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Graham :: 03.06.2023 15:05:29 lvl. 2 (Lens-Adept) |
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Graham :: 03.06.2023 15:12:12 lvl. 2 (Lens-Adept) |
This is a very curious lens as the one shown is not the standard Ohnar 300mm f5.6 reflex lens - this is the much rarer version which shows a variable aperture. Now, conventional wisdom has it that a mirror lens always has a fixed aperture, so does anyone here know how Ohnar managed to incorporate a variable aperture into this lens?
The lens has a very distinctive appearance and cannot be mistaken for its more conventional sibling. I've been looking for one for a long time with no success but as I have Tamron's SP 350mm, it's not exactly a necessity. But I'm very curious to see just how the variable aperture, if that's what's shown according to the markings on the lens, was achieved.
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