I'm compiling my photos into a single Photoshop document which I will then output as JPEG to be sent to an external printer to be printed as a Photobook. Does the resolution settings make a lot of difference when creating the photoshop document? (In the File -> New).
I realised that I forgot to set it to 300 pixels/inch for some of them.. is it possible to change the settings after the document has been created? I do not want to re-do them again!