A very good lens (high quality macro, for example) can do 400-600 lpmm at the film plane. A good prime should be doing about 300, and a consumer zoom might be down around 100.
You are mistaken. It takes two sensels to resolve a line PAIR, so you need
There are some expensive Carl Zeiss fixfocal lenses that has resolution 160 lp/mm, and in your case it is not 3600*2400, it is 7,200*4,800 because it is not lines, it is line pairs, thus multiply milimeters by 2, thus in your case it is limit of 34 megapixels, and much more in my case.
Yes, it is 60 lp/mm for X# sensor, but it is not 60 for Bayer, it gotta be divided by about 2 or 3 times. Thus you've got 20-30 lp/mm everithing else - interpollation. don't fool yourself!
Actually, it's fairly common in CFA systems to use an antialiasing filter at the spacial frequency of the monochrome array, not the bayer cells. You then process the array into a luminence oomponent, and use some form of pixel adjacency algorithm to keep from having color banding due to under-filtering. So it really is closer to 60, for Bayer or for X3 (by the way, you cannot capitalize the "3" in X3, you get "X#").
Yeah, I got a chuckle the first time I read that. Something about the higher resolution of the sensor means the lens will provide all the low pass filtering that the system needs.
Based upon the comparison photos at the luminous-landscape.com website, the 11 MP 1Ds is not overkill at all. It makes very sharp images.
Please keep in mind the Bayer color filter and interpolation doesn't increase or reduce the orginal resolution of the image produced. They are used to "extract" the missing color information from the neighbor sensors. If your lp/mm resolution is color blind, then I don't think the image resolution is 1/2 or 1/3 of the sensor resolution in any case.
Heh, totally agree!For 11Mp (about 4200x2800 pixels) CCD resolution:
4200/36/1.5(eff.pixel size for Bayer) 2 (pairs) = 39 pairs lpmm
For 14Mp CCD (about 4500x3000 pixels) CCD resolution
4500/36/1.5(eff.pixel size for Bayer) 2 (pairs) = 42 pairs lpmm
It's resolution of a budget zooms
Big CCD size mean lower spacial frequency.
Well, 21 real megapixels, not really a toy, but if you use low ISO film and tripod with your Leica, then you'll get better results with drum scanner.
I do not know what planet you are living on but I have never seen a lens on a consumer camera do even 150 lppm
Combining is not a real test to go by. The only test is the CCD itsef. The CCD photosites and their relative distance determine resolution only as long as the lens exceeds this requirement. I have to say most lenses cannot cut it with the 6MP 1.5x sensors.
I suspect you are talking about 1.5x CCD sensors. The newer full size sensors have a lot less problems (in regards to sharpness) coping with existing lenses.
The filter is not needed for the new full size CCD or the Foveon.
A really good ortho micro film Agepe from Agfa can do 300 lppm but it made our Leica lenses look sick.
