Next week I hope to get a good chance to do my first Milky Way shoot. Last thing I struggle with is which of my lenses to use. I want to avoid startrails. In the final round are:
- Sigma 17-50 2.8
- Canon 10-18 4.5-5.6
From my point of view it is clear if I choose (17/) 18mm the Sigma wins because of 2.8 against 5.6, but what is to prefer if I use widest angel on both lenses?
What to prefer Sigma@17mm 2.8 OR Canon@10mm 4.5
I tend to use the Sigma, because 10mm - now my thesis - will give me more stars/Milky Way, but 4.5 is a bit slow. Is it only a question of perspective or will give me 10mm 4.5 more light than 17mm 2.8?