Is this chromatic aberration or something else? (Page 2): Hi Nikonbrain, I don't recall that the OP stated the lens or camera being used. The top Canon and Nikon lenses are...

Doc Barry Loc: Huntsville, Alabama USA

nikonbrain wrote:

This anomaly cannot be fixed with a filter it is ... (show quote)

Hi Nikonbrain,
I don't recall that the OP stated the lens or camera being used. The top Canon and Nikon lenses are apochromatic designs that have color well corrected within the designed spectral range. Many of the lesser quality lenses don't have the deep blue well corrected and this can cause color fringing. By putting in a UV filter that passes light with wavelengths greater than around 400 nm, the color fringing can often be mitigated. I agree with you about using 3rd-party inks!

nikonbrain Loc: Crystal River Florida

Doc Barry wrote:

Hi Nikonbrain,
I don't recall that the OP stated the lens or camera being used. The top Canon and Nikon lenses are apochromatic designs that have color well corrected within the designed spectral range. Many of the lesser quality lenses don't have the deep blue well corrected and this can cause color fringing. By putting in a UV filter that passes light with wavelengths greater than around 400 nm, the color fringing can often be mitigated. I agree with you about using 3rd-party inks!

If you are buying better lens this problem is not present because they are using better elements ... My Nikkor 14mm-24mm f2.8 does not experience CA. ...It is of better quality.. to stick a much cheaper piece of glass in front of it would defeat paying what I paid for it .. I do not have any lenses showing that degree of fringing as Pro caliber lenses are more highly corrected for chromatic aberrations. I am not being high on a horse but I have been shooting since the film era and chosen good glass and weeded out the bad . If I had a piece of glass that had a color fringe problem I would rather shoot Raw and easily correct it In CS6 inside merely seconds than try to correct it with a filter ...since I print for a handful of clients I work on their images for printing and a lot of them shoot with lesser quality lens and cameras so I have a lot of experience in fixing CA in images and it is much more difficult on JPEGS ...it comes with the territory.

bleirer

Read any lens test review and you never find one with zero CA. Wide open or a stop in is where it happens the most, then reduces as you stop down.

Doc Barry Loc: Huntsville, Alabama USA

nikonbrain wrote:

If you are buying better lens this problem is not ... (show quote)

All of my glass is also Nikon pro-glass. Actually, many of the 3rd party lenses are quite well corrected for CA except that some break down in the deep blue and the deep red (NIR) with the deep blue being the least corrected. A proper quality UV filter often can solve the problem with the color fringing as I said. As always, there are additional advantages and disadvantages using filters or not.

Delderby Loc: Derby UK

nikonbrain wrote:

This anomaly cannot be fixed with a filter it is ... (show quote)

I have a Panasonic 45-175 PZ which has two ED lenses. Whilst this is a great lens it is not unaffordably expensive. So far as the OP's unwanted purple problem is concerned, my experience of this type of aberration is limited, but I think there is more to it than CA?

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

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?

You took the shots from different angles, I appears you also use an auto function instead of shooting manual.
When you change locations in auto, this is the result, it is not as consistent as manual.
And, lighting was not from behind you, which is best to get that blue beak on the tri colored heron. When the subject is part back light, exposure becomes inconsistent. Washout can also happen as shown here in your photo's.

jerseymike

Jerry G wrote:

No, I mean chromatic aberration.

I guess you really helped him. You asked a question and received some help. That person was not as lucky as you.

bleirer

jerseymike wrote:

I guess you really helped him. You asked a question and received some help. That person was not as lucky as you.

The OP did answer my question.

bbrown5154 Loc: Baltimore, MD

Screamin Scott wrote:

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......

camerapapi Loc: Miami, Fl.

Although it has been already discussed I would like to add my 2 cents. Chromatic aberration is pretty common. Low dispersion glass is supposed to suppress it but it does not necessarily work like that with digital. More or less the ugly face of fringing will be often seen even with good lenses.
As it has been indicated most editing softwares offer a solution. I have found that it is not always that easy to suppress and some lenses are worse than others.
Your images have lots of purple fringing.

dsmeltz Loc: Philadelphia

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?

The metering changed between photos so the CA is easier to see in the second. However, in both there is considerable CA visible in the bushes.

elliott937 Loc: St. Louis

Definitely CA. I could even use your image for my students to see.

Now, for correction. Photoshop has a feature to address CA. I would also like to share with my great UHH friends that the newest update to Affinity Photo, only days old, now includes specific lenses, and perhaps there would be a CA correction for you lens there.

frankraney Loc: Clovis, Ca.

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?

CA....it's not just on the bird.....

Jerry G Loc: Waterford, Michigan and Florida

jerseymike wrote:

I guess you really helped him. You asked a question and received some help. That person was not as lucky as you.

If you read the posts you would know he uses lightroom to correct chromatic aberration. I told him it is the same in photoshop.

nadelewitz Loc: Ithaca NY

Could it be a change in diffraction of sunlight off the feathers with a slight change in angle, brightness because of clouds.....?