Ricoh Rikenon 21mm f/3.8

Ricoh Rikenon 21mm f/3.8 is a camera glass with a wide angle of view for full frame cameras. It has a manual focus system and can produce a pleasing bokeh effect. It is made up of several lens elements that are coated to minimize reflections and improve image quality. The lens was manufactured some time ago but still performs well. Its aperture can be adjusted to control the amount of light that enters the lens. The build quality of this photographic lens is good, and it is durable. It can produce high-resolution images, making it a good choice for landscape and architectural photography. There are other alternatives to this lens, but it is still a good option for those who want a wide-angle lens with manual focus.