Originally posted by jcvs Shared wisdom will be appreciated.
Here is my "wisdom".
1. Much false speculation floats around.
2. Leaving SR on never is a problem except for really long exposures. Therefore, leave SR on when using a monopod.
3. For long exposures, leaving SR on introduces a problem known in engineering as underdampened zero-mode. This means that the sensor may slowly "crawl" away from its initial position. You can actually see this when using a long focal length and 10x magnification in LV on a tripod. There is a tiny and slow movement which disappears when switching SR off. However, using the same experiment, you'll see that walking besides the tripod even on concrete ground has a bigger effect. So, forgetting to switch off SR has no big negative impact. It probably is less than forgetting to use mirror lock up which actually turns off SR anyway. But with exposure times approaching a minute you better follow the user guide's hint.