As Rokinon, Bowers etc are different names/branches for Samyang lenses. So I dare to say the lens ring will fit in case you use a pentax or nikon body.
Set the focus to 1m and tape it before you place the lens ring.
In PTGui set the lens as a 9mm lens.
Which body do you like to use? D800?
Last edited by hindenhaag; 02-25-2014 at 11:03 AM.