1.What is a Camera Iris?
A camera iris is the part of the camera that controls how much light comes through the lens. If the iris creates a larger opening, more light can get through; a smaller opening allows less light through.
When it comes to IP surveillance, you have several different styles of camera irises to choose from: a fixed iris, a manual iris, an auto iris, and a P-iris.
2.How it works
The iris works by controlling the amount of light that is allowed into the camera. Too much light will wash out your video, and too little light will make everything dark, so it’s important to have an iris that’s based on your camera’s location. There are four different types of irises commonly in use.
On a fixed iris, the opening that allows light into the camera & cannot be adjusted
This type of iris is ideal for indoor recording where the light levels stay consistent when the camera is recording, such as an office or school with many large overhead lights
With a manual iris, you can adjust the amount of light by physically adjusting the iris.
Auto irises are motorized, allowing them to automatically adjust the iris opening to the changing light throughout the day
Auto irises are better suited for recording in outdoor locations where the changes between sunlight and nighttime can be accounted for automatically
The “P” in P-iris stands for “precise”. The iris has the ability to automatically adjust like an auto iris and with controls in the camera’s software, it is possible to create improved video clarity and depth.
Cameras with a P-iris are better suited for recording in locations where light is constantly and quickly changing