Have you got any results for the 5D using similar methodology?
nope, only 350D and Fuji S3 Pro. Maybe I have some 5D RAW file in my HD but I don't remember now where it could be. I guess 5D must be about 8.5 f-stops of usable DR or so.
We are missing a few key things here.
First and most obvious, capture and processing method which would have a most obvious influence mainly on the noise floor but also in the highlights.
Secondly, dynamic range optimisation which would entail knowning the exposure given and its result in sensor photon-well saturation for each RGB channel.
All above can result in variations of +- 2EV in such subjective measurements of the dynamic range.
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Yes you are right:
Capture method: click the shutter (I guess).
Camera: NIKON D3
ISO speed: 200
Shutter: 1/40.0 sec
Aperture: f/2.8
Focal length: 28.0 mm
Processing method: I developed the RAW file using DCRAW and camera's WB. The highlights in the upper part of the window were blown. I used mode -H 2 which guarantees not to blow any extra information that was not already blown (multipliers <=1).
The resulting histogram was linearly corrected up so the entire histogram was shifted 1/4 f-stop up to fill the empty gap on the right. This reallocated all information in the EV zones by 1/4 up providing 1/4 less DR than if we had not adjusted the histogram to the right.
I think this is the only argueable step taken and I am not 100% happy with the solution, but I think it was the most neutral decision since leaving the gap empty would mean not using the entire DR in the highlights.
This was the resulting histogram with -H 1 (pure <=1 WB multipliers, magenta highlights): no gap in the right, but usual magenta highlights:
This was the resulting histogram with -H 2 (pure <=1 WB multipliers, neutral gray highlights):
[span style=\'font-size:8pt;line-height:100%\']and after 1/4 f-stop up this is the histogram distribution finally used for the EV zones:[/span]
No noise reduction, unsharp mask, contrast or any other kind of processing applied.
Panopeeper here you are: [a href=\"http://www.guillermoluijk.com/download/nikond3_drtest.nef]nikond3_drtest.nef[/url] (24 MB)
DCRAW set black point to 0, so maybe this is in the group of cameras where black offset substraction has already been performed over the RAW data.