- Shooting handheld at dusk or on overcast days when it isn't bright enough to use a shutter speed higher than 1/60 sec with your standard lens. (At speeds slower than this the risk of camera shake becomes greater.)
- When you are using telephoto lens and there is not enough light to use a shutter speed that us at least as high as the focal length your lens is set to. (For example, if using a lens set to 200mm, the shutter speed should be at least 1/200 sec to reduce the risk of camera shake)
- When photographing fast-moving subject and the light isn't bright enough to use a shutter speed quick engough to freeze the motion.
- When using flash and the flashgun isn't powerful enogh to correctly expose your subject - either becaouse it's so dark or your subject is too far away.
- When you're shooting indoor, and flash is either prohibited, or would be obtrusive (such as at a live performance) or would destroy the atmosphere created by the ambient lighting.
- When you need to use a small aperture to create a wide a depth of field, but doing so gives a shutter speed that;s too slow to handhold.
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