Total sales is an absolute number (as in dollars).
Market share of A brand = sales of a A brand / total sales in the entire market by all brands.
So it is very possible that the Sony's market share has doubled, but its total sales can be triple, quadruple or half or 1/10. It doesn't matter. But looking at the tremendous growth of the DSLR market nowadays, i would say every company's DSLR sales have grown well. Including Canon whom has lost some market share. But I am sure their sales is also growing.
Last edited by daredevil123; 20th October 2009 at 12:11 AM.
OT: would a Sony A550+ SAL1605 kit or Nikon D90 VR kit both same price be better for a newbie? which camera is superior?