Por un escritor de hombre misterioso
A look at the quirks and unique experience of shooting with early 35mm cameras produced by Leica in and around the 1930s.
5 LTM 50's for $500 or Less – The Thoughts & Photography of Johnny Martyr
Wrap Shot: Setting a 35mm Standard - The American Society of Cinematographers (en-US)
History of Photography: Leica, Barnack & the Electronic Flash
Leica — Photopedia — about photography blog
LEICA Barnack Berek Blog: PRE-LEICA 35mm CAMERAS
A Collection of My Petapixel Articles – The Thoughts & Photography of Johnny Martyr
Leitz 5cm f3.5 Elmar: The Meaning of Gestalt – The Thoughts & Photography of Johnny Martyr
Oskar Barnack's First Leica - mike eckman dot com
How To Use A Barnack Leica
Film diaries: Picking a camera – Ming Thein
Lessons from Oskar Barnack: Or, the Story of my Leica IIIa —
Barnack Quirks: An Intro to Shooting with Early 35mm Leica Cameras
Vintage Camera Design: Tools Can Be Beautiful: Part 2