Mark Sykes <[EMAIL PROTECTED]> writes
Dear MarkHi allI have never attempted to create a colour in PS which conforms to a Pantone reference before. However a client decided that a shot I had just completed on black might look nice on their corporate blue (typical!) for which they gave a reference of Pantone 281C. They described this as a very dark 'midnight' blue and that is what it looks like on the Pantone process colour swatch. However creating a file with this as the background colour using the Pantone reference of C100.0 M72.0 Y00.0 K38.0 gives something akin to a mid sky blue. What am I missing?
Here courtesy of my data base and Dan Margulis who I think provided the following method, sorry if the formatting is to cock in the pasting.
USING SETUPS TO MATCH A PMS COLOR
If you have to match a spot color using CMYK inks, don't throw up your
hands and use the CMYK values that Pantone supplies. Those formulas don't
account for the impact of the screening process, meaning they usually don't
give enough of the dominating colors. And they use the maximum possible
amount of black ink, which is an invitation to a dot gain disaster.
A much better way is to take advantage of Photoshop's ability to
recompute values using the current CMYK Setup-if you've got them set to
reasonable values. In the following example, we'll try for PMS 180, a deep
red.
1. Open the Photoshop Custom Colors Palette and select PMS 180. Note the
suggested CMYK value: 0C76M83Y11K.
2. Click "Picker." Forget the repetition of the CMYK value, and write down
the LAB one above it: 47L55A33B.
3. Change that LAB value to something completely random.
4. Retype the known value of 47L55A33B. This forces Photoshop to re-compute the CMYK equivalent. Write it down: 18C90M83Y2K. Use that wherever the PMS color is specified. PMS 180, if you don't have a swatchbook handy, is a rich, deep off-red, slightly to the rosy side of brick red (as opposed to the orange side). At left, the official version, at right the one computed by Photoshop. Dot gain is fully taken into account here: if CMYK Setup had been more typical of a newspaper than a magazine, the cyan component would have been reduced.
Cheers
Richard
--
For quality scans that are really right...No Messing. Satisfaction Guaranteed.
New PDF on request. +44 (0)1873 890670 [EMAIL PROTECTED] www.rkdi.co.uk
===============================================================
GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
