A static camera can cover a small area of view, but a camera that can rotate on its point and that can tilt may be smart covers larger area than the static camera. This type of security camera reduces the number of cameras needed to monitor a particular area, and you can monitor a large area with a single camera this also reduces the total installation costs.
Resolution 4K, 1080P, 8MP, 12MP
Higher resolution means better image quality; resolution defines by the number of pixels; more pixel means clear image, the decision becomes necessary when you are trying to identify a face or things in the pictures. When you are trying to zoom a lower resolution image, it gets blurry.
Area of view
The angle of view refers to the range of camera’s viewing/recording, every camera has its rage of view. And it is an essentialaspect because it defines how many cameras you will need to install in a particular area. A rotating camera may cover fourtimes more range than a fixed camera can cover. Most common wide fixed angle for the 5MP camera is 2.8mm lens in a dome.
Infrared or matrix IR Night Vision
If you want to see in low light or no light, you should look for cameras with Infrared or matrix IR. Starlight cameras are sometimes better the IR camera; the starlight chip can produce a color picture with very little light at night.
A camera with a built-in microphone is a good idea if you need to record audio. Especially useful if training people or trying to improve customer service for a business. If you don’t pay your employees enough, you can listen to what they have to say about you. Please check your local laws, recording audio without someone’s permission might be illegal. Posting a Sign is required in California.
A Cameras with Wi-Fi capability can be used to connect to your NVR or cloud through your local internet. Don’t forget to change the password and update the firmware. Some sneaky people could be watching you without your knowledge. Make sure you have the master password. Never keep your financial and security password the same. Words with random numbers and letters with few special characters like @% is a good idea.
Cost is a significant factor in every purchase decisions if a camera cost is substantial and above your expectation then you may need to revise your choice to purchase. Thus the price of cameras must be affordable, and quality should be better.