Leica 16-18-21mm f/4 Tri-Elmar-M ASPH Aperture Series: Big Tan Water Tank (Leica M240)
Get Leica M lenses at B&H Photo.
This aperture series was shot to explore general imaging characteristics.
In Guide to Leica:
Big Tan Water Tank (Leica M240 + Leica 16-18-21mm f/4 Tri-Elmar-M ASPH)
This f/4 - f/13 aperture series includes HD and UltraHD images as well as the usual crops.
This series is particularly instructive and strongly recommended to all Leica M shooters using or considering the Leica 16-18-21mm f/4 Tri-Elmar-M ASPH.