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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 23 Nov 2014 (Sunday) 16:34
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Canon 35L.. is this normal?

 
EchoShotz
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Nov 23, 2014 16:34 |  #1

So I just picked up my 35L and decided to take some photos of my 1D mark iii, and when I did I got this green and red fringing all over my white details that I have not seen appear on any other 35L pictures I've browsed through. Is this normal? Has a UC date code if that helps.


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JeffreyG
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Nov 23, 2014 16:40 |  #2

Yes, chromatic aberrations are typical in high contrast regions for almost all fast prime lenses, and certainly for all EOS fast prime lenses. You will get that kind of fringing with the 24L, 35L, 50L, 85L....

The green and red (near far) are due to LOCA, purple fringe will be found in the plane of focus.


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EchoShotz
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Nov 23, 2014 16:43 |  #3

JeffreyG wrote in post #17289061 (external link)
Yes, chromatic aberrations are typical in high contrast regions for almost all fast prime lenses, and certainly for all EOS fast prime lenses. You will get that kind of fringing with the 24L, 35L, 50L, 85L....

The green and red (near far) are due to LOCA, purple fringe will be found in the plane of focus.

Thanks for the reply. I knew it'd be there but didn't think it would be as obvious as that


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JeffreyG
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Nov 23, 2014 16:51 |  #4

It's funny, if you really try and make CA it is easy to do. But then in the majority of shots it is just no big deal.

When it does show up, it can be corrected. Here is an example where the shot had high contrast and so CA became a problem. I could fix it in Lightroom no problem.


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JeffreyG
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Nov 23, 2014 16:51 |  #5

For reference, this was the complete shot with the fringe corrected.


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EchoShotz
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Nov 23, 2014 17:04 |  #6

JeffreyG wrote in post #17289082 (external link)
It's funny, if you really try and make CA it is easy to do. But then in the majority of shots it is just no big deal.

When it does show up, it can be corrected. Here is an example where the shot had high contrast and so CA became a problem. I could fix it in Lightroom no problem.

Correcting it I suppose is an easy fix, but I do find it difficult to find a medium between getting rid of the CA and losing color in objects such as the your subject's lips in the fixed picture.


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JeffreyG
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Nov 23, 2014 17:07 |  #7

EchoShotz wrote in post #17289107 (external link)
Correcting it I suppose is an easy fix, but I do find it difficult to find a medium between getting rid of the CA and losing color in objects such as the your subject's lips in the fixed picture.

Yeah, that was a quick fix in LR. To do it right you need to mask and do the correction in a layer (which means not in LR).


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Nov 25, 2014 00:55 |  #8

You pretty much shot the perfect condition to bring out CA; high contrast with the subject tilted. Check out this test chart which exhibit green CA distant and purple CA closer to the camera

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Staszek
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Nov 25, 2014 01:51 |  #9

It's common, but most DSLRs now (5D3, 1Dx, etc) have chromatic aberrations (fringing) correction in-camera. Also, Lightroom has correction that is fairly automated and can be applied on import. That's probably why you don't see it in photos posted.


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Nov 25, 2014 08:27 |  #10

Staszek wrote in post #17291761 (external link)
It's common, but most DSLRs now (5D3, 1Dx, etc) have chromatic aberrations (fringing) correction in-camera.

I was under the impression that the in-camera correction was addressing lateral CA, not longitudinal CA (as in the OP) - does it actually address both?


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Canon 35L.. is this normal?
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