02-19-2012, 12:22 AM
[quote name='youpii' timestamp='1329603427' post='15899']
When looking at PZ Canon APS-C 8M vs 15M, there is a linear resolution improvement for most lenses, even cheap ones, at usual apertures.
Shouldn't it be the same for FF lenses moving from 24M to 36M?
[/quote]
What do you mean by linear? Square root of the factor? It doesn't work entirely that way, for photographic images anyway, because system resolution, the resolution ending up in the image, is dependent on the general resolution formula. Based on my calculations, keeping everythign else the same, at apertures where the lens is diffraction limited, resolution should be between 10% and 17 % higher, depending on aperture, and maybe a few percent more for the D800.
Effectively not really linear, IOW, even if it is for the sensor height (or width).
Kind regards, Wim
When looking at PZ Canon APS-C 8M vs 15M, there is a linear resolution improvement for most lenses, even cheap ones, at usual apertures.
Shouldn't it be the same for FF lenses moving from 24M to 36M?
[/quote]
What do you mean by linear? Square root of the factor? It doesn't work entirely that way, for photographic images anyway, because system resolution, the resolution ending up in the image, is dependent on the general resolution formula. Based on my calculations, keeping everythign else the same, at apertures where the lens is diffraction limited, resolution should be between 10% and 17 % higher, depending on aperture, and maybe a few percent more for the D800.
Effectively not really linear, IOW, even if it is for the sensor height (or width).
Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....