Is this chromatic aberration or something else?
Mar 2, 2020 14:01:47 #
The these two pictures were taken 30 seconds apart. The first one shows very little purple tint on the back of the head but the last one has a lot of purple tint in the feathers. It really does not look like chromatic aberration, does anyone have an explanation?
Mar 2, 2020 14:12:59 #
Could be. You could toggle your lens correction in your editor, see if it changes. Another idea is look at the histogram, if one color is blown sometimes the color looks strange in the image. I'm sure you will get more experienced eyes soon.
Mar 2, 2020 14:13:41 #
Both show CA... Anytime there is a division between very light and darker edges, this will appear. Stopping the lens down may help but better to fix in Post (Lightroom has a good CA slider).
Mar 2, 2020 14:15:53 #
Mar 2, 2020 14:18:14 #
Note the purple fringing on the frontal edge of the bird in the first image plus lots of fringing in the leaves on both shots......
Mar 2, 2020 14:21:25 #
Treborteko1
Loc: New Jersey
In the second pic the neck of the bird is compressed more then in the first. The difference in contrast between the sky/clouds and bird seems to be greater as well. Enlarge the downloads and you can see the following edge of the bird neck with more purple. I'm not an expert but that's the way it looks to me.
Mar 2, 2020 14:23:11 #
[quote=Jerry G]The these two pictures were taken 30 seconds apart. The first one shows very little purple tint on the back of the head but the last one has a lot of purple tint in the feathers. It really does not look like chromatic aberration, does anyone have an explanation?[/quote For sure its chroma I got rid of the purple and green in about 35 seconds in CS6 ACR adobe camera raw . a simple adjustment... in the tree also.
Mar 2, 2020 15:06:57 #
Jerry G wrote:
The these two pictures were taken 30 seconds apart. The first one shows very little purple tint on the back of the head but the last one has a lot of purple tint in the feathers. It really does not look like chromatic aberration, does anyone have an explanation?
Do you have a UV filter installed, and if so, what model is it?
Mar 2, 2020 16:36:06 #
Thank you all for your help. It was chroma, I fixed it in Photoshop, Lightroom couldn't handle it. I had never seen it look quite that bad before. What I found interesting is it got steadily worse through about twelve pictures. Oh Doc, no filters.
Update: I'm new to Lightroom and Photoshop and after some more poking around I managed to fix it in lightroom.
Update: I'm new to Lightroom and Photoshop and after some more poking around I managed to fix it in lightroom.
Mar 2, 2020 16:49:52 #
Jerry G wrote:
Thank you all for your help. It was chroma, I fixed it in Photoshop, Lightroom couldn't handle it. I had never seen it look quite that bad before. What I found interesting is it got steadily worse through about twelve pictures. Oh Doc, no filters.
Update: I'm new to Lightroom and Photoshop and after some more poking around I managed to fix it in lightroom.
Update: I'm new to Lightroom and Photoshop and after some more poking around I managed to fix it in lightroom.
By chroma do you mean color noise?
Mar 2, 2020 16:51:47 #
bleirer wrote:
By chroma do you mean color noise?
No, I mean chromatic aberration.
Mar 2, 2020 16:55:32 #
Jerry G wrote:
No, I mean chromatic aberration.
So how do you fix that in Photoshop, I usually turn to Lightroom lens profile?
Mar 2, 2020 17:13:42 #
bleirer wrote:
So how do you fix that in Photoshop, I usually turn to Lightroom lens profile?
Same as in Lightroom.
Mar 2, 2020 19:29:50 #
Jerry G wrote:
Thank you all for your help. It was chroma, I fixed it in Photoshop, Lightroom couldn't handle it. I had never seen it look quite that bad before. What I found interesting is it got steadily worse through about twelve pictures. Oh Doc, no filters.
Update: I'm new to Lightroom and Photoshop and after some more poking around I managed to fix it in lightroom.
Update: I'm new to Lightroom and Photoshop and after some more poking around I managed to fix it in lightroom.
Jerry, you might try a good UV filter on the lens. Pick one that cuts on about 400 nm. This may have the chromatic aberration problem you have. Best to fix on the image acquisition rather than in post I feel.
Mar 2, 2020 20:36:17 #
Doc Barry wrote:
Jerry, you might try a good UV filter on the lens. Pick one that cuts on about 400 nm. This may have the chromatic aberration problem you have. Best to fix on the image acquisition rather than in post I feel.
This anomaly cannot be fixed with a filter it is the lens causing the aberrations. It is the failure of the lens to focus all colors to the same point it is caused by dispersion. The different wavelengths of light travel at different speeds and reach the focal plane which is your sensor at different times or places before or after your sensor. It depends on the construction of your lens ...and the coatings , and build quality of the lens . This is why ED glass elements are used also called Extra dispersion glass .. and it becomes apparent why you paid more for that Canon or Nikon or pentax lens over a third party lens ...sorry to say you get what you pay for .. I only own Nikon Glass if I owned a Canon it would be Canon glass .. I shoot a Nikon but print on a Canon large format printer and I would never put third party ink in it . It was designed by Canon to use their ink . We each have decisions to make the good news is most CA is easily corrected with a flick of the switch or lens profile chosen by Lightroom or Photoshop IN ACR
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