Imatest
Stepchart is a tool used to measure the tonal response, noise, and dynamic range of a camera system using a Stouffer stepwedge. On finally obtaining my D800e, I performed an analysis on the camera. As expected, the dynamic range is very good and the camera was able to capture 39 of the 41 steps of the wedge. This is much better than the results I previously obtained with my D3.
The first step is to expose to the right so as to capture the full dynamic range of the camera. Shown below is the best exposure analyzed by Rawdigger. The exposure at 1/13 sec f/8 places step 1 slightly less than 0.3 EV from clipping, but 1/10 sec clips the green channels. The full DR was not quite captured because of the limitations imposed by the granularity of the shutter speed.
The most important results are shown:
The lower steps are completely black on the screen as shown:
Rendering with ACR 7.1 PV2012 with +5 EV exposure and increasing the blacks to maximum does show the lower steps. Pattern noise is minimal, but I do see slight banding. Altogether, an impressive performance.
Regards,
Bill