Longer exposure & lower ISO or shorter exposure & higher ISO - what gives better results when photographing stars?
I've been dabbling with night landscapes and star photography with varying levels of success. I know I don't have the ideal lens (Canon 17-40mm f4 on a Canon 6D body) but I've seen some great shots ...
This is the Milky Way above Kakadu National Park, Australia, and my first try at astrophotography. Thirty second exposure, f/4.0 at 17mm with ISO 12800 (!!) which in hindsight probably was way too ...
I have been taking a few astro photos on a very high ISO, and have found what I think to be a few hot pixel. I though at first that I had managed to get a few very sharp pic of some red and blue ...