Picture color quality

[silvercreek]

If I understand what I've been reading, "chromatic aberration" is one of the reasons for the lack of color quality we expect to see in some pictures. This factor can be caused by the quality of the glass used in lenses. The quality of glass is one of the reasons why some lenses are so much more expensive.

To quote only part of an article I am reading, "When different colors of light propagate at different speeds in a medium, their fractive index is wavelength dependent. This phenomenon is known asdispersion."

I know most of us aren't so concerned with this but I thought it was some interesting information and it make it a little easier to understand what is controlling the colors that we see compared to what goes through the lenses of our camera.

 

[stmv]

seems like the image sensors can soon account for that, and thru better on chip processing correct the effect, after all, it knows how far from the subject, the lens used, and such, that over time, it can take into account the shift in color rays, and make the correction real time..

Never underestimate the talent of engineers !

 

[Dave_W]

Diffraction raises it's ugly head when you move into higher resolution sensors. But diffraction is not so much a function of good vs. bad glass, rather it's a function of physics and not something glass alone can ameliorate.

 

[stmv]

exactly, and since light follows the rules of physics, unlike film, camera electronics can be intelligent, and begin to add processing rt to correct the Diffraction via alogorithms