Now this is a really difficult one to answer. As far as I can make out:Originally Posted by clk550lover
- The lowest Canon body with a fully magnesium alloy chassis and full weather sealing is the 7D.
- The nnD line has a steel chassis covered with polycarbonate (plastic) and an aluminium (?) alloy casing. It has incomplete weather sealing. I believe that the lens mount is screwed into plastic rather than metal, which might not be good with heavy lenses
If anybody can prove me wrong with diagrams or X-rays then go ahead.
With Nikon the first magnesium alloy body is the D300s. The D90 is steel covered with polycarbonate
If I was going on a safari I would take a plastic body. Drop it on the floor and it bounces. Get it full of dust - well you can always throw it away and get a new one..
I can't