Astrophotography: which lense is the best?
HELLO everyone! Long time reader, first time poster! I just recently purchased a pentax k-5, with 18 - 135 and smc DA* star 55 mm 1.4 and it will all be here in 48 hours!
I'm looking at doing astrophotography like Ben Canales ( http://www.500px.com/BenCanales ). I'd like to be able to do images with and without star trails. What lens do you shoot stars with and what is the ideal lens in your opinion? Is a 2.8 open enough?
Thanks in advance, I'm looking forward to your replies!!!