Speaking to Shaun I realised that trying to get 42 images onto 3 A3 sheets would be a bigger job than planned. It would take a long time to get each all of the images layed out plus they wouldn’t be easy for the viewers to see.
My final presentation will consume of 10 A3 sheets with 2 (7x5inch) images on each one. I will then mount them on mountboard.
To do this I will use Adobe In Design.