K&F Concept FD-GFX IV – Canon FD Lens to Fujifilm GFX Mount Adapter

The K&F Concept FD-GFX IV adapter mounts lenses with the Canon FD / FL mount on cameras with the Fujifilm G mount. It is purely mechanical, with no electronic contacts: focusing is done by hand on the lens and the aperture is set with the lens aperture ring. The all-metal adapter is precisely machined.

Canon FD lenses on Fujifilm GFX bodies

With the FD-GFX IV adapter, Canon FD lenses can be used on a modern Fujifilm GFX body with everything it offers – a viewfinder with magnification for precise manual focusing, sensor stabilisation if the body has it, and current recording formats.

Solid metal construction

The adapter is all-metal, made of an aluminium and copper alloy. Precise machining ensures a firm connection without play. A red dot shows how to align the adapter with the mount, making mounting and removal quick and accurate.

Manual focus and aperture

The adapter has no electronic contacts and the camera does not recognise the lens – autofocus, aperture control from the body and lens data in EXIF do not work. Focus with the ring on the lens; magnification or focus peaking in the viewfinder makes precise focusing easier. The aperture is set with the aperture ring on the lens; lenses without an aperture ring cannot be stopped down with this adapter.

First use

Before the first shot, enable shutter release without a lens in the camera menu (on Sony “Release w/o Lens”, a similar option on other brands). Otherwise the body will not treat the adapter without contacts as an attached lens and will not release the shutter.

Mounting FD lenses

The lens is inserted into the FD mount and locked with the rotating ring marked LOCK and OPEN, just as on the original Canon cameras.

Small-format lenses on GFX

Small-format film lenses are designed for a 36 × 24 mm frame and do not cover the whole GFX sensor (44 × 33 mm); to avoid vignetting, shoot with them in the 35mm crop mode.

Compatible cameras

Fujifilm cameras with the G mount (GFX series).