02-26-2012, 12:21 AM
[quote name='Brightcolours' timestamp='1330208978' post='16170']
More likely that MTF-9 resolutions of the absolute best lenses will be around 300 lp/mm.
And those then will be diffraction limited at f5.6. So basically one would only see it around f4, as wider open possibly would have a weaker performance anyway.
If we take that 300 lp/mm at MFT-9 as guide, 60mp sensors would be the limit till one would not see resolution gains.
[/quote]
Zeiss actually claimed 400-450 lp/mm at MTF-9 quite a few years ago for some of their lenses.
And one will see resolution increases at any higher MPs, basically because system resolution can never be higher than the inverse of the sum of lens resolution and sensor resolution. 60 MP is only approximately 131 lp/mm (on a FF sensor); even at 300 lp/mm for a lens at its best, that would put system resolution at 91 lp/mm. With a sensor at 300 lp/mm, i.e., 311 MP, that would generate a potential of 150 lp/mm system resolution. Diminishing returns, yes, but one would still see resolution gains. Provided of course such a sensor could still handle the DR required for 9% contrast.
Kind regards, Wim
More likely that MTF-9 resolutions of the absolute best lenses will be around 300 lp/mm.
And those then will be diffraction limited at f5.6. So basically one would only see it around f4, as wider open possibly would have a weaker performance anyway.
If we take that 300 lp/mm at MFT-9 as guide, 60mp sensors would be the limit till one would not see resolution gains.
[/quote]
Zeiss actually claimed 400-450 lp/mm at MTF-9 quite a few years ago for some of their lenses.
And one will see resolution increases at any higher MPs, basically because system resolution can never be higher than the inverse of the sum of lens resolution and sensor resolution. 60 MP is only approximately 131 lp/mm (on a FF sensor); even at 300 lp/mm for a lens at its best, that would put system resolution at 91 lp/mm. With a sensor at 300 lp/mm, i.e., 311 MP, that would generate a potential of 150 lp/mm system resolution. Diminishing returns, yes, but one would still see resolution gains. Provided of course such a sensor could still handle the DR required for 9% contrast.
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 ....
