Introduction

The Zeiss ZM 21mm 4.5 C-Biogon is the widest of the three “Classic” designs in Zeiss’ ZM line up. It has long been discontinued and it wasn’t in production for a long time, so it is a bit rare and rather expensive on the used market. I always wondered how it would compare to the similarly compact yet newer Voigtländer VM 21mm 3.5 Color-Skopar and now we will finally find out.
Lens is being tested on 42mp Sony A7rII and 24mp Leica M10
Sample Images



























