HP 5400c Series - Manual (Page 55)

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Viewing RGB values and pixels
You can view the RGB values and pixel color for any spot in a color or
grayscale image using the RGB meter.
To view the RGB values and pixel color for slides, negatives, or other
transparent items, use
"Viewing RGB values and pixel color" on
page 83 .
To view the RGB values and pixels
1 On the Advanced menu, click Adjust Exposure.
2 Click
or .
3 Move the pointer over the image. The RGB values and pixel color
appear in the RGB meter.
Note: Do not click while the eyedropper pointer is over the
image unless you want to change the setting for
highlight or shadow.
4 Click the same eyedropper button again. The RGB meter dims and
the cursor returns to normal.
RGB
values
Pixel
color