Submitted by Roger Breton on
Forums:
In this experiment, I took at picture of an old photographic Kodak Gray Scale target with my Nikon D810.
I metered the exposure manually on patch M, which is closest to an 18% reflectance middle gray.
Here is RawDigger main window (with the cursor sitting on the M patch) :
https://1drv.ms/u/s!AkD78CVR1NBqlsJIwpfjVPljvOJC3Q?e=EYUrs4
And here is the Histogram window from a Selection of just the gray scale :
https://1drv.ms/b/s!AkD78CVR1NBqlsJJC3VNgAJirCzJAw?e=lD8dOg
As can be seen, in this case, RawDigger did not use the Red channel value (about 794) to use for EV0.
On the definition of EVO - Part 3
Submitted by Roger Breton on
I noticed that, on the Histogram, under the Show EV Grid and Auto checkboxes, there is an text box showing "EV0: 2048".
A quick look down the graph, shows that, indeed, EV0 is pegged at "2048".
In my previous example ("Part 2"), EV0 was pegged at "512".
I guess I have to read up on this important feature...
www.graxx.ca
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