Autofocus cameras use a motorized lens and focus system to detect changes in the scene, then adjust the lens so subjects remain sharp as they move or viewing distances change. Many autofocus cameras also combine autofocus with varifocal or electronic pan, tilt, and zoom controls, helping installers frame different areas while maintaining clear video.

Autofocus cameras with optical zoom use moving lens elements to change magnification while maintaining image detail, motorized varifocal lenses adjust the focal length remotely for a selected viewing angle, and electronic pan, tilt, and zoom (ePTZ) changes the digital crop and framing without physically moving the lens. Optical zoom and motorized varifocal adjustment suit surveillance views that require lens-based framing, while ePTZ suits conferencing or compact installations where remote framing and auto-framing matter more than optical magnification.

Autofocus IP cameras generally require an Ethernet connection, with many models supporting Power over Ethernet (PoE) through a compatible PoE switch or network video recorder (NVR), while some also support local microSD storage. USB conferencing cameras typically connect to a compatible computer through USB or USB-C and may require a display clip, wall mount, tripod connection, or other suitable mounting hardware.

Autofocus cameras adjust focus as subjects or viewing distances change, helping keep people and objects clear during shifts between daylight, shadows, and indoor lighting. Many models also use features such as wide dynamic range, backlight compensation, auto exposure, low-light image sensors, or infrared and supplemental lighting to support usable video in dim or backlit scenes.