Thank-you so much for your input, @DavidFrazer, @buddingphotographer, and @JamesStaddon. It’s great to refresh my mind on PPI and add LPI to the mix! Unfortunately my brain isn’t remembering the difference/connection between DPI and PPI? Is one in-camera and the other for printing?:)
David Fraser’s comment on the 7D caught my attention – as I do have a Canon 7D! 🙂 (Not sure how many pixels it has and I’m away from my camera manual at the moment!) If I shoot an image at full resolution with that camera, will my only option be taking multiple pictures and ‘stitching’ them together, if I want a minimum viewing distance of say, two feet?