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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
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.

Price is $84.00
Price: $83.96