Voigtander Color Skopar 21mm f4

So-called pancake lenses are particularly popular with rangefinder and system camera photographers, offering these extremely flat-build fixed focal lengths but measured by their compact appearance top image quality.
 
Likewise our 4,0 / 21 mm, to which optionally a 21/25 mm clip-on viewfinder is available.
 
Just 136 grams of weight and fabulous 25.4 mm overall length with a filter size of 39 mm speak for the “portability” of this fine wide-angle with VM connection.