Pixco Lens Adapter Adjustable Aperture Speed Booster with Optical Glass Full Manual Operation Focal Reducer Lens Adapter for Canon EF Lens to Micro M4/3 Panasonic GX9 GF10 Olympus E-M1X Camera

Why need to use speed booster/focal reducer adapter?
It converts fullframe lenses into APS-C lenses. The advantage is to get the fullfame field of view onto the APS-C sensor.

Feature:
Built-In aperture control for adjusting the amount of light let into your camera.
Increase exposure to 1 stop, and you can use faster shutter speed to shoot an image.
Works fine, closely combined with the bayonet smooth, like the original lens.
Full manual operation, manual focus, manual iris adjustment can be achieved with body manual exposure, aperture priority exposure, combined infinite focus.

Specification:
Max. f-stop pass through: 1.4
Optical design (lenses / groups): 4/3
Focal length extension: 0.7x
Image diameter (mm): 28.5
Bayonet front: 135 full frame lens
Bayonet back: Sony NEX / Fuji X / Micro 4/3

Note:
You must set the camera to "Shooting without lens" mode to ON before use.
Avoid direct shooting to light sources, or otherwise blue spot occurs.

Compatible with:
Canon EF lens (Not EF-S lens)
Micro Four Thirds 4/3 Camera
Panasonic LUMIX GX8 G7 GF7 GH4 GM1 GX7 GF6 GH3 G5 GF5 GX1 GF3 G3 GH2 G2 GF2 G1 GF1 G10
Olympus OM-D E-M10 II E-M5 II E-M1 E-M5 E-M10
Pen PEN-F E-PL7 E-PL6 E-P5 E-PL5 E-PM2 E-P3 E-PL3 E-PM1 E-PL2 E-PL1 E-P2 E-P1

Package Include:
1 X speed booster/focal reducer lens adapter
1 X rear cap
1 X body cap