image moves in viewfinder with Sigma 17 50 !!!
Re: image moves in viewfinder with Sigma 17 50 !!!
i tried to do your test and it turns fine , but when i'm not moving and holding the camera well after pressing the half the shutter as i told you i feel the focus point slightily move or i don't know what they call that vibritaing or shaking should i got it used so i don't know what to do :S
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