For long-time GH1 to GH5 shooters like myself, loyal from the beginning, at a time everyone else was shooting Canon, the S1 is a milestone. I have a bit of an emotional attachment to it already, being the first Panasonic full frame camera. It is not my first L-mount camera though. I’ve been shooting with the Leica SL for a few years now and it is still the most clean, ergonomic, minimalist full frame mirrorless body. It cannot, however, match the sheer size of the feature-set on the £2199 ($2499) Panasonic S1.