08-06-2010, 11:30 PM
Hi Mike,
Thank you for the additional explanation. I am not too familiar wit the Kodak slr/c and /n models. I do know it was the thing to strive for, for as long as it lasted anyway <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.[quote name='mike' timestamp='1281113344' post='1553']
Yes, canon's have a Long Exposure Noise Reduction mode. This is a pure single dark channel subtraction (maybe some other built in NR too?).[/quote]I thought it does both chroma and luminance noise, but I am not 100 % sure. I never had the need to use it yet.
I find noise on the 5D II only starts getting in the way around 3200 to 6400 iso and funnily enough especially when overexposign slightly at 3200 iso - at 6400 iso you lose details. With the 1D Mk III and some dedicated noise reduction software and profiles, even the images at 6400 iso become squeaky clean, but even there I never needed it so far.
I guess it depends on the application this is used for or required for. Certainly very interesting to know.
Kind regards, Wim
Thank you for the additional explanation. I am not too familiar wit the Kodak slr/c and /n models. I do know it was the thing to strive for, for as long as it lasted anyway <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.[quote name='mike' timestamp='1281113344' post='1553']Yes, canon's have a Long Exposure Noise Reduction mode. This is a pure single dark channel subtraction (maybe some other built in NR too?).[/quote]I thought it does both chroma and luminance noise, but I am not 100 % sure. I never had the need to use it yet.
Quote: This is is only part of what I'm referring to. Sorry for the confusion. Besides this, in the slr/c (which is the old FF kodak), there's a special mode you can go into for long exposures at low iso's. When in this mode if you take a picture of moving lights if you look close you can actually see the break in the light where the new frame is. After the shot is done, the camera grinds away for a few while processing the image and saving it.
The key difference is between this and my canons is with the slr/c (or their nikon variant slr/n) the results are actually the cleanest, highest resolution images the camera can put out. This is not true for the canons. The only problem with the slr/c is the range of use was very limited. That's why I wonder why someone hasn't copied this and brought it up to date.
I find noise on the 5D II only starts getting in the way around 3200 to 6400 iso and funnily enough especially when overexposign slightly at 3200 iso - at 6400 iso you lose details. With the 1D Mk III and some dedicated noise reduction software and profiles, even the images at 6400 iso become squeaky clean, but even there I never needed it so far.
I guess it depends on the application this is used for or required for. Certainly very interesting to know.
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 ....