Questions tagged [chromatic-aberration]

In optics, chromatic aberration (CA, also called achromatism or chromatic distortion) is a type of distortion in which there is a failure of a lens to focus all colors to the same convergence point. It occurs because lenses have a different refractive index for different wavelengths of light (the dispersion of the lens). The refractive index decreases with increasing wavelength.

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What is Chromatic Aberration?

What is Chromatic Aberration? Is it a physical part of the lens, or just an optical illusion?
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Photographic techniques to avoid chromatic aberration?

I've read several informations here on Photo SE, as well as the wikipedia article on CA. I understand that it is inevitable that some amount of chromatic aberration shows up for a particular lens, ...
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Is this chromatic aberration?

I'm testing the Nikkor 105mm 𝑓/2.8G lens and noticed a strange thing on a photo which looks like chromatic aberration. Here's a small fragment of the photo showing the phenomenon: Click/tap on the ...
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2answers
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Where do these “redshifts” and “blueshifts” come from?

I make many product photos for the company I work for. For this I use Canon 400D with two external flash devices Walimex CY-600K. I've noticed an interesting effect on many of the photos I take with ...
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6answers
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Is there an easy way to force chromatic aberration?

A couple of months ago I was playing with my camera and a magnifying glass and I noticed that this glass produced a very soft chromatic aberration. Although the effect was pretty cool, I couldn't ...
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How to fix chromatic aberration with free software?

Here is a zoomed-in example of an image I shot that has a bit of discoloration due to the chromatic aberration of the lens. What's the easiest way to fix this problem using only free software such ...
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How can chromatic aberration be corrected within Photoshop?

I know there are many tools that correct chromatic aberration like Lightroom, Capture One and even Photoshop camera raw, but I would like to remove it manually within Photoshop (no plug ins etc) -how ...
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1answer
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How do I use the Chromatic Aberration correction tools in Lightroom?

When I upgraded from a 1000D to a 550D, my 18-55mm started to show more significant Chromatic Aberration. This is probably due to the 8mpx difference between the two cameras. Due to this, I've ...
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Is it technically possible to build a camera body to correct for lens defects?

Most lenses tend to be expensive because the lens needs to be very complicated in order to correct for various optical effects (aberration, etc). Is it possible to build a sensor and processor ...
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Canon DSLR Lens Correction

In Canon DSLRs there is an option to automatically correct Lens Vignetting and Color Fringing. When enabling this option, would it still be necessary to enable lens correction in LR4/Photoshop? If not,...
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Is it a bad idea to activate lens-corrections in camera, when also use lens-correction in Lightroom?

My EOS has the option to correct known lens-aberration which is activated at the moment. I use Lightroom (5.2) for post-processing, which can also correct lens-aberration. Is it a problem to ...
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Do convex lenses make parallel light rays of different wavelength converge to different points?

I'm starting to study cameras and lenses. By reading explanations and watching videos on convex lenses, I learnt that they make parallel light rays converge to a single point called the focal point. ...
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What determines whether chromatic aberration will be purple/green or red/cyan?

In my experience, both with my own photography and looking online, chromatic aberration is usually purple on one end and green on the other. However, I have also seen the same effect with red and cyan,...
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What causes longitudinal chromatic aberration on Nikon 50mm f/1.4D?

I have looked on my new 50mm lens photo (I have Nikon D90) and I see "purple fringing" around the unfocused objects (longitudinal chromatic aberration). What's is going on? Is it common for this lens (...
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Fixing chromatic aberration automatically with software

I am trying to fix chromatic aberration in images taken with wide lens industrial cameras. Searching the internet I didn't find a good software to do so. I tried Hugin and a few others, but without ...
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How do I avoid getting any chromatic aberration in my photographs?

Another question is how to correct it (suggested in proposals), but ... are there ways of avoiding it in the first place?
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3answers
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How to minimize/avoid purple fringing before/during shooting?

I know it is possible to avoid purple fringing using post-processing software's chromatic aberration correction capabilities but I have a few pictures where the one I'm using (Rawtherapee on Linux) ...
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2answers
691 views

Why does this camera generated JPEG look better than the software generated one? [duplicate]

I was post-processing some photos on Nikon's Capture NX-D I had taken during holidays with a B700 camera and noticed some chromatic aberration in a picture. When I compared the post-processed photo ...
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2answers
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Is it chromatic aberration? [duplicate]

I got green ghost-like lights. Where do they come from? How could I avoid them while shooting? How can I remove it in post processing? I tried using Lightroom chromatic aberration correction ...
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1answer
171 views

What causes blue and red gradient/shade around black spots in photos? [duplicate]

Right now I'm trying to improve the sharpness of my photos, and for that I've checking if my D7000 has some autofocus issues. Therefore I tested my 35mm f/1.8G and my 50mm f/1.4G. I figured that the ...