![\"Staircase](\"http:\/\/www.biasedlogic.com\/wp-content\/uploads\/2006\/02\/2006-02-19%2023-50-38%208028.jpg\")
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Flektogon 20mm f:4. My new old lens… \ud83d\ude42
\nThis is the predecessor of 2.8\/20, lens optimized for aperture at the cost of distortion. The original 20\/4 has almost perfect edge-to-edge rectilinear correction. The above frame was not altered geometrically in any way (well, except for plain rotation & border crop after scanning). The lowest stair steps are unsharp – they are out of DOF, the glass is sharp to the edge (of course, sharpness is better mid-field, but corner softness is not that much).
\nJust don’t put it on dSLR…<\/p>\n
BTW: There’s a lot of heat as whether 2.8 or 4 is better, don’t shoot at me: I don’t care. If this lens fails me, I’ll ditch it and try something else, I won’t change a tool that works for me.<\/p>\n","protected":false},"excerpt":{"rendered":"
Flektogon 20mm f:4. My new old lens… \ud83d\ude42 This is the predecessor of 2.8\/20, lens optimized for aperture at the cost of distortion. The original 20\/4 has almost perfect edge-to-edge rectilinear correction. The above frame was not altered geometrically in … Continue reading