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Forum: Winners' Showcase
07-02-2020, 03:37 PM
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The arch at Panther Beach, Santa Cruz, Ca.
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Forum: Pentax SLR Lens Discussion
04-18-2020, 02:19 PM
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Trevor, I don't think your plan is going to work. The image circle on an SMC Pentax-A 645 35mm f/3.5 lens is nominally 72mm (assuming 58mm x 43mm of film area on the negative). It's actually around 75mm, but the "extra" image circle is poor quality and was never designed to make good images. I know this empirically from shifting the lens on my GFX 50R sensor. I can shift 12mm in portrait orientation (which requires a 75mm image circle), but the far-shifted side of the image is dodgy.
Rob
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