Hi all, I was recently going to buy a lens for my 7D camera (the Canon 17-55mm 2.8 IS Canon and then soon after the Canon 10-22mm) Which would set me back around 1800 AUS dollars. The lenses are not compatible with full frame cameras. So then i started thinking, well if i am going to upgrade to full frame one day, I realised i could do that now instead of buy these expensive lenses which i would then have to sell at a loss later on. Currently I could put the $1800 dollars towards the 5D Mark II and Sell my 7D Used for about $1000 so i have $2800 dollars. This is enough for a 5D Mark II and the 24-105mm f/4 lens. Which retails for $2588 dollars from America when converted into AUS dollars. What do you people think or recommend?. Maybe wait for mark III? . Thankyou.