They only work IF you have enough light or are willing to run with the white LEDs on all night. And most of those videos also slow the shutter way down to let in more light and make the static image look great, but motion is a blur then.
So if you are grainy now, these are not the right choice for you.
The full color type cameras are not magic and all cameras need light, either visible or infrared, and since full color cameras cannot see infrared, they are the wrong choice if you don't have enough visible light or refuse to run the cameras with the buil-in white LED.
No 5MP camera exists on an ideal MP/sensor ratio and will probably perform worse than what you have now.
We cannot comment on 2.8mm lens without knowing your intended use. Do you want to identify at 50 feet or 10 feet?
Many people say 4MP on the 1/1.8" sensor is the sweet spot.
See this thread as you consider upgrading your cams as it lists out the most commonly recommended cameras based on distance to identify:
At the urging of several folks here, I created a thread to show the importance of focal length and how focal length can be more important than megapixels (MP). I mentioned some of this in the post regarding The Hookup’s latest video demonstrating different cameras, including one sold from a...
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