Sony Cyber-shot DSC-M2 vs Canon EOS 5D digital cameras ratings
Both of these models have 2.5" lcd screen size.
Canon EOS 5D has 12.8Mpix picture detail and that is more details than picture at Sony Cyber-shot DSC-M2 camera which has 5.1Mpix.
Sony Cyber-shot DSC-M2 has optical zoom 3x and Canon EOS 5D is professonal model for which you should buy external lenses depending on your preferences and needs.