Here’s my
in-depth review of the Rokinon 16mm f/2.0 ED AS UMC CS Lens for astrophotography.
This is a great lens for ultra-wide angle shots of the Milky Way, starscapes and time-lapse animations.
I've also got a link to full-resolution APS-C frame shot of the Summer Triangle that you can download to pixel-peep the entire frame if you would like.
Jerry