I have a Canon SD850 IS. Does anyone know how to change the shutter speed?

I don't own that exact camera but a similar model from the same Canon line. I don't think you can set it explicitly because it is automatic. You can definitely influence it though. The sport mode is a faster shutter mode. The ISO setting can be explicitly set and the higher ISO speeds will drive up the shutter speeds. You can set the speed explicity on the long-exposures but that's probably not the normal shooting situation you care about. Another thing you can do is under/over expose a shot to tweek the shutter speed. Once you take a picture, it tells you what speed was used. Then you can adjust the exposure slightly to nudge the shutter speed in one direction or the other.
I have a Canon SD850 IS. Does anyone know how to change the shutter speed?
Here's a link to get the user manual

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