KIPON Baveyes Mamiya 645-Sony E 0.7x Focal Reducer

Medium-format Mamiya 645 lenses on Sony E-mount cameras

The KIPON BAVEYES M645-S/E 0.7x is an optical focal reducer designed to mount Mamiya 645 lenses on Sony E-mount camera bodies. Instead of acting as a simple mechanical adapter, it uses internal optics to reduce the effective focal length by a factor of 0.7x. This helps recover a wider field of view from medium-format lenses when they are used on a full-frame Sony E camera, making classic M645 glass more practical for filmmaking and photography.

0.7x wider field of view and one-stop gain

The focal reducer shortens the effective focal length by 0.7x. For example, an 80 mm Mamiya 645 lens behaves optically like approximately a 56 mm lens after the reduction. KIPON also specifies an increase in light transmission of around one stop, so an f/2.8 lens provides brightness comparable to approximately f/2.0. This combination gives medium-format lenses a wider, faster character on Sony E-mount bodies and can be especially useful for portraits, commercials, music videos and other productions that benefit from shallow depth of field and distinctive vintage rendering.

Manual operation and precise optical construction

This version of the adapter is fully manual. KIPON states that autofocus, automatic diaphragm control and other electronic functions are not available, so focus and aperture must be controlled directly on the lens. Infinity focus is supported with compatible lenses. The manufacturer also notes that the optical system was designed by IBE Optics in Germany, while the adapter itself combines metal construction with glass elements.

A practical choice for controlled cinema setups

Because there are several electronic and non-electronic versions of KIPON Mamiya 645 focal reducers, it is important to treat this specific M645-S/E 0.7x model as a manual adapter. This makes it particularly well suited to controlled cinema setups where manual focus and aperture operation are already part of the workflow.

Complete rental set

Our rental package includes the KIPON Baveyes Mamiya 645-Sony E 0.7x Focal Reducer, front and rear caps and a carrying case. The protective accessories make it easy to transport the adapter safely together with a Mamiya 645 lens set and Sony E-mount camera package.

Rent KIPON BAVEYES M645-S/E 0.7x at CamCam Rental

At CamCam you can check current availability online and reserve the focal reducer together with Sony E-mount cameras, Mamiya 645 lenses and other production accessories. If you are unsure which lens will give you the field of view or image character you need, our team can help you choose a suitable setup based on practical on-set experience. We also offer delivery and collection, optional on-set assistant support, after-hours returns, free parking and free equipment tests by arrangement. CamCam is open seven days a week, including weekends.