CDS-5D (Cooled 5D mark III) Dark Frame Compared
In order to distinguish the noise level of each shots more easily we stretched the tone levels in Photoshop program. The default value of highlight Levels is 255 and we stretched this to 100 and 30Levels.
1. Original Image
2. Levels stretched, 255 to 100
3.Levels stretched, 255 to 30