Thanks. I read the article, but I don't completely understand what is happening. This is a magazine with a document blend space of CMYK. All the color swatches are CMYK, but I leave photos as JPG and let the process convert them to CMYK automatically - I don't know if that happens at the point of PDF export or by the software at the printing company, but I've always been satisfied with the way the colors look. For the "News" spread, I use Irfanview (or occasionally Photoshop if I need more powerful editing) to make a grayscale version of the photos. In the article you linked, it says this: InDesign, on the other hand, will let you combine page objects and artwork with grayscale, CMYK, RGB, or LAB on the same page; it allows both CMYK and RGB profile assignments to handle the management and display of CMYK and RGB colors on the same page. Grayscale artwork and images default to using the CMYK profile (the black plate). Okay, that last sentence is obviously related to my problem, since the photos that are fading are grayscale. And upon closer inspection, I learned that although Irfanview creates a truly grayscale-type JPG, Photoshop does not (it just makes the R/G/B values the same for all pixels, I guess). And yup, the two photos on the spread that were converted in Photoshop (2nd and 3rd of the three people in the lower left) don't fade. Later in the article, it says: But as soon as you introduce ANY transparency into the document (for example, using an effect like a drop shadow, or placing an image with a transparent background), InDesign needs to convert everything in the document to EITHER RGB or CMYK. Hmm... This is where I'm confused. A few questions: The document already had transparency on other pages long before I tried doing this - gradient feathers, shadows on other text, etc. So if this is at the document level (that's what the sentence says), whatever was going to happen to the document should have already happened. Is the article wrong about it being at the document level and it's really at the spread level? How can I tell whether a spread has transparency somewhere on it? Is there some info/status that will tell me? I have other pages in the document that have a grayscale JPG, but adding an effect does not cause a change to them, so I assume there is already some transparency on the spread, so when I placed the grayscale image, I don't realize it is lighter than it otherwise would be. When I add transparency to a spread and InDesign has to then consolidate everything to a single blend space, why is it converting the CMYK elements to RGB, instead of the RGB elements to CMYK? As I said, my document's blend space is set to CMYK and all my swatches are CMYK. Are things colored with swatches (text, strokes, fills) also being converted to RGB on any spread that has transparency? I don't see anything like that visually changing, but it might be subtle. When I export the print-ready PDF, I'm pretty sure the swatches end up however they were in the document, because the printshop will reject it if there are non-CMYK swatches. (Occasionally an advertiser gives me something with an RGB spot color, and if I don't notice, the printshop kicks it back.)
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