Ringfoto 90-190mm f/5.8 Auto

The Ringfoto 90-190mm f/5.8 Auto is a camera glass that can be used with different camera bodies. It allows you to zoom in and out between 90mm and 190mm, which makes it a good alternative to fixed focal length lenses. The focus needs to be adjusted manually, which can be a bit challenging for beginners, but it gives you more control over the sharpness of your photos. The bokeh effect, which is the blurry background behind the subject, is decent but not exceptional.

The lens has a total of 7 glass elements that are coated to reduce reflections and improve image quality. The manufacturing time of this photographic lens is not specified, but it is likely to be a few years old. The aperture of f/5.8 is not very wide, which means that it may struggle in low light conditions, but it can still produce sharp photos if you use a tripod or increase the ISO.

The build quality of this lens is decent, but not as sturdy as some of the more expensive lenses. It is made of plastic and metal, which makes it lightweight but not as durable as lenses made entirely of metal. The resolution is good, but not exceptional, which means that you can still get sharp photos, but they may not be as detailed as some of the more expensive lenses.

Overall, the Ringfoto 90-190mm f/5.8 Auto is a decent option for those who want a zoom lens without breaking the bank. It has some limitations, such as manual focus and a narrow aperture, but it can still produce decent photos if you use it correctly.