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300mm sinaron se(rebranded and retested pick of the litter rodenstock apo-sironar-s) test shot. Just incredible. This was taken at f32 with a large amount of shift, so it could have been even sharper than this if I optimized my setup a little more.
I have a 20mm, 40mm and 140mm equivalent for 8x10. I think I'm set for life now.