*Very* Strong Chromatic Abberation on the Canon 50mm f/1.4: Normal?

(Disclaimer: I fully realize that these shots are badly underexposed. I highly doubt I will keep them even after I attempt to remove the CA.)

With that out the way, here they are:

At f/2.0

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Have never seen it that strong, what body are you using ?

Filter in front of lens?

That's pretty much worst case for CA--backlit leaves against severely blown sky--so I would be hard pressed to say that this is entirely out of spec. And there appears to be a marked improvement as you stop down from f/2 to f/3.2. Even so, this is rather severe.

Do you encounter similarly strong aberration artifacts in other everyday shots?

No lens filters. I'm using a 60D.

It looks like this might be the *second* lens that goes back to Canon in two weeks. This is incredibly frustrating.

Albert Nam wrote in post #14727966
That's pretty much worst case for CA--backlit leaves against severely blown sky--so I would be hard pressed to say that this is entirely out of spec. And there appears to be a marked improvement as you stop down from f/2 to f/3.2. Even so, this is rather severe.

Do you encounter similarly strong aberration artifacts in other everyday shots?

I've never taken any other shots with this lens outdoors.

Other users have reported strong CA wide open. Granted, this is terrible...

I would take some more photos. I would say that is not enough to base a problem with the lens. GIve it a test run in a few other situations and see what happens.

Blowing out highlights at wide apertures is usually the prime recipe for purple fringe.

Have you tried to correct this in post at all?

Your results look normal for this lens under these conditions. The 50mm f/1.2 L does this too.

Good raw converters like DxO Optics Pro correct purple fringing like this easily.

It looks like some of this may be from post proc? I see some odd things there in the dirt and bushes, maybe from saturation or something.

I don't think it needs to go back, the lens will fringe like crazy when it is open, and you have the worst possible scenario to create it with a totally blown sky and underexposed subject. On other pics is it as bad?

bamatt wrote in post #14732093
It looks like some of this may be from post proc? I see some odd things there in the dirt and bushes, maybe from saturation or something.

No.

I never boosted saturation. The "Contrast" and "Blacks" levers were lightly reduced in ACR before posting. That's it. (These looked absolutely *god-awful* before doing this. They are still bad, but it *was* worse.)

I've never been happy with my 50's performance in the sharpness or CA areas. That was the main reason for me buying the 40mm pancake. If I'm going to have a lens that is only usefull at f/2.8 or slower, then I'm going to have a lens that starts there. Your samples (while taken in the absolute worst conditions possible) show the same thing I get with my 50mm f/1.4, so I would say it is normal, for me at least/

tkbslc wrote in post #14731436
Blowing out highlights at wide apertures is usually the prime recipe for purple fringe.

Ironically, I wish I had blown them out even more.

The shadows are crushing at -1/3.