I'm using a new camera that does not have cut corners in the ground glass. I remember reading recently that an alternative way to check for vignetting is to look through the lens. I've tried this several times but no matter how bizarre the movements I put on my 150 schneider I can see the ground glass at full open aperature. This is a cheapo lens (the one that came with the Toyo CF kit) and I can't imagine it has that much image circle.
Am I doing this right? If I can see all four corners of the glass one at a time by twisting my head up and down right and left...have I done my check? Or am I trying to find one spot where I can see all four corners at once?
Thanks,
Mac
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