27 votes
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Do convex lenses make parallel light rays of different wavelength converge to different points?

Do convex lenses make parallel light rays of different wavelength converge to different points? Yes. The separation of different wavelengths of light is called dispersion. Different wavelengths of ...
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21 votes

Do convex lenses make parallel light rays of different wavelength converge to different points?

Light from a far distance object, like a star, arrive at the lens, as parallel rays. As they transverse the lens, they are forced to change their direction. They bend inward, we call this refraction ...
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14 votes
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What is the blue halo around objects when using a teleconverter?

The blue halo is often referred to as purple fringing. It is caused by chromatic aberration. According to Wikipedia: There are two types of chromatic aberration: axial (longitudinal), and ...
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12 votes
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Different colors of light are disrupting my focus. What lens feature minimizes this?

You are seeing chromatic aberration — a prismatic effect which, as you nicely illustrate, reduces sharpness even in black and white photography. A lens which has greater correction for this is ...
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9 votes
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Why does this satellite image of an airplane in motion show red, green, and blue bands with strange artifacts?

AJ is correct here. What you are seeing is the result of motion blur as both the satellite and the aircraft are in motion relative to the ground (the desired target of the photo). Those pretty ...
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  • 106
8 votes

Do convex lenses make parallel light rays of different wavelength converge to different points?

Yes, they do. This is the cause of chromatic aberration. It happens in two ways, actually. Axial chromatic aberration (also known as longitudinal CA) happens because different wavelengths focus at ...
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7 votes
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Weird rainbow colored chromatic aberration

There's certainly nothing wrong with your lens, or camera for that matter. This doesn't look anything like a lens based chromatic aberration, but instead it looks like an image processing issue. My ...
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7 votes

Why does this satellite image of an airplane in motion show red, green, and blue bands with strange artifacts?

My best guess is that it may have to do with how the satellite operates. It may capture red green and blue images separately and then combine them. If this is the case, then two things would happen. ...
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7 votes

Is it just me, or do smartphone cameras not have any chromatic aberations at all?

It is likely because chromatic aberrations are easy to fix on a fixed focal length, and fixed focus lens. And whatever remains is hidden by the heavy-handed post-processing that occurs.
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6 votes
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Is high Chromatic Abberation typical with the Pentax f/1.8 50mm lens?

I think what we see here is not the traditional lateral chromatic aberration. This is appearing in the center of the image, in more or less blurred area, the color is blue and purple and is dependent ...
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6 votes

How to fix chromatic aberration with free software?

Darktable can remove chromatic aberrations if you are shooting raw. Your example image is a JPEG so I can't demonstrate how it works with that, but above is a screenshot of it removing the chromatic ...
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6 votes
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Does chromatic aberration always have the colours displaced in the same way or does it depend on the lens?

Chromatic aberration comes about because the index of refraction of the glass used in the lens varies with frequency. You would expect the first order effect to be linear with frequency, but of ...
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6 votes
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Why is low chromatic aberration considered important in the digital era?

ideal image - no abberration: simulated chromatic aberration: correcting the chromatic aberration by adjusting the RGB channel positions (in a more realistic example this would also involve ...
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5 votes

What causes color imbalance, and how does it relate to chromatic aberration?

These concepts are almost entirely unrelated. Color balance, or white balance, is generally a global correction meant to compensate for the characteristics of the light in the scene, to make it ...
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5 votes
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Is it chromatic aberration?

It is a type of lens flare known as ghosting. The brightest lights in the scene are reflected on the internal surfaces of your filter, lens, and possibly sensor stack. It produces a reversed and ...
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5 votes
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Chromatic aberration or lighting problem?

That is normal "Axial" or "longitudinal" chromatic aberration and it is very common with fast lenses when used at wide open apertures. It is sometimes called "Bokeh Fringing" and yes, even expensive ...
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5 votes

How do I remove the green and purple fringing from the B&W blouse in this photo?

Since the cloth is white, and the other colour is black, you could simply desaturate( remove all saturation) at whole region of cloth. I've done the same multiple times
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5 votes
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Why does this camera generated JPEG look better than the software generated one?

It's important to start with this: in-camera generated JPEGs are also software-generated. They're just generated on a small embedded computer with a lot less processing power than a laptop or desktop ...
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4 votes

Why does this satellite image of an airplane in motion show red, green, and blue bands with strange artifacts?

Looking at the imagery, it was not provided exclusively by a satellite. I work for the company that built the sensors and cameras for Digital Globe WV3 and WV4 sensors and did sensor, motion ...
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4 votes

Is high Chromatic Abberation typical with the Pentax f/1.8 50mm lens?

You're not seeing ordinary lateral chromatic aberration, but longitudinal chromatic aberration, which occurs in front or behind the plane of focus with fast lenses. Both types of chromatic aberration ...
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4 votes

Why does Lightroom disable chromatic abberation correction by default?

To answer the question in the title: Because not every photo has chromatic aberration, and therefore not everyone wants to enable the fix. Also, since automatic defringing looks for fringe colors to ...
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4 votes
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Is this chromatic aberration?

Prevailing opinion seems to be that purple fringing is caused primarily by axial chromatic aberration. Chromatic aberration comes in two forms: lateral and axial. Lateral chromatic aberration is ...
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  • 18.7k
4 votes

How can I avoid those pink/purple lines in my portrait photos?

As established in comments, it's chromatic aberration, specifically purple fringing which you see mostly at high contrast edges in out of focus areas. You can mitigate it by closing down the aperture ...
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4 votes
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Is this just chromatic aberration? Or is something else happening in these photos?

The primary reason both images look blurry is because in both of them the point of sharpest focus is closer than most of the scene. Shooting with a wide open aperture minimizes depth of field, so ...
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  • 168k
3 votes

Is the weird red and yellow patch near the center of my photo chromatic aberration?

The strip of colour near the centre of the image is the result of what is known as lens flare. This occurs due to light directly from a bright source within, or just outside, the field of view being ...
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3 votes
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Is the weird red and yellow patch near the center of my photo chromatic aberration?

So, that's not chromatic aberration, it's lens flare or halo. This is usually caused by shooting with the sun in front of the lens, but not directly in the image, resulting in reflections within the ...
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  • 32.4k
3 votes

Is high Chromatic Abberation typical with the Pentax f/1.8 50mm lens?

What you're experiencing is called spherochromatism. As described in this LensRentals blog post, spherochromatism is basically spherical aberration that varies with the light wavelength. This results ...
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3 votes
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Why is chromatic abberation correction disabled by default in a Canon 700D?

I have a 650D and I am pretty sure the 700D would have a similar issue I have noticed with enabling jpeg correction. Basically, if you shoot just raw you will get a burst of 6 pictures before you ...
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