Ricoh 55mm f/2.2 Auto Rikenon - M42 Mount

This vintage prime lens features an M42 screw mount, making it easily adaptable to many modern mirrorless systems. It is known for its unusual optical design that can produce 'soap bubble' bokeh when shot wide open. It is a lightweight, manual-focus lens with a simple mechanical construction, providing a classic film look with modern digital sensors. Check the manual focus ring for even resistance, as the grease in these older lenses can dry out and become stiff. Inspect the aperture blades for oil, which can cause them to stick. SDS checks the M42 thread for damage and ensures the glass is free from haze or heavy cleaning marks, which are common in lenses of this vintage.