Why are lenses larger than 6cm not allowed to enter the gymnasium?

1, maintaining the order and safety of the stadium, long lens, tripod, etc. It does create certain dangers when entering and leaving and emergency evacuation;

2. Maintain copyright. The copyright here includes both video copyright and picture copyright.

In film and television, the lens has two fingers, one refers to the optical components used by film cameras and projectors to produce images, the other refers to the continuous picture taken from power on to power off, or the fragment between two editing points, also known as the lens. One finger and two fingers are two completely different concepts. In order to distinguish, one refers to the optical lens and the other refers to the lens picture. According to the origin of lenses, mainly Japanese lenses and German lenses. Japanese lenses mainly have good color reproduction, while German lenses have a strong sense of layering. China's lens has gradually occupied a certain market in the market, mainly because the price is relatively low.

According to the origin of lenses, mainly Japanese lenses and German lenses. Japanese lenses mainly have good color reproduction, while German lenses have a strong sense of layering. China's lens has gradually occupied a certain market in the market, mainly because the price is relatively low. According to the performance and shape of the lens, there are P-type, E-type, L-type and auto-zoom lenses.