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Message: <blockquote data-quote="Rexer John" data-source="post: 150005" data-attributes="member: 12691">Good question but theres no clear answer.A long exposure to me, is a shutter speed that will blur stationary objects when handheld. Hence the need for a tripod to hold the camera steady.The actual shutter speed that could be considered a long exposure (slow shutter speed) will vary depending on the focal length of the lens and how steady you can hold a camera. If you cant shoot at 100 ISO by hand without blurring from camera shake, you need to use a faster shutter.Raising ISO will allow you to use a faster shutter speed, but for a scene where shutter speed is not an issue, a tripod is your friend and will allow you to keep ISO with a shutter speed that would be too slow (long exposure) to be taken handheld.</blockquote>