Firstly i would like to say hello just joined this forum. I am looking at getting my first SLR camera my first question is im looking at either a canon or nikon camera. Why do the nikon cameras seem to have a lower MP than the canons? I am thinking of getting the canon 7D or the new nikon D3100 i would be taking mostly scenery and animal photos. And would be upgrading the lens at a later date i would like some info as im new to this thank you john.