Schneider's Componon — the 150mm for large format 4x5 enlarging.
The Componon 150mm f/5.6 covers 4×5in large format negatives and is part of Schneider's professional enlarging range. It is used in professional labs and darkrooms for large format printing, offering Schneider's characteristic multi-coating and precision construction for demanding colour and black-and-white applications.
150mm focal length, f/5.6 maximum aperture, Schneider multi-coated, M39 thread mount, designed for 4×5in large format negatives.
The Componon 150mm competes with the Nikon EL Nikkor 150mm f/5.6 and Rodenstock Rodagon 150mm f/5.6 for professional large format darkroom work. Optimal at f/8–f/11. Relatively uncommon on the second-hand market given the smaller pool of large format darkroom users.
Inspect elements carefully; larger elements present more surface area for potential fungal growth. Check M39 thread and lensboard compatibility. Aperture blades should be clean.