Hi,

I have recently been toying with composite photo construction, which, for me, means working in Gimp with many layers. This means I can quickly consume memory. I have 12 GB installed and not easily improved since it is a laptop. My camera is an 80D, so 24 megapixels image size.

I was wondering, should I always work at maximum resolution. I know/think ideally I should, but practically speaking, for an image I might present in a club competition, or print out for hanging on the wall, would a smaller size be sufficient. For example, could I work at half res, and still have sufficient resolution?