I've loaned a friends 100-400 lens for the F1 testing at Silverstone on Tuesday. Having not used the lens before can anyone tell me the difference between the two IS modes - in particular for panning is one more suitable than the other or am I better with IS swithed off?
CANON EOS 40D VS NIKON D90
At half its original release price, the 10.5MP Canon EOS 40D offers enthusiasts a real bargain. Barney Britton finds out whether it can still hold its own against its latest rival, the video-enabled Nikon D90