Ptheobald1
Member
Hi Group,
I work in Prepress for a packaging printer and one of our press divisions is requesting pretty significant GCR conversion be applied to their client supplied CMYK images. I have been experimenting with using Edit/Convert to Profile/GCR/Heavy with an 85% Black Ink Limit, 300 Total Ink Amount using Photoshop CS5.
This is introducing some unwanted color shifts, especially in the magenta and yellow channels. I have also experimented with doing a LAB mode conversion then going to GCR/CMYK but it does not seem to make much difference....I'm pretty sure Photoshop goes to LAB as a conversion color space when using the Convert To Profile move.
Has anyone come up with a better way to to apply GCR to supplied CMYK without having to go back and do adjustment curves to get the appearance close to the original supplied images? The images are mostly food products, cookies, snacks, chips etc...
Thanks in advance for any suggestions,
Pat
I work in Prepress for a packaging printer and one of our press divisions is requesting pretty significant GCR conversion be applied to their client supplied CMYK images. I have been experimenting with using Edit/Convert to Profile/GCR/Heavy with an 85% Black Ink Limit, 300 Total Ink Amount using Photoshop CS5.
This is introducing some unwanted color shifts, especially in the magenta and yellow channels. I have also experimented with doing a LAB mode conversion then going to GCR/CMYK but it does not seem to make much difference....I'm pretty sure Photoshop goes to LAB as a conversion color space when using the Convert To Profile move.
Has anyone come up with a better way to to apply GCR to supplied CMYK without having to go back and do adjustment curves to get the appearance close to the original supplied images? The images are mostly food products, cookies, snacks, chips etc...
Thanks in advance for any suggestions,
Pat