It`s easy to remove caps from lens, because there is a spring in the middle of cap Spring-into type
MaterialÃ¯Â¼Å¡ Hardware plastic
Function: It can keep out wind, rain and sand from the lens .
1. When you take photographs with one way of Back-ligh, side- light, follow-light or flash-light, the lens hoods to block the sun or other light source in order to prevent lens foggy
2. When you take photographs in the day or night, the lens hoods can block the sun or other light source
3.It can prevent an injury to the lens by accident, also can prevent lens were dirtied by finger, even can keep out wind, rain and sand to the lens. Choosing a cap in kinds of size which matches to lens. If you put standard-lens cap on the wide-angle lens, it would be nothing in the photos; similarly, if you put wide angle lens cap on the standard-lens, the cap could not cover lights.