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Author Topic: 70-200mm f/2.8L IS II chromatic aberration  (Read 6615 times)

cheeseheadsaint

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #15 on: May 27, 2012, 08:58:22 AM »
I used B+W MRC haze filter... do you guys think that might be the problem? :/

and I always thought chromatic aberration and color fringing were the same thing? How can you tell color fringing from chromatic aberration?
« Last Edit: May 27, 2012, 09:05:16 AM by cheeseheadsaint »
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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #15 on: May 27, 2012, 08:58:22 AM »

victorwol

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #16 on: May 27, 2012, 12:31:25 PM »
Haven't seen such a thing on my copy...
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D_Rochat

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #17 on: May 27, 2012, 12:33:39 PM »
I used B+W MRC haze filter... do you guys think that might be the problem? :/

and I always thought chromatic aberration and color fringing were the same thing? How can you tell color fringing from chromatic aberration?

I use that same filter on my 70-200 II without any problems.

cheeseheadsaint

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #18 on: May 27, 2012, 10:05:22 PM »
This isn't the first time I've seen color fringing like this on my shots. is this a real problem? Meanwhile I'll try out the software
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D_Rochat

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #19 on: May 27, 2012, 10:39:29 PM »
You shouldn't have to correct that in PP with that lens. I'd return it and get another copy. It sounds like you're just unlucky.

Mt Spokane Photography

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #20 on: May 28, 2012, 12:20:15 AM »
Its purple fringing.  Most lenses have it at wide apertures where there are sudden light to dark transitions, and the 70-200mm L MK II is no exception. 
 
If you use lr4, you can pretty well remove it, however, as a side effect, it removes the purple from the entire image, so the skin tones were affected.  They can be fixed, but I did not want to spend the time.
 
Before (Top)
 
After (Bottom)
« Last Edit: May 28, 2012, 12:24:45 AM by Mt Spokane Photography »

cheeseheadsaint

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #21 on: May 28, 2012, 07:37:08 PM »
So this amount of color fringing is perfectly normal?


This is unedited, earlier on the same day.
Canon Rebel XSi, kit lens, 50mm f1.8, ef-s 55-250mm IS, EF 70-200mm f/2.8L IS II, 6D

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #21 on: May 28, 2012, 07:37:08 PM »

cheeseheadsaint

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #22 on: May 28, 2012, 07:43:42 PM »
and where do I find the DLO or CA module in DPP?
Canon Rebel XSi, kit lens, 50mm f1.8, ef-s 55-250mm IS, EF 70-200mm f/2.8L IS II, 6D

Mt Spokane Photography

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #23 on: May 28, 2012, 10:04:37 PM »
and where do I find the DLO or CA module in DPP?

DPP does not do a good job of removing purple fringing, its reduced a bit, and triples the size of your file.  Other software cannot read the alterations in the cr2 file, so you must save it as tiff or jpeg to see the changes.  Its not a very easy solution compared to lightroom.

Tcapp

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #24 on: May 29, 2012, 05:22:22 AM »
if you're not happy with your version II, ill trade you my version I

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Actionpix

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #25 on: May 29, 2012, 07:24:56 AM »
I also have occasional CA problems with this lens. I try to cure it in RAW. In RAW I can control intensity and luminance of purple. This way it gets less visible.

avatar13

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #26 on: June 05, 2012, 03:56:23 PM »
I used B+W MRC haze filter... do you guys think that might be the problem? :/

and I always thought chromatic aberration and color fringing were the same thing? How can you tell color fringing from chromatic aberration?

My understanding is that purple fringing is a type of CA so I think in your case they are the same.  I am surprised at the amount being produced by your copy, have you had the lens for long?  I have the same lens and it's perfect, I have yet to notice it but I don't think i have photographed such extreme transitions yet between white/dark but I have photographed tree leaves and such against the sky and typically those will show CA as well.  Try again without your filter, if it's your copy you can try having Canon take a look as I'm sure it would be a warranty item or just remove in PP.

cheeseheadsaint

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #27 on: June 06, 2012, 02:00:37 PM »
avatar13: I've had the lens since January. Yesterday I did some graduation pictures and again the color fringing is thick. I forgot to remove the filter! Next time I'll try it out without the filter.
Canon Rebel XSi, kit lens, 50mm f1.8, ef-s 55-250mm IS, EF 70-200mm f/2.8L IS II, 6D

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Re: 70-200mm f/2.8L IS II chromatic aberration
« Reply #27 on: June 06, 2012, 02:00:37 PM »