modes - CDAF/PDAF

EF-E II Booster support two focus modes:Contrast Detection Auto Focus and Phase Detection Auto Focus,giving you fast speed and smooth focusing experience.The two focus modes can be switched quickly.

Supports firmware upgrade

Through continuous software updates, VILTROX will help users get better shooting experience, fix product bugs and constantly adapt to the new EF lens, provide more lens and camera combinations.