I’ll double check with Alarm.com and let you know but here is my current understanding of it.
The image sensor is designed for alarm verification, not to be a general purpose camera. It’s designed to show you there is a body in the picture, not to be a detailed picture to identify to person with. Comparing the image sensor to the Alarm.com HD video cameras, which are general purpose security cameras, isn’t a fair comparison.
The image sensor is only 320x240 pixels vs the HD Alarm.com cameras which are 1280x720 pixels. The small image size keeps cost down, conserves energy and enables the picture to be uploaded through the cell connection without taking too long in an alarm situation. The HD cameras upload their images via broadband.
The image sensor is battery powered so the IR lights don’t flash as bright the IR lights on an AC wall powered camera, to conserve battery life. The IR flash is the most energy consuming thing that the image sensors does.
Attached are a couple sample pics I took which are better but they’re at a shorter distance. Also keep in mind that in an alarm situation you’ll get 3 images so even though it’s kind of hard to see your body in the pic you took, it’s easy to see that a body has moved over several pictures.
I’ll let you know what ADC says about the problem though. They might have some inside knowledge I’m not aware of.