Hey everyone, quick question. I picked up a used 100-400 that appears to be in stellar shape and work fine, but after using it for a while here I'm not sure. To start, so I don't get the "you need to learn to hold it properly line" right away, I am a wedding photographer and hand hold my 70-200 2.8 IS version 1 down to 1/60th and below just fine all day long at 200mm. With this lens though, say at 400mm, it is almost impossible for me to get a hand held shot that is perfectly sharp. They either appear slightly soft or like there is camera movement - even at 1/400 or a little faster. I can't even produce images I'm happy with by sticking it on a tripod. Everyone once and a while I'll get one I think is ok, but in general, I'm starting to think this lens is a big white paper weight.
Am I either A - expecting more out of this lens than I should or B - does my lens need to be sent into CPS or C - I really do suck at photography and I just don't realize it... haha.
Yes, IS is ON except when on the tripod, then I took it off. If I'm decent at photography, how slow of a shutter speed should I be able to hand hold this lens on the long end of it?
Thoughts friends? Thanks...