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Adjustment LAYERS are non-destructive in Photoshop. You can delete or disable them at any time and get back to where you started w/o any losses. Adjustment layers only add data to the file; as shown by the file size (document size can be selected in lower left of the UI). The problem with 8bit vs 16bit is the accuracy of the math (digital edits are all ...


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A few years late, but I think it contributes. The Curve Tool can directly do anything that the Levels tool can do. And a bit more too, but the curly curved "curve" part is simply one option, but the Curve tool has several other features which directly match Levels. The Curve Tool is perhaps more graphical than Levels, but both show the histogram background. ...


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I just found this very old question & thought it worth adding a modern 'instant fix-it' method. Apps such as Luminar can now do a huge amount to rescue bland or hazy images. This was a couple of minutes on the original tiny jpg I first masked out the mountain using Photoshop's Select & Mask feature, so the colours could be handled separately and ...


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There can be less color in the result, yes. In a pixel, each color channel can take only one of 256 values (2⁸). Each adjustment transforms these 256 values to some other 256 values. But there is a constraint: for any pair of two values of input, the highest value of the two must remain the highest (otherwise you get an effect called solarization). If you ...


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It is a processing/software artifact and the same as what is encountered when tone mapping HDR images... that's basically what you are doing; re-mapping the tones, only w/in a single image. Also check other contrast type settings; sharpening, clarity, etc. Those types of settings try to preserve/increase the perception of details by adding localized ...


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You need to feather the selection/path a few pixels... select menu>feather


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I assume you're talking about forensic/evidence scales. AFAIK, the circles are more to help align the camera in order to prevent oblique angles. Generally, editing such images is not a good idea as correcting one portion could cause additional distortion elsewhere. But to correct such an image you would overlay a circle on a new layer and transform the ...


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