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Fuji GX680 - LF lens adapter question

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pdccamerqs

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HI all,

I have a quick question regarding the Fuji GX680 large format lens adapter. I am attempting to make one of these from a broken 80mm f/5.6 lens assembly. That is I am removing the 80mm lens and Seiko shutter from the assembly and mounting an adapter for a Linhof style board on the front.

My specific question deals with the pin outs on the lens/body contacts on the GX680 lens assembly.

I noticed that the genuine Fuji Fujifilm GX680 LF Lens Board Adapter (seen in pics below) has the standard lens/body contacts and a printed circuit board (red board in photo) on the rear of the pins. I know this is a long shot, but I was wondering if anyone knows what the pinouts on the contacts are for the lens board adapter? I have the contacts and pcb for the 80mm lens assembly.

Thanks in advance for any help!

Paul

Here are some pics (of the genuine adapter from Ebay):

Screenshot 2025-02-13 at 7.47.40 AM.jpg


Screenshot 2025-02-13 at 7.47.23 AM.jpg


Screenshot 2025-02-13 at 7.47.13 AM.jpg
 
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