The 55mm f/4 is a dedicated wide-angle lens for the Pentax 6x7 system, covering the 6x7cm format. On the 6x7 format, 55mm provides a moderately wide angle of view, equivalent to approximately 28mm in 35mm terms — well suited to landscapes, architecture, and environmental portraiture. Fitted with Pentax's Super Multi Coating, which suppresses flare and ghosting while maintaining contrast and color fidelity. SMC was among the most effective multi-coating technologies of its era and remains highly regarded. Full manual focus operation via a smooth focus ring, consistent with the Pentax 6x7 system's design philosophy. Pairs naturally with the 6x7's waist-level or eye-level finders for deliberate, precise composition. Compatible with all Pentax 6x7 and 67II bodies. The 6x7 lens mount has re.