Sony fe 100mm f 2 8 stf gm oss vs sigma 105mm f 1 4 dg hsm art?

Both are 100 to 105mm portrait-length primes for full frame, but they suit different shooters.

The Sony FE 100mm f/2.8 STF GM OSS is made for Sony E mounts only, and it's stabilised. Its apodization filter gives very smooth out-of-focus backgrounds, but that costs light (T5.6). It fits bodies such as the Sony a7 III.

The Sigma 105mm f/1.4 DG HSM Art is the one to pick for shallow depth of field and low light. It's known for its background blur, but it's very large, very heavy and not stabilised. It comes in Canon EF, Nikon F, Sony E and L-Mount.

If you mainly want soft backgrounds and you'll tolerate less light, the Sony suits you. If you want the widest aperture and don't mind the weight, the Sigma is the stronger portrait lens. For a lighter start, see portraits.

Written by Claude from this site's pages.