crow747 wrote:
The Rokinon lens works very well.
To focus on infinity this is the easiest lens to use. Turn the focus ring to the stop and your done. Most other lenses you cannot do that, you have to fiddle with the focus ring to get the stars sharp then use tape to make sure it stays there. Even with the canon 7D crop sensor camera I have, the rokinon 14mm works fine for most astrophotography and is a very affordable lens to buy.
Not on my lens - have to back it off a bit. I use a jewelers lope to fine tune the focus.