You asked
Sirui aurora 85mm f 1 4 vs samyang af 85mm f 1 4 fe ii?
Both are 85mm f/1.4 autofocus primes for full frame, and neither has stabilisation, so on paper they frame and blur the same way. The difference is mounts. The Samyang AF 85mm f/1.4 FE II is made for Sony E only. The Sirui Aurora 85mm f/1.4 also comes in Nikon Z, L-Mount and Fujifilm X, so it's the one to consider if you might switch systems.
If you shoot Sony E, either will do the job. An 85mm is the classic full-frame portrait focal length, so both suit portraits. Before buying any third-party lens, check that your body supports its autofocus features, as the third-party lenses guide explains.
Written by Claude from this site's pages.