: How To Estimate Brightness-Contrast Value of Gray Figure? Situation: I have gray figures, figure A and figure B, where figure B is wider than figure A; Figure B is very light although from

Situation: I have gray figures, figure A and figure B, where figure B is wider than figure A; Figure B is very light although from the same situation but with little more perspective/view/data in it; I cannot estimate what is the point of figure B in the brightness-contrast plane
Characteristic: my pictures become very light when I take wide pictures; I do not understand what can cause it

I have Gimp/ImageMagick/... in my system. I would like to have both figures with the same value in the brightness-contrast plane.

System: Debian 8.5 64 bit, Ubuntu 16.04 64 bit
Linux kernel: 4.6 of backports

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@Lee3735518

I don't think you can see this in terms of brightness/contrast, what you can do is

using Levels, make sure that the histograms of both images have the same span (one may not have blacks or whites)
find places in one image that are roughly on grays 25%-50%-75%
find equivalent places in the other image, and use Curves to adjust their values (a bit like what is done here)

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: How To Estimate Brightness-Contrast Value of Gray Figure? Situation: I have gray figures, figure A and figure B, where figure B is wider than figure A; Figure B is very light although from

More posts by @Deb5748823

: Gimp: Change a signature color from black to blue, preserving the tones I have a scanned signature written in black pen. I have removed the white paper parts of the image using alpha transparency.

: Is this copyright infringement? There is a business that is in my area. She uses professional photography that is found online, uses an app to put her logos and advertising all over it, and

: InDesign CS3: Making the top layer more prominent? OK, I'm reasonably familiar with setting vertical type in Illustrator...but how does one adjust the letters left and right to properly align

: Inconsistent colors when exporting from Illustrator I made an image with white text on a black background in Adobe Illustrator and everything looked good. However, when I wanted to save as

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