"Capture One has the following restrictions on reading TIFFs:
- must be RGB (no CYMK, Lab, or Monochrome)
- cannot be larger than a certain size of mb
- must be saved in "compatibility" mode (which is usually the default option in PS)
I'm sorry I don't remember what that file size limit is off the top of my head and I don't have time to look it up, but I think it is either 1gb or 2gb.
Another reason might be issues with file permissions (if C1 can't write to the folder to create it's cache/settings sidecars things can get wonky - though usually it will show you the thumbnail with an eyeball icon - not nothing)."
I never thought of file sizes being an issue, so good to know, but they are between 600-800MB depending on cropping, but all less than 1 GB. This is the designated C1 output file for the project so C1 did write to it, and processed RGB; color space IQ180-flash; and the other parameters should be covered but I'll check. Thaks for your reply.