I was told that All Nikon Dslr camera bodies were made of magnesium not just the high end ones . Is this Fact ?? Also, What are some salient points to consider between a Nikon 7100, versus the New 5300. I know about the difference in mirrors , focal points (for auto focus), the articulating view screen etc. Do these things break off? As I have stated on another Thread most all camera shops in the Dallas area, are now null and void (only 3 left). And are a good distance away. I've held the 7100 and a 5200, but the new 5300 is not in captivity in this area. Does Anyone have any personal experience with this model ??