The higher resolution, the better, that would be always right. But, the higher resolution, the more expensive, so it depends on the places or objects you want to monitor, one of my customers in UK said he wants to catch the man who always scratched his car, so he needs a very clear image or video to see that guy’s face, if so, I think the 5.0 megapixel POE PTZ camera is best for him, with the 18x optical zoom, it can catch about 100m object at a clear image.
for you, you should think that if it is suitable for you, cause spend less money and get the suitable one is your best choice.
On the market, the optical zoom ranges from 4x to 36x, the larger zoom is, the longer distance can be monitored. please noted that some PTZ camera suppliers will state the fake optical zoom, for example, the camera is 18x, they will mark it 20x, even 30x zoom and they can be displayed on the screen, they trying to convince you this is a real 30x or 20x optical zoom PTZ camera.
This is a REAL 18x optical zoom PTZ camera and it can reach to 200m vision, with 6pcs IR LEDs, the night vision is about to 100m.
Third Party Software’s Compatibility
When I was an eBay seller, I always receive my customers’ complains, that a PTZ camera cannot be added to his iSpay, Blue Iris software. So when you decide to buy a PTZ camera, especially you have already bought some IP cameras, you should first make sure it is compatible with your exit security system.
Warranty and After-service
I still remembered one of the customers asked me to help him update his one IP PTZ camera that he bought from others, cause he cannot find that seller anymore. I helped him find that seller and gave him the contact information, but he still asks for my help because the seller never answers his email.
Finally, I try to find the camera’s firmware version, but he forgot the login password. Until now, I feel guilty that I did not help him out.
So, please when you decide to buy one of this kind of camera, make sure the warranty and after service, this kind of camera is a little complicated, think twice before ordering.
Dome Camera Speed
It is hard to imagine that when you want to catch some surveillance areas quickly with low-speeded PTZ camera. For example, you have a large area to monitor, let’s say your large yard, but actually you only have three places are important to you, so you set three presets, to run the cruise from prest 1 to 3, if it is a low-speed dome camera, you will miss a lot.
In this situation, I highly recommend you choose the High-speed dome PTZ camera, they can support up to 240 degrees/s, just like this one, it is a high-speed dome POE PTZ camera.