08-31-2011, 11:10 AM
[quote name='thxbb12' timestamp='1314733060' post='11175']
While downsizing a higher resolution image to a lower one improves noise performance, DR should be independent of resolution.
To the OP: DXOMARK only analyzes RAW files, not JPEGS.
[/quote]
Yes, and not all Raw files are created equal <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />. In short, short of measuring the actual output of a sensor, DxOMark only tells you within a camera brand with more or less the same processing algorithms before saving a Raw file, which one is better for a particular aspect.
Although DxO uses their "benchmark" to compare cameras, one can't really, because not all important parameters are equal.
And DR certainly is not independent of resolution, because resolution is not some independent block wave type function, it is a sinus wave, limited by constraints imposed by physics, optics (lenses), aperture, sensor resolution, sensor size, sensel size, sensor configuration, and A/D to name but a few.
HTH, kind regards, Wim
While downsizing a higher resolution image to a lower one improves noise performance, DR should be independent of resolution.
To the OP: DXOMARK only analyzes RAW files, not JPEGS.
[/quote]
Yes, and not all Raw files are created equal <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />. In short, short of measuring the actual output of a sensor, DxOMark only tells you within a camera brand with more or less the same processing algorithms before saving a Raw file, which one is better for a particular aspect.Although DxO uses their "benchmark" to compare cameras, one can't really, because not all important parameters are equal.
And DR certainly is not independent of resolution, because resolution is not some independent block wave type function, it is a sinus wave, limited by constraints imposed by physics, optics (lenses), aperture, sensor resolution, sensor size, sensel size, sensor configuration, and A/D to name but a few.
HTH, 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 ....