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Optics Theory - This forum is aimed towards the TECHNICAL side of photographic OPTICS THEORY. There will be some overlap by camera/manufacturer, but this forum is for the heavy duty tech discussions. This is NOT the place to discuss a specific lens or lens line, do that in the appropriate forum. This is the forum to discuss optics or lenses in general, to learn about the tech behind the lenses and images. IF you have a question about a specific lens, post it in the forum about that type of camera, NOT HERE.

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Old 3 Weeks Ago   #1881
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Pentax 135mm f2.5

Bokeh test by Vytas Narusevicius, on Flickr
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Old 3 Weeks Ago   #1882
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by andreas, on Flickr, Canon LTM f1.4/50mm, Sony A7, Bali 2016
my photos on flickr: : https://www.flickr.com/photos/kuuan/collections
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Old 2 Weeks Ago   #1883
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Fuji X-E2s. ernst leitz wetziar summar 5cm F2. Wide open. Adjusted in LR.

Path and Field of Bokeh.

Roger Lund
Canon EOS-M, Fuji X-E2, Helois 44-0 Vintage, Helois 44-4, Canon FD 50mm 1.8, Jupiter 8 50mm F2, Jupiter 3 50mm F1.5, Canon Serenar 50mm 1.9, Canon 50mm 1.8 LTM, Canon Serenar 85mm F2, Leica 50mm f2 summar, E.Ludwig 50mm F2.9, Rekagon will.wetzlar 50mm 2.8,, a.schacht ulm travenar 135mm F3.5, CZJ 29mm 2.8 Hoya 28mm 2.8, CZ Tessar 50mm 2.8, MIR 37mm. 2.8, Porst Color Reflex MC 50mm 1.7, Vivitar 28mm 2.8 mc cf
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