Canon 500D wrote:
If you are using a 40D, you should be looking at the 60D as an upgrade. It is the latest equivalent, and you appear to have missed it out....Your landscapes are probably being shot using manual focus, or variations of that.
Latest doesn't necessarily mean most worthy of consideration. Some don't regard the 60D as the latest equivalent in itself but rather the latest equivalent in name only - they feel its position ended with the 50D. I'm not talking about the use of polycarbonate on the 60D whereas the 50D and 40D had magnesium bodies - if plastics are good enough for the motorsports and aerospace industries, they'll probably be good enough for a camera. Some features in the 50D are actually either absent from or reduced in the 60D.
With your assumption that manual focus is being used for landscapes, the lens microadjustment could come in very handy on the 50D - the 60D doesn't have it.