On Tuesday, March 11, 2003, at 08:17 AM, Paul & Aoibheann Hopkins wrote:
I am supplying images on CD for a magazine in CMYK. I have been told that it
is coated stock & that total ink is 340%. Previously for other magazines, in
the absence of better information I have used Euroscale Coated 350% & this
has been fine. My question is how can I see which are the darkest points on
my image.
Make a "Threshold" adjustment layer and move the slider all the way to the left. The black areas that you see should be the darkest areas in the image. Use the color sampler tool to place a sample point so you don't loose track of the areas. Throw away the Threshold layer and make any necessary adjustments
Do I have to hunt around with the eye dropper & add up the numbers. ?
See above - plus you can change the info palette options to show total ink as your 2nd readout.
Also, If some areas are totalling 350%, can I just tweak the output slider in Levels to reduce it to 340% ?
That would probably work fine for such a small move though I might be more inclined to use curves & move the black point in the CMY channels only until you hit the desired TIL (might help to preserve the "snap"in the black).
best regards,
Lee Varis
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