3M-5SA MC 500mm f/8.0
The 3M-5SA MC 500mm f/8.0 is a camera glass that offers a fixed focal length and a wide aperture of f/8.0. It is a manual focus lens, which means you have to adjust the focus yourself, but it allows for more precise control of the focus. The lens is made up of multiple lens elements and has a lens coating to reduce glare and improve image quality. It is a well-built lens that is durable and can withstand heavy use. The lens produces a good resolution and has a decent bokeh effect, which means the background of the image is blurred, creating a pleasing effect. There are no autofocus capabilities, so you have to focus manually, but it is easy to use once you get the hang of it. The lens is available in different mounts, so you can choose the one that best suits your camera. Overall, the 3M-5SA MC 500mm f/8.0 is a great option for photographers who want a super telephoto lens with a wide aperture and good image quality.
Has no aperture blades, this is among the rare lens which does not have aperture control function, works always wide open.
139 mm long, with this size carry only if you use it. Weights 620 grams so it is a heavy lens, consider using its own lens bag. With a lens filter diameter of 72 mm you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options.