A shutter release cable is also good for situations when you want to trigger the camera at a range where you need to set up the camera and tripod away from your hiding location.
I find cable release most useful is for shooting long exposures (>30s) at lowlight conditions and for shooting star trails at night (1hr+)..
If you're planning to do long-exposure shots on a tripod with the assistance of a shutter release, I think it would be a waste of money to get this.
What you can do instead is to set your shutter to "self timer" and use mirror lockup as well. Camera shake is greatly reduced this way.
Last edited by mysum; 29th June 2007 at 06:00 PM.
I think in many cameras, the bulb mode requires you to hold the shutter. I have never tried bulb mode with the self-timer before though. Does it work? Since your shutter is no longer held on...
Woops! I don't have that feature on my A710IS so I guess I missed that point.
Oh well at least it'll work for non-bulb long exposure modes.