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FA 50 1.4 vs DA 50 1.8

Started Mar 31, 2015 | Questions thread
DrewE Senior Member • Posts: 2,053
Re: FA 50 1.4 vs DA 50 1.8
3

I think the DA 50 1.8 has a very similar optical design to the FA 50 1.4 (and lots of other traditional "fast 50" lenses), and likewise similar performance.  The coatings may be slightly better, leading to better flare control on the newer lens, but hardly enough to worry about.  I'm not positive about that, though.

If you want better performance at large apertures, the 55/1.4 lens would be the obvious choice among Pentax's lenses.  If you want noticeably better performance at moderate or small apertures, you'll probably be looking for a pretty long time.

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--DrewE

 DrewE's gear list:DrewE's gear list
Pentax K10D Pentax K-5 Pentax smc DA 18-55mm F3.5-5.6 AL Pentax smc DA 40mm F2.8 Limited Voigtlander 58mm F1.4 Nokton SL II +3 more
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