I also had the Nikon Nikkor-SW 90mm f4.5 but I preferred this one due the copal 1 shutter, rather than the smaller copal 0 shutter, on the Nikon. Sinaron-W 90mm f4.5 wide angle large format lens. I very, very rarely ran out of coverage and this is a step above the Super Angulon 90mm f5.6 and the F8 of course.
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