This is probably a daft question, but here goes;
I was trying to takes photos of the moon last night. I took the first ones with my D90 and 70-300VR. Set to P mode and spot metering. Photo was fine. Changed to the f2.8 150 sigma (macro) and had to go to -2.3 on exposure compensation to stop it over exposing. Still set to P mode and spot metering. Is there something wrong with the lens? I havent used it much but hadn't noticed it doing anything odd before trying to take pics of the moon.
I was trying to takes photos of the moon last night. I took the first ones with my D90 and 70-300VR. Set to P mode and spot metering. Photo was fine. Changed to the f2.8 150 sigma (macro) and had to go to -2.3 on exposure compensation to stop it over exposing. Still set to P mode and spot metering. Is there something wrong with the lens? I havent used it much but hadn't noticed it doing anything odd before trying to take pics of the moon.