http://imagej.273.s1.nabble.com/Strange-behaviour-of-brightness-contrast-settings-tp5014261p5014299.html
> On Sep 8, 2015, at 4:36 AM, Jochen Reichel <
[hidden email]> wrote:
>
> Hello,
>
> I want to report a strange behaviour of the brightness/contrast (B/C) settings when dealing with different image types (16-bit vs. RGB).
> I am currently working with imageJ 1.50c4 (daily build from just now).
>
> 1) If I work on a 16-bit image, everything works fine: I can adjust the B/C by moving the sliders in the dedicated B/C window (without pressing "Apply"!), click into the image, move around in the zoomed image, and adjust the B/C level differently again just for viewing purposes. The underlying intensity data of the pixels are never altered (only the representation on the monitor is) unless I click the "Apply" button. This is the behaviour I would expect.
>
> 2) If I work on a RGB image this is different. When I adjust the B/C-level (without pressing "Apply") and then just click into the image, the B/C settings are automatically applied! This is not what I want, because sometimes I need to move around in the zoomed image and adjust the B/C level differently for different areas of the sample (only for viewing purposes). This does not work because more and more information gets lost by this automatic application of the B/C level.
The latest ImageJ daily build (1.50c6) fixes several bugs in the B&C dialog related to the way it works with RGB images.