Quote:
Originally Posted by kenstogie
Heres what a 30 Sec Exposure looks like with my "new" tripod and a 250mm zoom, which is effectively more because of the image sensor size. I am sure I could get it sharper if I used the remote control.
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On a long exposures camera vibration caused by triggering the shutter release isn't really an issue (assuming camera is on tripod). The amount of time the camera may be moving compared to the amount of time the shutter is open is very small and doesn't account for much of the information gathered. Camera shake is an issue more towards the half second to 1/10 second exposures.
here is a trick too, if you don't have a remote shutter release use the timer. A two second timer will give the camera a chance to stop moving due to your shutter button press and will open after that movement is gone. For the really critically still shots, use the mirror lockup function (to further reduce motion in the camera) combined with a remote shutter release or timer method mentioned above.