Is any processing necessary on my RAW photos to prepare them for print (not Kindle) publication through KDP?

Besides any processing, the KDP requirements seem to be at least 300 DPI, highest resolution possible, not to compress the images, and no larger than 650 MB in size. But which file format is best?

I have taken some RAW photos of some acrylic paintings to self-publish a tribute book. First time with a camera, but the project is important to me.

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    \$\begingroup\$ I’m afraid this question my be so broad as to be unanswerable. \$\endgroup\$
    – Eric S
    Commented May 26, 2023 at 3:02
  • \$\begingroup\$ This question is likely to be answered with opinions rather than facts and citations. It should be updated so it will lead to fact-based answers. \$\endgroup\$ Commented May 26, 2023 at 4:26
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    \$\begingroup\$ 300 DPI alone is meaning less. What are the print size of the pictures? The combination of the two tells you what should be the minimum size in pixels, which is the only thing that counts. \$\endgroup\$
    – xenoid
    Commented May 26, 2023 at 7:50
  • \$\begingroup\$ The trim size of the book will be 8.25" x 11" (20.96 x 27.94 cm). I expect one to four photos per page, Some of the paintings are 5" x 5" while most are 30" x 40" and everything in between. \$\endgroup\$
    – E2R0NS
    Commented May 26, 2023 at 13:34
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    \$\begingroup\$ @MichaelC I zoomed in as close as I could for each photo, but the camera was always 42" from the painting. Margins. Portrait sized book. Most of the paintings are portrait shaped, but not all. \$\endgroup\$
    – E2R0NS
    Commented May 26, 2023 at 23:46


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