07-18-2010, 02:16 PM
[quote name='Brightcolours' date='18 July 2010 - 04:07 PM' timestamp='1279462047' post='1094']
But that is not what I am referring to, long exposure NR is with a black frame. And Nikon has the feature too (which you can switch on and off). The type of NR you can see Nikon apply is NOT that kind of NR, and it switches on at 3secs for some models to 0.5 sec or so on other models. You can find it by careful RAW data analysis.
Whether this is connected to the bump you see in dynamic range in DXOmark data for the D3s at ISO 25600 I do not know. The graphs of DXOmark do not show the used exposure times.
Anyway: My point is that you can see (extra?) NR kick in with Nikon models when they pass a certain exposure time, and this is NOT connected with "long exposure" black frame subtraction NR.
[/quote]
Ok, thanks for the additional explanation!
I do think it is connected to the, IMO, artificial DR bump that DxOmark reports <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.
Kind regards, Wim
But that is not what I am referring to, long exposure NR is with a black frame. And Nikon has the feature too (which you can switch on and off). The type of NR you can see Nikon apply is NOT that kind of NR, and it switches on at 3secs for some models to 0.5 sec or so on other models. You can find it by careful RAW data analysis.
Whether this is connected to the bump you see in dynamic range in DXOmark data for the D3s at ISO 25600 I do not know. The graphs of DXOmark do not show the used exposure times.
Anyway: My point is that you can see (extra?) NR kick in with Nikon models when they pass a certain exposure time, and this is NOT connected with "long exposure" black frame subtraction NR.
[/quote]
Ok, thanks for the additional explanation!
I do think it is connected to the, IMO, artificial DR bump that DxOmark reports <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.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 ....