If your digital camera has an optical viewfinder and not an electronic one, you should never, never use this when pointing your digital camera towards the sun, especially for sunrise and sunset photos!

As your digital camera’s optical viewfinder is not tinted, it’s almost as bad as just pointing your head and looking straight at the sun. This could cause serious eye damage. Looking through a viewfinder versus the LCD helps you hold the camera sturdier and closer to your eyes, thus reducing camera shake.

However, in this instance, you should use your digital camera’s LCD. If you’re worried about camera shake, use a tripod.

However, especially with the sunrise, due to the brightness of the sky, your digital camera should normally be able to take very fast photos, minimizing any camera shake.