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<blockquote data-quote="Horoscope Fish" data-source="post: 639985" data-attributes="member: 13090">I know exactly what you're talking about here and I too will typically pull-in the Black and White set-points on a Levels Adjustment layer on a shot. All that does though is redistribute the tonal values of your image. If you move your Black set-point from its default of &quot;0&quot; to &quot;5&quot;, you're telling Photoshop to map the tonal values in the image that register as &quot;5&quot; and lower, to a new value of &quot;0&quot;. if you pull the White-point to a level of say, 240 for instance, Photoshop maps all pixels at level 240 and higher to a new of level 255. This compresses the tonal range of the shot and increases Contrast which, typically looks good... Right up until it doesn't any more. Cropping the image after making these adjustments won't do anything to the tonal value of your image. Cropping removes pixels, obviously, but the White-point and Black-point are still where you set them (either by default or at the new settings you chose by applying the Levels Adjustment layer) and those values will not change unless set new White/Black points, or adjust the Contrast or do something else that directly affects tonal values. So the answer to your question, &quot;Do you re-adjust levels so the cropped shot covers all black to all white?&quot; is, no... You would not need to because the Tonal range you set when you moved the Black/White Point sliders was not modified by cropping.That's MY understanding but I'm certainly willing to listen if someone wants to tell me I'm all wet!</blockquote>

[QUOTE="Horoscope Fish, post: 639985, member: 13090"] I know exactly what you're talking about here and I too will typically pull-in the Black and White set-points on a Levels Adjustment layer on a shot. All that does though is redistribute the tonal values of your image. If you move your Black set-point from its default of "0" to "5", you're telling Photoshop to map the tonal values in the image that register as "5" and lower, to a new value of "0". if you pull the White-point to a level of say, 240 for instance, Photoshop maps all pixels at level 240 and higher to a new of level 255. This compresses the tonal range of the shot and increases Contrast which, typically looks good... Right up until it doesn't any more. Cropping the image after making these adjustments won't do anything to the tonal value of your image. Cropping removes pixels, obviously, but the White-point and Black-point are still where you set them (either by default or at the new settings you chose by applying the Levels Adjustment layer) and those values will not change unless set new White/Black points, or adjust the Contrast or do something else that directly affects tonal values. So the answer to your question, "Do you re-adjust levels so the cropped shot covers all black to all white?" is, no... You would not need to because the Tonal range you set when you moved the Black/White Point sliders was not modified by cropping. That's MY understanding but I'm certainly willing to listen if someone wants to tell me I'm all wet! [/QUOTE]

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