Forum: Pentax SLR Lens Discussion
10-08-2016, 12:42 AM
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The Sigma 30mm is a very good lens. I have no issue, AF is accurate, not slow without hesitation, but I only use central spot AF. Also at f1.4 you must do with purple fringing.
The 20-40mm is a superb zoom, without purple fringing, flare, or AC. Sharp with an excellent rendering.
Apparently they are samples variations with these lenses, you must buy in a place you can easy change them...
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