Welcome to SHENZHEN SECTEC CO., LTD!

Home > Service > FAQ

Service

CCTV Lens Guide

times   2015-11-16

Focal Length (mm)of a lens determines how far the camera can see.we can conclude that the bigger the focal length, the farther away it can focus.The smaller the focal length, the wider the field of view.

CCTV Camera Angle .jpg

Copyright © Shenzhen SECTEC Technology Co., Ltd.
Top