Ive done a couple of Blurb books before using the old HP Indigo profile for softproofing. There is now an expanded range of papers and a new profile Blurb.icc. Why arent there profiles for each paper type, like on my inkjet at home, or this unecessary for Blurb’s printing process?
Actually it’s essential and as a result many will see quite visible and substantial differences in tone and color. There appears to be a significant gain in red saturation, as well as a slight shift for yellows toward red (I’ve seen this in two books, one of mine and one by a colleague). This is in a page for page comparison of books on the original luster and the proline pearl. Same books.
There is a tonal difference as well (noted in other threads), with some of the subtle dark shadow values starting to block. Contrast is stronger which is fine, as long as you are aware in soft proofing and can adjust the files appropriately.
This was not the best way to introduce new materials – ie ignore basic color management principles. and have the users figure out the differences for themselves,
Another profile is needed. This should have been thought of and done before making the new papers available.