Lada2107 I think you should not crop your photos to quadrangle, keep the original scale!
I debate this with myself all the time... Due to the quality of this camera, I have to crop and then compress a little bit to get under the 6mb (if I don't crop anything, I have to compress too much...). The original scale of ~16:10,5 is too wide for the previews (which is sadly what most people see...) so I crop the sides a little bit.
But thanks for the feedback, I'll try to keep it wider where possible for the next batch (and the ones after that).