Best exposure practices for night photography?


TPF Noob!
Feb 24, 2013
Reaction score
Can others edit my Photos
Photos NOT OK to edit
Hey all—

I'm getting into this astrophotography thing, and I have a few questions. First off, I am using a Canon 5D Mk II with a handful of prime lenses with nice apertures. So I'm well-equipped for this task.

My main question is - how much noise reduction should I let the camera do?

In my experience, when shooting RAW, I can get better high-ISO noise reduction results out of Lightroom than the camera can with the built-in "High-ISO Noise Reduction" feature. However, knowing the basics of how the "Long Exposure Noise Reduction" works, I think that one is worth using. Anyone have a different opinion? I would basically like to know what will give me the least noisy finished product: Leaving on the Long Exposure Noise Reduction, or turning it off? Would the answer to this question be different when exposing for 30 seconds vs, say, 15 minutes?

Another question: How long do you think it is safe to leave my shutter open and exposing, without developing long-term problems (hot pixels or worse)?

Thanks for the input everyone!

Most reactions

New Topics