Optomax 400mm f/6.3

Optomax 400mm f/6.3 is a camera glass that provides a long-range zoom, making it ideal for wildlife and sports photography. It has a good resolution that can capture fine details in the subject. The lens has a sturdy build quality, making it durable and resistant to wear and tear. It has lens elements that are coated to reduce the amount of reflection and glare, resulting in a clear and sharp image. The aperture of the lens can be adjusted to control the amount of light that enters the camera, allowing for better exposure control. The lens does not have autofocus, so the user needs to manually adjust the focus to get the desired sharpness. There are alternatives to this lens that provide autofocus, but they tend to be more expensive. The manufacturing time for this lens is not specified, but it is expected to take longer than other lenses due to its complexity. Overall, the Optomax 400mm f/6.3 is a good photographic lens that can produce high-quality images, but it requires some skill and patience to use effectively.