Guide to Leica: Leica 21mm f/3.4 Super-Elmar-M ASPH on Leica M Typ 240
Two new apertures series on the Leica M Typ 240 are presented:
Aperture Series: Leica 21/3.4 — Barcroft Building Rear (M240)
Aperture Series: Leica 21/3.4 — Barcroft Green Machine (M240)