It varies from lens to lens - Some of the newer Canon offerings of image stabilized lenses don't require you to turn off the IS when using a tripod. You need to read the instructions for each IS lens you own.
When I have my 100-400 on a tripod with the IS on, you can see the image slowly move to one side in the viewfinder ... rather disconcerting. If you are holding or supporting the camera/lens in such a manner that if you move the camera moves, then use the IS. If it is sitting on its own, be it on a tripod or a brick wall, turn off the IS (unless the instructions for your lens say otherwise!).
Not turning off the IS does not damage the lens in any way ... it just uses up your battery and may actually make your photos worse.
|