ekaton

And now Sigma, pls launch your compact primes with aperture ring with Z mount and I will be in the Nikon camp.

With the 20-70 and a fast prime this will be my new "travel/out with family" combo. With the high resolution sensor cropping will allow to cover a large envelope of situations and needs.

All it proves is that someone who is not a very experienced RF shooter should not try to demonstrate strengths and weaknesses of a fast M-lens with a RF camera.

Did not know that Leica has its own sensors:-D

Have a look at the Samyang 75 f1.8 x-mount. Good, compact, lightweight, inexpensive.

But the 12-100 can only be mated to a 20MP mft sensor and not to a 60MP FF best in class one. Quite a substantial difference. If it was about size and zoom range only we could add a Sony RX 100 ...

The only high IQ shirt pocket size contender are Ricoh's GRIII. All others are significantly bulkier.