I need one that will not vignette down to 47mm on 4x5 as I shoot in extreme lighting conditions. Strong side light late afternoon and directly into it from sunset to late afternoon or early morning just after sunrise.
I was considering getting a 5x5 in bellows and making a frame to hold it using a geared rail to adjust and either attaching to lens or an arca rail that the camera is mounted to. A third option, but not desirable is to attach to front standard.
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