Pixco Pro Speed Booster Focal Reducer with Optical Glass Adapter

Description

Pixco Pro Focusing Speed Booster Focal Reducer
M42 Mount Lens to Micro Four Thirds M4/3
Used for 2 lighting tests. Works perfect but my project fell through so never used this in production. Essentially brand new item. Includes the front and rear caps and box.
What does it do?
Converts fullframe lenses into APS-C lenses. The advantage is to get the fullfame field of view onto the APS-C sensor.
SPECS:
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
Full manual operation, manual focus, manual iris adjustment can be achieved with body manual exposure, aperture priority exposure, combined infinite focus.
Compatible with: M42 Lens, Micro Four Thirds 4/3 Camera.