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SunnyG. SunnyG. is offline

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  1. kernos
    07-20-18
    kernos
    Ok one last link. This is a (highly subjective) bokeh comparison of the lenses we've been discussing.
  2. kernos
    07-20-18
    kernos
    I just spent a little time wandering through lens formula schematics. Interestingly, the Canon FL 55mm 1.2 and the Topcon (pre Cosina) 58mm 1.4 have the same 7 element 5 group scheme with very similar element construction. The Voigtlander remake is very close but is a 7 element six group design. This would explain, perhaps, why people were getting different results from the Topcon vs. the VL. Between the FL and the Topcon then it comes down to small details like construction, glass formula and coatings. If you're interested this is a pretty good background on lens formulae for normal lenses.

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SunnyG. has received a total of 33 Likes | View All of SunnyG.'s Liked Posts | View Posts SunnyG. Likes

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Need help urgently! Vivitar 24mm f2! Pentax SLR Lens Discussion SunnyG. 17 1007 03-09-19 07:27 AM
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Disassembling Takumar 24mm f3.5. Pentax SLR Lens Discussion Wild Mark 11 700 12-20-18 01:17 PM
my new SMC Takumar 135mm f2.5 Pentax SLR Lens Discussion hjoseph7 2 542 12-17-18 06:21 PM
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Reason for Takumar vs K 135mm F2.5 price difference? Pentax SLR Lens Discussion SunnyG. 23 1589 11-29-18 06:26 PM
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