Here's Why You Get Noise in Long Exposures Even at Low ISOs

Noise is something we pretty much all try to minimize in our photos, and we know that one of the best ways to avoid it is to shoot at as low an ISO as possible. But even at low ISO values, you can still see noise, particularly as you shoot longer exposures. This great video will show you what long exposure noise is, why it happens, and how you can fix it.