Image Stabilization Question
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30-10-09, 05:40 PM
Join Date: Jul 2009
You shouldn't notice any physical difference when you have the IS on nor will it change any of the values displayed on the LCD.
The rule of thumb for camera shake is 1 over the focal length so if you have 100mm you need roughly 1/100sec shutter speed working that backwards by three stops (and 1/100th is a half stop value) you have a shutter speed of around 1/12 sec.
Thats the easy bit, the rest of it depends on things like how steadily you can hold the camera, you might get more or less in the way of shutter speed, before camera shake is an issue, and then factors such as the wind and peoples movement can all conspire to reduce that advantage.
I think the best advice would be to look for a small table of shutter speeds, (stops and half stops), look at what focal length you have, and what the camera is telling you it wants for a shutter speed, then working back by three stops check the speed is faster than the rule of thumb. The rest is down to experimentation and chancing your arm I'm afraid because it's going to be different for everyone, even the way you stand can affect it.
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