You asked
Leica apo macro elmarit tl 60mm f 2 8 asph vs sigma 56mm f 1 4 dc dn contemporary?
The Sigma 56mm f/1.4 is the one I'd pick for most people. It's a fast portrait prime that gives an 85mm-style view on APS-C, and it's made for six mounts, so it fits most APS-C bodies. Its f/1.4 aperture also helps in dim rooms and gives soft backgrounds, which is what the portraits guide recommends.
The Leica APO-Macro-Elmarit-TL 60mm f/2.8 is a different tool. It's a macro lens, about 90mm equivalent on APS-C, and it's the choice if you shoot small subjects up close. It's on the Leica side of the market and isn't stabilised.
If you're starting out, a fast standard prime like the Sigma is the better first buy. You can see where lenses fit in your kit on the lenses page.
Written by Claude from this site's pages.