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04-20-2010, 12:51 PM   #16
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FA43 at F4 is a good answer. My FA77 as well, but I cannot tell you exactly where. But maybe the Vivitar Series 1 105mm macro beats them all. I don't know for sure as I would have to rather obsessively compare.

04-20-2010, 01:13 PM   #17
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sharpest would probably be the Sigma 70.

but some of my lenses are really sharp or sharpest at their respective focal lengths and aperture openings.

DA12-24/4 = sweet spot f5.6 best at 18mm

K28/3.5 = sweet spot f5.6

FA35/2 = sharpest 35 at f2. sweetspot at f4

FA50/1.7 = sharpest 50mm at f1.7

Sigma 70 = sharpest macro at 70mm f2.8. sweetspot f5.6.

FA100 = sharp macro at 100mm. sweetspot f5.6

FA135 = sharpest 135mm. very sharp at f2.8. sweetspot at f4 and f5.6.
04-20-2010, 01:17 PM   #18
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Pentax FA 31mm Limited closely followed by the DA* 55mm F1.4.

- Itai
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04-20-2010, 01:36 PM   #19
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Well, don't really know. The K135/2.5 is "split-hairtops-countingly" sharp at about f/4-8.

Both the K35/3.5 and the K28/3.5 are very sharp for the most part also.

I'm just waiting for someone that owns an A*85 to post... What I have seen from it, very few things come close...

Last edited by Jimfear; 04-20-2010 at 01:37 PM. Reason: spelling...
04-20-2010, 01:50 PM   #20
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QuoteOriginally posted by pcarfan Quote
FA43 at F4
Me too. Next : DA35Ltd (3.5-5.6), DA40 at 2.8, DA*55/1.4 at 2.0....
04-20-2010, 02:04 PM   #21
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You want sharp?

Totally completely sharp... scary sharp, even at 100% image?

You're going to laugh:

I've got a 35mm 2.8 SMC M series lens that is the sharpest thing I've ever, ever used. I was going to sell it after buying a DA 35mm macro, but after some comparisons I found that the old M series lens was overwhelmingly sharp and better looking than the DA at similar stops! I am NOT letting a lens that sharp get away!


04-20-2010, 02:14 PM   #22
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All three about equal:
  • Pentax-FA 77/1.8 Limited
  • Pentax-FA 35/2
  • KMZ Helios 44M 58/2
Not far behind:
  • Sigma 50/2.8 EX DG Macro
  • Pentax-K 55/1.8

04-20-2010, 02:19 PM   #23
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Close call between....

Tamron 90 SP f2.8
Tamron180 SP f2.5 (probably the winner but it's close)
Pentax FA77 Ltd

04-20-2010, 02:30 PM   #24
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D-FA Macro 50/2.8. However, after that, it is a close call between that and the FA 35/2, DA40, DA70 and M 50 1.4 (at F4-8). Actually, almost any of these lenses is so sharp as to be indistinguishable on APS-c in practical use.
04-20-2010, 02:31 PM   #25

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Really, Steve? I love my Heliosen, but I can't imagine ever putting them among the sharpest I own.
04-20-2010, 02:51 PM   #26
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FA43, followed by FA77 and FA31. I'm not really into macro, so I can't compare the FA Ltd against a dedicated macro lens.
04-20-2010, 02:52 PM   #27
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M 50mm 1.7 (but I only own that, the 18-55 kit and a tamron 70-300mm), it will be the DA40 when I actually buy it.
04-20-2010, 02:52 PM   #28
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I'll say:

D FA 100mm macro
FA 35mm 2.0
FA 50mm 1.4
DA 40mm Ltd (I don't have this lens yet it's on its way, but going by test reports)
Image (Cosina) A 28mm 2.8

Bunch of zooms.

Last edited by audiobomber; 04-21-2010 at 05:57 AM.
04-20-2010, 02:55 PM   #29
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Toss up between my FA50 f2.8 Macro, and Sigma 70mm EX DG macro
04-20-2010, 03:03 PM   #30
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Wide open, definitely the Carl Zeiss Jena Flektogon 35mm f2.4.

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