The standard 150mm normal lens for 4x5 large format photography with excellent Schneider optics.
The Schneider Symmar-S 150mm f/5.6 is a standard focal length large format lens for 4×5in photography, using Schneider's Symmar-S symmetric formula — a six-element double-Gauss design optimised for even sharpness across the full 4×5in field. The 150mm focal length is considered the 'normal' lens for 4×5in, equivalent to approximately 45mm on full-frame.
150mm focal length, f/5.6 maximum aperture, Symmar-S six-element symmetric formula, large image circle (approximately 210mm) covering 4×5in with movements, typically mounted in Copal No.1 shutter.
The Symmar-S 150mm is the most practical all-round large format lens — sharp, well-corrected, compact, and with sufficient image circle for moderate movements. It is ideal as a first lens for 4×5in photographers or as the standard in a multi-lens kit. The S (improved) version supersedes the original Symmar with improved anti-reflection coating.
Verify shutter function at all speeds. Inspect all elements for fungus, haze, and coating condition. Confirm Copal No.1 shutter dimensions match your lensboard. Check aperture blades for oil contamination. Test shutter cocking and release.