05-14-2012, 07:43 PM
[quote name='Frank' timestamp='1336967493' post='18184']
I thought about it too naively. I thought that, placing a glass (or even plastic) in front of a lens always causes some dropping in the lens resolution, and the amount of resolution dropping depends on the quality of the added glass. (I know that for high-quality modern UV filters the affect on lens resolution is tiny, but I don't know about other filters like GND filters <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' /> ) After reading your response now I think that this influence is much smaller than the resolution increase caused by 1) limiting the waveband of photons that reach the sensor; and 2) removing the colour filters from the sensor.
Good to learn about this. It is intersting to know that for films, usually BW films have a much larger DR capacity than colour films; while for digital sensors, coloure sensors tend to have a larger DR capacity than BW sensors <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />
Thanks again,
Frank
[/quote]
Not so much more DR, but more leeway with regard to over- and/or underexposing, entirely caused by the fact that the camera separates the light into 3 channels effectively. I would expect a monochrome sensor with sensels the same size as a clour sensor to have the same DR, but less exposure leeway.
Kind regards, Wim
I thought about it too naively. I thought that, placing a glass (or even plastic) in front of a lens always causes some dropping in the lens resolution, and the amount of resolution dropping depends on the quality of the added glass. (I know that for high-quality modern UV filters the affect on lens resolution is tiny, but I don't know about other filters like GND filters <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' /> ) After reading your response now I think that this influence is much smaller than the resolution increase caused by 1) limiting the waveband of photons that reach the sensor; and 2) removing the colour filters from the sensor.Good to learn about this. It is intersting to know that for films, usually BW films have a much larger DR capacity than colour films; while for digital sensors, coloure sensors tend to have a larger DR capacity than BW sensors <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' /> Thanks again,
Frank
[/quote]
Not so much more DR, but more leeway with regard to over- and/or underexposing, entirely caused by the fact that the camera separates the light into 3 channels effectively. I would expect a monochrome sensor with sensels the same size as a clour sensor to have the same DR, but less exposure leeway.
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 ....