12-03-2010, 07:33 PM
[quote name='Lomskij' timestamp='1291400276' post='4741']
Interesting. However I'm a bit confused by the following (longitudinal chromatic aberrations):
"As the human eye and autofocus systems are particularly sensitive to green light, both manual focus and autofocus tend to bring the green image in sharp focus. The other colors of the spectrum are left defocused and add up to a magenta fringe. For this reason purple fringing is more common than green fringing."
Is that so?
[/quote]
Is what so?
Nature is "green". evolutionary our vision is more sensitive to greens, we are able to detect more green shades than other colour's shades.
This makes scientists, developers and manufacturers to put the biggest importance in greens. For RGB sensors (for instance with bayer CFA) it is not by accident that they have chosen to make 2 out of every 4 sensels detect green. And it is probably also true that most AF systems try to get green in focus.
Interesting. However I'm a bit confused by the following (longitudinal chromatic aberrations):
"As the human eye and autofocus systems are particularly sensitive to green light, both manual focus and autofocus tend to bring the green image in sharp focus. The other colors of the spectrum are left defocused and add up to a magenta fringe. For this reason purple fringing is more common than green fringing."
Is that so?
[/quote]
Is what so?
Nature is "green". evolutionary our vision is more sensitive to greens, we are able to detect more green shades than other colour's shades.
This makes scientists, developers and manufacturers to put the biggest importance in greens. For RGB sensors (for instance with bayer CFA) it is not by accident that they have chosen to make 2 out of every 4 sensels detect green. And it is probably also true that most AF systems try to get green in focus.