Question: Calibrating photos for printing
I would like to prepare a photo book through iPhoto (a 'project')--my first. How do I calibrate the photographs so as to minimize the differences that exist between a photo displayed on screen and the same to be shown printed (e.g. photos do not appear darker or less sharp). I use Lightroom for post processing.
Also, what would be the best format to submit a photograph for printing? Thanks.
MacBook Pro, macOS Sierra (10.12.6)