Why does the eye not suffer from Chromatic Aberration?

Why does the eye not suffer from Chromatic Aberration?

Doesn't it?

I guess because it's adaptive. It might have a simple one element lens, but the shape of that lens can be altered by muscular contracrion, the image shimmers over many pixels and is never still, so the interpolated resolution is immense and the software that controls the final perceived image is second to none. It sees what it wants to see and filters out the unwanted.

It even corrects the inverted image so things look the right way up. Experiments with mirror systems that inverted the image to the eye showed that after a few hours/days the system would correct things to show the right orientation.

Very clever stuff.

Eye see.

an easily taught pupil...

Andy

Actualty, the eye doesn't need multiple dedicated lenses as the angle of incidence of the different fluids in the eye also helps focus light.

So you have the Cornea as the objective lens, then in the same element you have the Aqueous Humor followed by the lens and the Vitreous Humor.

That is 4 'lenses', 3 of which change shape (the Humors have to change shape to accommodate the change in the Lens which further changes refraction and the way light is focused).


Plus some of the most advanced world reconstruction and simulation software in existence.

Where do you tend to see CA? Rarely in the centre of the image, more often at the edges.

Can you be sure there's no CA at the edges of your vision? Can't look to be sure, can you!

Dan

look at any thread where a lens is accused of having lots of CA and you'll quickly see someone suggest that most CA is easily removed in software.

The brain possesses some of the best image manipulation and reconstruction software known. It clones out your blind spot perfectly believably in real time, I'm sure it could manage a little bit of CA.

My eyes have CA after a night on the beer......

That is because beer reduces the processing speed of the brain because of the increased interference. All sorts of problems can arise in processing because of the beer. Try the same thing on your Pentax, I'm sure it won't be happy.

One from a while back.............................................

Organic lenses for all you eco-warriors!!! (casing is hardened cucumber rind)

AHHH BEER!
the ultimate diffusion filter!
Dreamy soft focus....
The girls all look prettier at closing time!!!

Don't forget to feed your organic lens though otherwise it will die and the animal rights activists (well extremists) will come after you!

The eye has got a brain which learns behind it (well some have)

Chris