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02-22-2012, 08:46 PM   #16
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Not a fair comparison--but if it helps I find the 28mm f3.5 (takumar) has much higher resolution and much less comma, than my 35mm f2 (K). My Tak is not smc but otherwise it is same as smc Tak (as regards lens desc./number elements/etc.).

But as regards flare I have no way of knowing w/o smc (the smc 35mm is really excellent in this area).

02-22-2012, 11:19 PM   #17
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I have shot with the Super-Tak 28/3.5 and it a wonderful lens...not the fastest aperture in the bag, but great none-the-less.

As for use reversed...I have done some macro work with a reversed 28mm, but gave up due to inadequate working distance. 1:1 is easy to attain, but you are literally millimeters from the subject!


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02-23-2012, 12:13 AM   #18
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So nobody actually tested them side by side?
The use of the chosen will be for macro reverced but also normally attached for landscapes and I need resolution there on digital. So the lens must be sharp with closed down aperture for about F8, F11, F16... from the test of the japanese guy I see thet the M 28 2.8 beats the 28 3.5 rivals or maybe there are mistakes in the site?

And everybody says thet the colors of the 3.5 versions are much better?
02-23-2012, 09:47 AM   #19
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I have the K 28/3.5 and it's my sharpest lens between f5.6 and f8. Even the FA 31 Ltd can't match it in that range. Colors are Pentax excellent.

02-23-2012, 11:45 AM   #20
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I have the A 28/2.8 and it is never used (is it optically the same as the M 28/2.8 ?). I have a Zeiss 28/2.8 which is on a different planet completely to the M28. Absolutely zero comparison in sharpness or rendering.
02-23-2012, 12:03 PM   #21
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So I took a M 28mm 2.8 II for a few days to test, will post resolution test here . Somebody else? I need photos, crops ...


Well... this means that in terms of pure resolution(without mentioning the CAs) the A28 2.8(this M 28 2.8 which I have testes is version 2) is outperformed!

PS Anybody with tested the M 28 3.5?

Last edited by simbon4o; 02-23-2012 at 01:53 PM. Reason: update
02-23-2012, 04:47 PM   #22
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QuoteOriginally posted by Frogfish Quote
I have the A 28/2.8 and it is never used (is it optically the same as the M 28/2.8 ?
Depends on which M 28/2.8; there are actually two versions. The second version is "optically the same" as the A (and F) versions. Most M 28/2.8s are the first version of the lens, as it is far more common.

Also the K 28/3.5 is not the "optically the same" as either the Takumar or the M 28/3.5. The K 28/3.5 is an eight element lens which appears to have been specifically designed to improve border to border sharpness.

QuoteOriginally posted by simbon4o Quote
I see thet the M 28 2.8 beats the 28 3.5 rivals or maybe there are mistakes in the site
If that refers to Yoshihiko Takinami's tests, those are a bit controversial, as he reached some counter-intuitive results (is the K 135/2.5 really sharper than the FA 77?). If it is merely an issue of resolution, I don't think there's a huge difference between the various 28s. But the K 28/3.5 and the M 28/3.5 produce images that look sharper than the M 28/2.8 because those f3.5 lenses are a lot more contrasty than the first version of the M 28/2.8.
02-23-2012, 05:40 PM   #23
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The SMC Takumar 28/3.5 didn't fare too well in this comparison. I haven't done any rigorous testing on my own copy, but so far it hasn't impressed me either.


Last edited by Ikarus; 02-23-2012 at 06:14 PM.
02-23-2012, 11:45 PM   #24
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Well this test was unfindable thanks for showing it! It answers to my question about which one to chose M or K 28 3.5, now I'm only trying to chose between A28 2.8 and M28 3.5 . I have found one A28 2.8 for about 70$ and probably will go for it because of the price, the M 28 3.5 is for 53$... difficult choice but will be made soon .
02-24-2012, 08:31 AM   #25
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QuoteOriginally posted by simbon4o Quote
Well this test was unfindable thanks for showing it! It answers to my question about which one to chose M or K 28 3.5, now I'm only trying to chose between A28 2.8 and M28 3.5 . I have found one A28 2.8 for about 70$ and probably will go for it because of the price, the M 28 3.5 is for 53$... difficult choice but will be made soon .
As I mentioned above I was really unimpressed with the A 28/2.8 and after a few uses it now resides in the spare room.
02-24-2012, 09:10 AM   #26
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QuoteOriginally posted by RioRico Quote
That means no Canon FDs
Canon FD stuff can be used with a simple modification. Take a spare rear lens cap and cut out the center of it. The modified lens cap will engage the aperture mechanism to allow the iris to be closed down to the desired aperture. Additionally, the modified lens cap will serve as a hood for the set-up. Canon sold a macrophoto coupler kit that included such a device. They sell on eBay from time to time. Still, considering how easy it is to make your own from a $0.10 rear lens cap, I'd just do that.
02-24-2012, 10:24 AM   #27
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I think I'm going to try reverced 16-45 . Must find a way to attach it!
02-26-2012, 12:35 PM   #28
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If you like to look outside Pentax brand....Carl Zeiss Distagon 28/2.8 for Contax Yashica has some impressive reputation and is easily converted to K mount....
02-26-2012, 01:20 PM   #29
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K28/3.5 and K28/2 are the sharpest Pentax 28's for normal usage.
The latest takumar 28/3.5 should be the same as the K28/3.5, but they did change the lens formula once or twice.

If you just want to use it reversed there are as many has said here lots of alternatives. One very good 28mm that comes cheap (because it was made in large numbers and the only digital cameras it can be used on are mirrorless) is the (Konica) Hexanon AR 28mm f3.5.
02-26-2012, 08:24 PM   #30
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QuoteOriginally posted by Douglas_of_Sweden Quote
The latest takumar 28/3.5 should be the same as the K28/3.5
I highly doubt that. The K 28/3.5 has 8 elements in 7 groups while the SMC Takumar 28/3.5 has 7 in 7 according to the info in the respective lens review sections. Also, the reviews for the K suggests that it is a much better lens than the Tak and that it does not have as strong a sharpness fall-off towards the edges (quite noticeable with my copy indeed). It has been suggested that the K is derived from the Tak 35/2 instead, which has 8 elements in 7 groups as well.

Last edited by Ikarus; 02-26-2012 at 10:54 PM.
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