this is exactly the result I was seeing with my 70-200 Tamron. It would auto-focus, confirm that focus is sharp, fire... and be just a wee bit out of focus..frequently.
hi Divamum just i looked at an earlier post and you said that you shoot at 1/250 and 1/100 well thats not bad really for hand held with IS its the 1/30 that is a problem. but looking at the OP the first shot is at 1/200 now that i dont understand unless he was just unlucky. i just checked some shots from the weekend a i have one with some shake on it and that was at 1/250 and i put it down to me and bad luck.
When I shot in AV then I keep an eye on the speed as i dont want it to be to slow because of the shakes (at my age it just gets worse). What I would do is get the camera on a tripod and try some test exposures see if he can recreate the problem, the tripod will eliminate the shake problem.
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When I shot in AV then I keep an eye on the speed as i dont want it to be to slow because of the shakes (at my age it just gets worse). What I would do is get the camera on a tripod and try some test exposures see if he can recreate the problem, the tripod will eliminate the shake problem.