3M-6A 500mm f/6.3

The 3M-6A 500mm f/6.3 is a type of camera glass that allows for super telephoto shots. It is manually focused and has no aperture control function, meaning it always works wide open. The lens is quite large, measuring 163mm in length and weighing 1400 grams, so it may require its own bag for transportation. It has a 95mm lens filter diameter, which can be expensive to purchase, but the Cokin system may be a more affordable alternative. The lens is made up of multiple elements and has a lens coating to improve image quality. The manufacturing time is unknown. The aperture is fixed at f/6.3. The build quality is sturdy and durable. The resolution of the lens is not specified.

Optical design

Has no aperture blades, this is among the rare lens which does not have aperture control function, works always wide open.

Physical characteristics

Weights 1400 grams so it is a heavy lens, consider using its own lens bag. 163 mm long, with this size carry only if you use it. With a lens filter diameter of 95 mm finding lens filters in this range can be expensive consider using Cokin P system if you really need one.