You asked
Viltrox af 50mm f 1 4 pro vs samyang af 50mm f 1 4 fe?
Both are 50mm f/1.4 autofocus primes for full frame, and neither has stabilisation, so the choice mostly comes down to your camera mount.
The Viltrox AF 50mm f/1.4 Pro is the more flexible pick. It fits both Sony E and Nikon Z, and it works with a longer list of bodies.
The Samyang AF 50mm f/1.4 FE is the 2016 original. It's heavier than the II and listed for Sony E only. If you already shoot Sony and want an older, widely used copy, it's a solid choice. There's also a Samyang AF 50mm f/1.4 FE II, but I don't have full details on it here.
On full frame, 50mm is a natural, slightly tight view that suits people and everyday shooting, as explained in portraits. Before you buy, check that your body supports third-party autofocus, as covered in third-party lenses.
Written by Claude from this site's pages.