Not sure if I can explain this well. Here's my issue. Over the past 3 weeks I find my 70-200 2.8 acting weird. I'm shooting soccer and to get a properly exposed image Im shooting 1/4000 at f22.... in the past it was usually around 1/2000 at f5.6 in the same lighting conditions. yesterday at the game I was stuck shooting at around 1/4000 at f22. I switched 70-200 lenses with a friend and with his lens I was shooting 1/1250 at f5.6 to get good exposure. when I put my lens back on I had to shoot 1/4000 at f22. Also my friend used my lens on his d4 and it worked fine. Does that make sense? Any thoughts ? |