The Canon EF Lens to Sony NEX Metabones Speed Booster is an electronic adapter that allows you to pair Canon EF mount lenses with crop frame sensor Sony E mount cameras. It increases the effective field of view and the maximum aperture of the lens you're using. This combats the crop factor of your APS-C camera while allowing you to use your favorite Canon EF mount lenses.

This Speed Booster works by shrinking the image circle of your Canon EF lens down to better fit APS-C 1.5x crop sensors. This has the effect of making the field of view of the lens wider or, in other terms, reducing the crop factor of the camera from 1.5x to 1.07x – nearly full frame. For example, a 40mm lens becomes an effective 42.8mm with this Speed Booster on an APS-C sensor instead of the 60mm effective view you'd have with a straight adapter. Additionally, by concentrating the image circle from a lens, this Speed Booster also "brightens" the image – maximum lens apertures are increased by approximately 1 stop down to the sub-f/1.0 range. This adapter is ideal for those who want to use their full frame Canon lens collection on Sony E mount cameras that have either APS-C sensors, Super 35 sensors, or ASP-C/Super 35 modes without sacrificing angle of view.

Please see the "Notes" section for important information about autofocus and lens compatibility.

• Front Cap

• Rear Cap

• Detachable Tripod Foot

• Allen Wrench

• Carrying Case

• Increases Maximum Aperture by 1 Stop and Increases Angle of View By 0.71x

• Retains Electronic Communication Between Lens and Camera

• Powered by Camera Body

• Partially Retains Autofocus (See Notes for More)

• Allows Aperture Control with Your Camera

• Supports Image Stabilization of Lenses

There is no manual for this product.