On this page, we compile a list of questions and ansnwers relating to creative photography. Each has been asked by a reader and answered by another. We synthetise the answers and group them by topic, hoping this will become a useful resource for the community. If you find incomplete answers that you can improve upon, please drop us a line and add your contribution 🙂
Sadly, the answer appears to be: "because the printer makers can". When you upload a paper profile to your computer, that lets you estimate the final look of the image before printing, via soft-proofing. But, on the printer settings, you often have to select a paper that's from the same brand as the printer itself. If you're using a third-party paper, you can usually find in the box documentation, or in the paper manufacturer's website, the name of the best printer-brand paper to select for your specific 3rd-party paper. For example, on a Canon printer, Hahnemühle might instruct you to select Canon Pro Luster for its Baryta Photo Rag.
You can also create a custom media type for your paper, which we will deal with in a separate question.