I’ve written a thirtieth guest post for the Leica Camera Blog. It’s titled The Enigmatic 18. My previous guest posts were Quality of Light, Wide Elmar Monochrom, Luminescent Lobby, The Leica M Monochrom and the 50 mm Leica APO-Summicron-M lens, X Vario Black-and-White, Reverberations, Shadow Boxing, Wide Lux Monochrom, Sweet 16, Classic Wide Monochrom, Through a Glass Darkly, Ethereal Shadows, Infrared Monochrom, Ultra-Wide Monochrom, Shadow Play, Wide Monochrom, Wide Eye Wonder, Faces, Dark City, A Luminous Presence, Stillness in Time, Expressive Architecture, Radiant Light, Fun with Diagonals, The Versatile 24 Lux, Going Wide-Angle, Going Ultra-Wide, Color or Black-and-White, and Surreal Vegas.