Thanks for the comments, feedback, and your testing, Paul!
That's certainly the basis behind Picture Styles, ALO, etc. But, are you suggesting that if I use the same NR settings in DPP with different cameras, I will get different amounts of NR? Certainly, the defaults vary by camera. So, for example, the defaults for ISO 3200 are:
Say I set DPP to luminance 8, chrominance 8 for all for cameras, are you suggesting those same numerical settings would be applied differently to the different images, based on the sensor/body? I'm not sure that this is the case (but knowing Canon, I wouldn't be surpirsed in the least).
Incidentally, I used the same NR settings in DPP for the tests, using the slightly more conservative S95 default values (i.e. I reduced the S100 NR settings a little bit from their defaults).
I agree, which is why I did not turn off NR for the testing. Although I normally use DxO for RAW conversions, in this case, using DPP for the 'tool' seemed best, since everyone will have access to it (and more importantly from a practical standpoint, at the present time no other software can process S100 .CR2 files!)
PaulRivers said:Meh said:I did notice your statement at the outset that said "converted in dpp using whatever the defaults were". So dpp applies different default conversion settings specific to each camera. Presumably, those defaults are chosen to optimize the final image, but to what standard?
Right, there is absolutely no doubt that dpp applies different settings based on the camera model.
The standard is...whatever Canon thinks looks the best, lol.
That's certainly the basis behind Picture Styles, ALO, etc. But, are you suggesting that if I use the same NR settings in DPP with different cameras, I will get different amounts of NR? Certainly, the defaults vary by camera. So, for example, the defaults for ISO 3200 are:
- 5DII - luminance 6, chrominance 6
- 7D - luminance 5, chrominance 12
- S95 - luminance 15, chrominance 16
- S100 - luminance 17, chrominance 17
Say I set DPP to luminance 8, chrominance 8 for all for cameras, are you suggesting those same numerical settings would be applied differently to the different images, based on the sensor/body? I'm not sure that this is the case (but knowing Canon, I wouldn't be surpirsed in the least).
Incidentally, I used the same NR settings in DPP for the tests, using the slightly more conservative S95 default values (i.e. I reduced the S100 NR settings a little bit from their defaults).
PaulRivers said:Meh said:Wouldn't it be a more apples-to-apples comparison to use the same conversion settings and possibly turn off any software NR when trying to compare the noise performance of one camera to another? The final image is what matters so it might be appropriate to apply the optimal NR algorithms and compare images particularly if for some reason the NR algorithms would work better on one file than the other but I'm not sure that's the case.
No, not in my opinion.
First, what most people are really interested in (including myself) is the actual results they will get out of the camera in my own day to day use. If Camera A is theoretically better than Camera B, but in reality Camera B produces better pics because of more advanced processing, and I usually use the default processing, who cares if Camera A is theoretically better?
In this case the only way to do a "fair" comparison is to use the exact same workflow and tools you would use...that is also a little impossible as different people use different tools, and new versions of those tools come out later, but I try to stick with what I will actually use.
I agree, which is why I did not turn off NR for the testing. Although I normally use DxO for RAW conversions, in this case, using DPP for the 'tool' seemed best, since everyone will have access to it (and more importantly from a practical standpoint, at the present time no other software can process S100 .CR2 files!)
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