>>2572790>that crap of a photoOn a regular APSC camera (ie excluding lolcanen and older sigmas like your one), assuming you're using the 600 rule that crappy 20mm would let you gain 2,5 seconds of exposure on 40 over using, as an example, the Tokina 11-16mm f/2.8.
And your stars aren't trailing, they're running as you couldn't even get to 20s with your setup even by using the 600 rule, while to have pointy stars without tracking you have to go with the 400 one.
