Schneider-Kreuznach — 210mm f/5.6 plasmat lens for 5x7/4x5 view cameras, Copal 1 shutter
The Symmar-S 210mm f/5.6 is a longer-normal lens in Schneider-Kreuznach's 1961 Symmar-S range, sized to act as a standard lens on 5x7 inch cameras and as a portrait/detail lens on 4x5. It was later carried forward in updated form as the Apo-Symmar.
It shares the six-element, four-group symmetrical plasmat construction of the family, multi-coated, in a Copal 1 shutter with a 67mm filter thread. Image circle is approximately 295mm at f/22, enough for full 5x7 coverage with useful movements and modest 4x5 shift.
Like its siblings it needs mid-to-small apertures for edge-to-edge sharpness; wide open the field softens and vignettes. Its longer focal length suits head-and-shoulders portraiture and product work where a flatter, less wide-angle perspective is wanted.
Supply on the UK used market is steady and prices remain reasonable for a lens this size. Check shutter timing accuracy, look through the elements at an angle for cleaning marks or fungus, and confirm aperture click stops and blade movement are consistent.