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01-31-2014, 01:17 AM   #31
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QuoteOriginally posted by tibbitts Quote
The purple fringing definitely seems to be a weak point of the Tamron lens. I'm just wondering whether advances in software have somewhat minimized this particular disadvantage relative to the 55-300. For example, I've also noticed that compared to my old 100-300F, the 55-300 has outstanding contrast in raw output. But with a little PP, the results become very close.
It's certainly now possible to get rid of purple fringing with the improved tools of e.g.Lightroom or Raw Therapee quite easily and with little side effects, it's just a matter if you're willing to invest the necessary time... same is true with contrast, with a bit of PP knowledge and e.g. global/local contrast adjustments you can push even average lenses into Limited territory, but it might be tedious if you have lots of pictures to work on. In addition, some contrast/sharpness enhancement tricks can have unwanted side effects and e.g. screw up skin tones somewhat.

01-31-2014, 07:17 AM   #32
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QuoteOriginally posted by schnitzer79 Quote
not bad considering all the cropping and resizing. yeah i think im convinced on the 55-300.However, I might wait a little longer to see if i can find a good deal on the tokina 100-300 f/4.
There's a Tokina F4 100-300 on ebay for $150.
01-31-2014, 08:18 AM   #33
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yep ive seen your PM but unfortunately it cant be shipped to my country
01-31-2014, 08:50 AM   #34
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A lot of harping about PF with the Tamron. I must have an experimental one because I have to try very hard to get mine to exibet this so called trait. I bought mine for a super price thinking I'd trade it for the Pentax 55-300 down the road. Being so pleased with it, I'm keeping it.

01-31-2014, 09:39 AM   #35
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Its not that easy to remove purple fringing. This is a heavily cropped bird photo from my Tamron 70-300mm with my K-x from 2010, 4 years ago. Its about 1200mm equivalent focal length. If you notice, the skinnier branches on the right, and others have a purple tone to them. My experience was that fine details with side/back lighting tended to get that kind of a false purple shading with the Tamron 70-300mm. That's PF, and its not that easy to get rid of...

Last edited by sheld; 01-31-2014 at 09:46 AM.
01-31-2014, 10:04 AM   #36
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Purple fringing is not always correctable, sometimes you can correct the colour, but the resolution is always lost, this is the best I could do with this one.

Taken with the A-400 which being only a 7 element lens is prone to CA and fringing, and also using the 1,7 TC, which seems to make both CA and fringing even worse...



The black outline around the bird's head used to be purple... it's not purple anymore, but it's still not right.

That being said, I get lots of good images from this lens, don't let a little purple fringing every now and then hold you back.

100 great images taken with my "fringe monster". Fringing schminging I say.

No modern lens is going to fringe like this lens, and it's rarely an issue. Start talking about eliminating fringing, and you're talking about adding weight. You never get anything for free.

Don't get me wrong, I love my DA* 60-250 razor sharp and heavily corrected, but the A-400 ƒ5.6 weighs about the same, maybe even a little lighter, for a lot more reach.

Last edited by normhead; 01-31-2014 at 10:15 AM.
01-31-2014, 11:41 AM   #37
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My M 400/5.6 can display gorgeous purple colouration as well. At f/11 I can usually reduce it to levels that aren't noticeable, but it is still there. I don't think the AFA 1.7X is the problem itself, I think it just makes the PF 1.7X as bad.
01-31-2014, 11:53 AM   #38
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QuoteOriginally posted by Canada_Rockies Quote
My M 400/5.6 can display gorgeous purple colouration as well. At f/11 I can usually reduce it to levels that aren't noticeable, but it is still there. I don't think the AFA 1.7X is the problem itself, I think it just makes the PF 1.7X as bad.
Or it could be a little of both, who knows? It definitely doesn't make it any better though,

01-31-2014, 01:45 PM   #39
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QuoteOriginally posted by normhead Quote
Or it could be a little of both, who knows? It definitely doesn't make it any better though,
It is for sure it doesn't make it any better!
03-13-2014, 12:51 AM   #40
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ended up buying the DA 55-300. came in yesterday, only took a couple of pics and seems really sharp around f8. will test it properly over the weekend and report back!
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