Rodenstock's enlarging lens — the Ysaron 150mm for quality darkroom printing.
The Rodenstock Ysaron 150mm f/4.5 is an enlarging lens from Rodenstock, the respected German optical manufacturer. The Ysaron designation places it in Rodenstock's budget enlarger lens tier, below the premium Rodagon line, providing good optical quality at an accessible price.
The lens provides 150mm at f/4.5 maximum aperture with Rodenstock's optical quality standards, flat-field correction for even sharpness across the print area, a standard M39 or similar enlarger mounting thread, and an aperture ring for exposure control.
Rodenstock's Ysaron lenses represent quality German optical manufacturing applied to the darkroom enlarger market. While below the Rodagon in the Rodenstock hierarchy, the Ysaron provided meaningfully better optical performance than budget OEM enlarging lenses. Suitable for 4x5-inch and medium format negative projection.
Inspect the optical elements for haze, fungal spotting, or delamination — Rodenstock enlarger lenses are well-built but susceptible to storage degradation. Test aperture blade operation. Verify mounting thread compatibility. Rodenstock optical quality makes this suitable for precision copy-stand work if adaptation to a camera is intended.