The Rodenstock Imagon 120mm f/4.5 is a soft-focus portrait lens in the Imagon A series, designed to be used with interchangeable perforated aperture discs (sink strainers) that control the balance between sharp core image and diffused halation. It was aimed at portrait and pictorial photographers working on medium and large format, and remains sought after today for its controllable soft-focus rendering rather than conventional resolution.

At recent UK auction, hammer prices for the 120mm Imagon A have ranged from £130 to £380, with a median around £300 across the three sales on record. As of 2026, clean examples complete with their original disc set tend to sell for the upper end of that range, while incomplete or cosmetically tired copies are worth closer to the £130 floor — these are saleroom results, so dealer retail on a fully serviced lens typically sits higher than the price a bidder pays on the hammer.