Yes it is plastic, it comes without visor and its maximum aperture leaves a bit to be desired but for the rest it provides little zoom. The images produced are very good provided you do not exceed f11 from which the diffraction begins to be felt. Other openings, this small lens produces very nice images, stitched and pleasing. The zoom ring is comfortable and automatic autofocus is quiet and efficient. We just pestera slightly against the establishment hazardous manual focus and a little cheap packaging in which the product is delivered. If you start with a reflex and you do not necessarily need crazy openings to make photos in extreme lighting conditions and also that its amateur appearance put you off, then this is for you zoom. I bought it and I intend to keep it for a while :)