09-25-2011, 11:04 AM
[quote name='Klaus' timestamp='1316938819' post='11826']
What wavelength did you assume ? Looks like blue to me. The situation is very different when taking red as a reference.
[/quote]
512 nanometers, which is the generally accepted and used wavelenght for diffraction determination for general purpose photographic lenses. All this at the Rayleigh criterions of 9 % contrast, which according to the definition is the point where lenses can still make out a difference.
Kind regards, Wim
What wavelength did you assume ? Looks like blue to me. The situation is very different when taking red as a reference.
[/quote]
512 nanometers, which is the generally accepted and used wavelenght for diffraction determination for general purpose photographic lenses. All this at the Rayleigh criterions of 9 % contrast, which according to the definition is the point where lenses can still make out a difference.
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 ....