Originally posted by Na Horuk I think there is at least one user on these forums who has the whole Samyang K-mount collection. They all seem to be optically very good, I enjoy the one that I have.
I have the 14mm, but I would actually recommend the 16mm f2.0. Faster, easier to focus, not as awkwardly wide, but still ultra wide and can be used for astrophotos, interior, etc. without the heavy distortions
I've got the 8FE/10/14/16/24/35 and 85. They don't all get as much use as I'd like, but when there's a sale, I try to encourage Samyang to keep making K-mount lenses. Also, I'm kind of placating the "me from 20 years ago" who craved fast wide lenses. (He had better eyes than I do, unfortunately.)
I also find the 16mm to be a lot easier to focus than the 14mm. I'll probably get the 12mm fisheye, but I'm hesitating on the 50, 100, and 135 - they're rather big and expensive for focal lengths I already have covered reasonably well. I suspect filling in gaps in the Cine line is driving their new lens choices these days.