Kostas, It can stay as grayscale … or changed to RGB … the book will be RGB regardless. I seem to remember that this was the case … actually the printer will print CMYK I believe but that is up to them. Not for us to worry about. Andy > On Mar 27, 2018, at 12:12 PM, Kostas Papakotas <clenchedteethphotography@xxxxxxxx> wrote: > > I wonder. > A B&W image what profile should it have? A greyscale, or should it be converted to sRGB? >
