When sourcing CMOS HD IP Cameras, prioritize the sensor size and type; a 1/2.8" or 1/3" Sony Starvis CMOS sensor is industry-standard for high sensitivity. Ensure the resolution is at least 1080P (2MP) or 4MP/5MP for clear identification. Check the compression standard, where H.265+ is preferred over H.264 to save up to 50-70% on bandwidth and storage costs. Additionally, verify the Minimum Illumination (Lux) rating; for night vision, a rating of 0.001 Lux or lower ensures better performance in low-light conditions.