Here we see the smallest Full Frame interchangeable lens camera attached to the smallest view camera.
It’s the latest addition to the L-Alliance announced at Photokina 2018. Leica, Panasonic and Sigma made public to use the Leica L bayonet (by then known from the SL) for their new mirrorless cameras. It brought us the first full frame Panasonic and now this really compact Sigma.
Obviously this small camera body looks neat on an Actus-G. And it makes a very portable solution without having to forgo on image quality. But it works as well on a full size view camera!

Sigma FP on the Actus-XL