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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 04 Mar 2018 (Sunday) 21:10
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EOS 80D and Tamron 16-300mm f/3.5-6.3 Di II VC PZD Macro Chromatic Abberation

 
derekb007
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Joined Mar 2018
     
Mar 04, 2018 21:10 |  #1

Picked up the 80D in November and also this lens. Both new. As you can see in the sample images serious issues with some kind of abberation(bright green) in photos. I can correct in lightroom with the proper profile but concerned that the lens is faulty. No issues with the new canon lenses I purchased with the camera. Have a 1000+ images from my Hawaii Vacation i just took and alljpegs show the problem. Luckily I shot all in Jpeg + Raw. Any suggestions appreciated.


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BigAl007
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Mar 06, 2018 10:20 |  #2

Unfortunately a rather extreme example of the sort of CA you can get when using a superzoom and are dealing with very high contrast scenes. If I had bought the lens new and it showed that much CA I would be inclined to send it to the manufacturer under warranty, and ask them to do a propper check and alignment on the thing. This may actually be one of those situations where a repair, if possible, would be better than simple replacement. Since you would at least know the lens had been properly set up. Do you know anyone else with a Canon body that you can try the lens on, to see if it is a particular combination of lens/body, or just the lens?

If you bought the lens as a nearly new second hand item, then I guess you now know why they unloaded the lens on you. I would again suggest checking performance on another Canon body, just to confirm how bad it really is. If you bought second hand and have no real easy recourse to the seller, I would try talking to Tamron and see if they will help you out. If you ask nicely they might be willing to help you out, at least partially, with the cost of a repair. Many companies are willing to try to maintain good will.

Alan


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mwsilver
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Post edited 3 months ago by mwsilver.
     
Mar 06, 2018 12:09 |  #3

derekb007 wrote in post #18577777 (external link)
Picked up the 80D in November and also this lens. Both new. As you can see in the sample images serious issues with some kind of abberation(bright green) in photos. I can correct in lightroom with the proper profile but concerned that the lens is faulty. No issues with the new canon lenses I purchased with the camera. Have a 1000+ images from my Hawaii Vacation i just took and alljpegs show the problem. Luckily I shot all in Jpeg + Raw. Any suggestions appreciated.


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Hosted photo: posted by derekb007 in
./showthread.php?p=185​77777&i=i244404263
forum: Canon EOS Digital Cameras



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Hosted photo: posted by derekb007 in
./showthread.php?p=185​77777&i=i225987493
forum: Canon EOS Digital Cameras

Do you see the purple fringing on all of your photographs or is it just on more of them than you were hoping it would be? While there's always the possibility this may be specific to your copy of the lens, a quick search of the internet turned up a number of comments about the large amount of chromatic aberration especially in high contrast shots, and in the 200mm to 300mm range. And if you're cropping the images of course, any chromatic aberration present will become much more apparent. Even review tests show chromatic aberration on this lens is a mixed bag. In some respects it's very good for a super zoom lens, but in some other respects it's quite high. As I said, it's possible that it's your copy, or it's possible what you're seeing is what is normal for this lens. If it is in fact normal for this lens, perhaps you've outgrown the general level of IQ that these lenses are capable of providing. Frankly, most people who use superzoom lenses regularly usually don't even seem to notice the chromatic aberration, barrel distortion, or lens softness inherent in most of them


Mark
Canon 7D2, 60D, T3i, T2i, Sigma 18-35 f/1.8, 30 f/1.4. Canon EF 70-200 L f/4 IS, EF 35 f/2 IS, EFs 10-18 STM, EFs 15-85, EFs 18-200, EF 50 f/1.8 STM, Tamron 18-270 PZD, B+W MRC CPL, Canon 320EX, Vanguard Alta Pro 254CT & SBH 250 head. RODE Stereo Videomic Pro, DXO PhotoLab, Elements 15

  
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russbecker
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Mar 06, 2018 16:03 |  #4

I rented this lens as a one-size-fits-all travel lens paired with a 7D2 a couple of years ago. Going through my cataloged photos with this lens, I don't see any having this much CA at focal lengths above 200mm in high contrast situations; this suggests the CA the OP shows is more specific to his copy. I would definitely contact Tamron and see if there is some servicing they can do for the lens.

I have a Sigma 50-150 which is a serious CA producer at 150mm in these kinds of scenes.


7D2 | 7D | 80D | 40D | 100-400 f/4-5.6 IIL | 300 f/4 L | 70-200 f/2.8 IIL | 70-200 f/4L | 135 f/2 L | 85 f/1.8 | 100 f/2 | 60 f/2.8 macro | nifty-fifty | 10-22 f/3.5-4.5 | Tamron 150-600 | Tamron 17-50 f/2.8 | Sigma 30 f/1.4 | Sigma 50-150 f/2.8 | Sigma 120-400

  
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sidknee
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Mar 06, 2018 17:15 |  #5

derekb007 wrote in post #18577777 (external link)
Picked up the 80D in November and also this lens. Both new. As you can see in the sample images serious issues with some kind of abberation(bright green) in photos. I can correct in lightroom with the proper profile but concerned that the lens is faulty. No issues with the new canon lenses I purchased with the camera. Have a 1000+ images from my Hawaii Vacation i just took and alljpegs show the problem. Luckily I shot all in Jpeg + Raw. Any suggestions appreciated.


thumbnail
Hosted photo: posted by derekb007 in
./showthread.php?p=185​77777&i=i244404263
forum: Canon EOS Digital Cameras



thumbnail
Hosted photo: posted by derekb007 in
./showthread.php?p=185​77777&i=i225987493
forum: Canon EOS Digital Cameras

It's something to do with the aberration correction in camera clashing with the lens, or something, just saw this in another thread

http://www.tamron.eu/s​ervice/service-news/ (external link)




  
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EOS 80D and Tamron 16-300mm f/3.5-6.3 Di II VC PZD Macro Chromatic Abberation
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