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10-01-2009, 06:45 AM   #1
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Which fast (better than F2) AF lens is sharpest at f1.7.

Lens faster than f2. So, either an f1.4 or f1.7 is sharpest at f1.7, preferably f1.4. Is it the F/FA50mmf1.7 or sigma 50 1.4, or Pentax DA55/1.4 ? or soemthing else. if not for AF the easy answer is the Zeiss ones, but I need AF.

It needs to be sharper than the FA43 at 1.9 or FA77 at f1.8.

Thank you.

(never mind, found a similar thread in the right forum...please delete this)

10-01-2009, 06:58 AM   #2
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FA 31 perhaps? doesnt go to 1.7 tho
10-01-2009, 07:11 AM   #3
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The difference between f1.8 and 1.7 is about...a very, very, very small amount.

Probably the f1.4 50mm, which is pretty damn sharp.
10-01-2009, 07:40 AM   #4
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FA31is not sharper than the FA 77 in the center, wideopen. The FA 50 1.4 is softer than the F/FA 50/1.7 at 1.7. I think Iwill end up with a used F50/1.7 (I love the rendering). I adore the FA 43/1.9, and only need the.........you know what, it just dawned on me....I don't need another lens when I already have the FA43 and the FA77....I think I have snapped out of this LBA....let me take the two I have to the aquarium and see what they can.....whew! I am glad I snapped out of this one...

10-01-2009, 02:35 PM   #5
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QuoteOriginally posted by pcarfan Quote
FA31is not sharper than the FA 77 in the center, wideopen. The FA 50 1.4 is softer than the F/FA 50/1.7 at 1.7. I think Iwill end up with a used F50/1.7 (I love the rendering). I adore the FA 43/1.9, and only need the.........you know what, it just dawned on me....I don't need another lens when I already have the FA43 and the FA77....I think I have snapped out of this LBA....let me take the two I have to the aquarium and see what they can.....whew! I am glad I snapped out of this one...
Get F50/1.7... if it's for good price. It's beautifull lens if you "see" 50mm on APS-C
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