Canyon Conumdrum
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Histogram computation is a relatively slow process. By default, Curvemeister computes the histogram based only on the preview image. If you enable the "Use Exact Values" you may get a histogram that looks more like Photoshop's.
Photoshap also uses its own shortcut to save time computing the histogram. Later versions of Photoshop have an uncached refresh button that can change the histogram appearance slightly.
Photoshap also uses its own shortcut to save time computing the histogram. Later versions of Photoshop have an uncached refresh button that can change the histogram appearance slightly.
Here's my take on Greg's very interesting canyon image.
This took several passes, Lab first to set the thresholds, then RGB to neutralize some of the various color casts, another Lab to bump saturation, and a final RGB to tune down the green cast in the nearby stone formations, particularly the one on the far left.
This took several passes, Lab first to set the thresholds, then RGB to neutralize some of the various color casts, another Lab to bump saturation, and a final RGB to tune down the green cast in the nearby stone formations, particularly the one on the far left.
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a final RGB to tune down the green cast in the nearby stone formations, particularly the one on the far left.
Mike,
it looks very nice.
specially the red brown color of the canyon in the background.
I could not get this in LAB-mode. Mine is to mangenta.
But I have thought, it was the intention to to do the picture all in LAB mode.
On mine screen looks the particularly stone the one on the far left still green.
Frits
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After that I have compared the foreground red-browncolor with that in the background, by setting marks on it.
In Lab-mode these values are close togehter, so I jumped to RGB mode.
I locked the whole pin-grid on each R G and B and around the upper mark point, the point of the red-brown rock in the background, I losen some gridpoint.
then working that the rock goes more red-color. the same color as the fore-ground.
I did not succeeded 100 %. that tells me the hue-clock.
I see now the sky is too green.
I am going on!
In Lab-mode these values are close togehter, so I jumped to RGB mode.
I locked the whole pin-grid on each R G and B and around the upper mark point, the point of the red-brown rock in the background, I losen some gridpoint.
then working that the rock goes more red-color. the same color as the fore-ground.
I did not succeeded 100 %. that tells me the hue-clock.
I see now the sky is too green.
I am going on!
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