I'm on my second Samyang 14mm.
Both lenses have been brilliantly, biting sharp in the center. The first one had a veiling contrast loss at f/2.8, but this second copy doesn't seem to have that issue at all.
The first one had inconsistent corner sharpness. I would get good corners on the right, then a bad corner, then good on the left, then bad. I finally figured out that the mount was not at tight as any of my other Sony Alpha lenses, whether Sony, Sigma, Minolta or Tamron. And that it was possible to push on the lens while mounted and fix the corner issue.
Anyway, the second lens appears to be optically even better, but still has the inconsistent right side corners issue, unless I push the lens to the right a bit while shooting.
I'm thinking to shim part of the lens mount to get the lens to mount properly without any corner issues. This lens is bitingly sharp, doesn't have veiling haze at f/2.8 and the corners are good when the lens is "flexed" to the right. I don't really want to keep playing "lens roulette" with any more purchases from Adorama / B&H with absolutely no guarantee I'll find another good copy next time.
Anyone else had this problem with the Samyang 14/2.8?
Anyone else