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02-05-2009, 01:59 PM   #1
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DA 10-17 purple fringing

I'm thinking about this lens. The photozone.de review complains about purple fringing, and in their test shots it's indeed quite visible.

Is purple fringing a problem with this lens? To what degree?

I'd be using it with a K200D.

Thanks,

Reid

02-05-2009, 02:13 PM   #2
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EDIT: Sorry I thought I read 17-70mm....

Sorry about that
02-05-2009, 02:52 PM   #3
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I have the lens, and in some situations you will get a problem with purple fringing, but it does not seem to be a huge real world problem.

I would read Eyes vs. Numbers

I would then check out the ongoing post https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/33549-fisheye-...ye-photos.html

Many of those pictures are with the 10-17, including some of mine.

I got the 10-17 instead of a 10-20mm Sigma while I wait for the reviews of the 10-24 Tamron, and I love the lens.
02-05-2009, 04:21 PM   #4
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Under extreme conditions the DA 10-17mm will display purple fringing. Under most conditions however you shouldn't have a problem.

Extreme conditions:


Normal conditions:


02-05-2009, 04:27 PM   #5
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I don't recall ever seeing purple fringing with mine. I'm not saying it can't happen, I've just never encountered the conditions that produce the behavior.

Jer
02-05-2009, 04:36 PM   #6
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As suggested above...

Check out the Fisheye Fever thread and look for purple fringing. Then check the exif accompanying text to find out what lenses are at fault.

Steve

(Would be the last to say which lens has the most...)
02-05-2009, 05:31 PM   #7
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QuoteOriginally posted by jfsavage Quote
I would read Eyes vs. Numbers
Yeah, I've read that essay; I don't think I agree 100%. While it's true that numbers don't tell you everything, it's also true that instrument measurements can tell you things that you might not notice right away but which do in fact matter and which you might notice later. You have to balance instruments vs. your own perceptions based on the case at hand.

Anyway... I'm convinced. I ordered the lens. So now I'm covered all the way from 10mm to 250mm. Yow!

Amazon currently has the lens at $356 with free shipping. Seemed like a good deal.
02-05-2009, 07:23 PM   #8
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DA10-17 will definitely show purple fringe in extreme contrast situations. It is not alone in this regard. You need to learn to avoid these situations as, IMO, the lens has many positive attributes when used to its strengths. Dave

02-05-2009, 09:14 PM   #9
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Only purple fringing I've seen from this lens is when pointed directly at the sun. It is a great lens!

02-05-2009, 10:33 PM   #10
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Ah, ok... but that photo appears to have been taken from space! Do elaborate, please! I'm very curious....
02-05-2009, 11:30 PM   #11
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QuoteOriginally posted by rpriedhorsky Quote
Ah, ok... but that photo appears to have been taken from space! Do elaborate, please! I'm very curious....
https://www.pentaxforums.com/forums/pentax-dslr-discussion/43930-pentax-k10d-space-ii.html
02-06-2009, 03:13 AM   #12
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QuoteQuote:
Is purple fringing a problem with this lens? To what degree?
Yes. Sometimes.
Of all lenses I own it shows the strongest PF by far.
For a normal lens I wouldn't accept that, of course.
But it's such a fun lens, that I accept it at that price and that extreme focal range.

In practice it is rarely a serious problem.

Here is the strongest example I could finde among my shots.
It is a 100% crop from the top left corner.

10mm, f5.6
02-07-2009, 04:39 AM   #13
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Avoiding or dealing with PF is a bread and butter skill for any pentaxians
02-07-2009, 04:46 AM   #14
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Second James on Pentax lenses & PF.
It's perhaps the weakness of Pentax glass, which can be limited to a degree with PP.
Otherwise, the DA 10-17 is just such a top FE lens, with the most brilliant colour rendition I have seen come through out of all the other consumer range lenses.
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