4MP 25x Starlight IR Network PTZ Camera

DH-SD49425GB-HNR is a 4MP network PTZ built around a 1/2.8" STARVIS CMOS sensor with Starlight low-light performance, aimed at installers needing long zoom reach and analytics on one head.

Optics and low light

The 5–125 mm F1.6–F3.6 lens delivers 25x optical zoom (16x digital), field of view running from 51.9°/39.7° down to 3.0°/2.2° (H/V), with auto/semi-auto/manual focus and 0.1–0.5 m close focus. Minimum illumination is 0.005 lux colour and 0.0005 lux B/W at F1.6, dropping to 0 lux with the 4 built-in IR illuminators active, giving IR range up to 100 m.

Resolution and image processing

Max resolution is 2560×1440 (4MP), with H.264/H.265/Smart H.265+/MJPEG across 3 simultaneous streams, up to 25/30 fps at 4MP. Image processing includes WDR, BLC, HLC, electronic image stabilisation, electronic defog, 2D/3D noise reduction, Day/Night (ICR), multiple white balance modes, motion detection and RoI. Privacy masking covers up to 24 areas.

PTZ and analytics

Pan is 0–360° endless, tilt –15° to +90° with 180° auto flip; 300 presets, 8 tours (32 presets each), 5 patterns and 5 scans. Onboard IVS covers tripwire, intrusion, crossing fence detection, loitering, abandoned/missing object, fast moving, parking detection, people gathering and vehicle/human classification, alongside SMD 4.0. Auto Patrol links an IVS trigger to a PTZ turn-and-patrol on presets. AcuPick uses deep-learning search to match people and vehicles across live and recorded video. Face detection covers tracking, snapshot upload, enhancement, cutout, and extraction of 6 attributes and 8 expressions including gender, age, glasses and mask. DORI distances: 2500 m detect, 987.5 m observe, 500 m recognize, 250 m identify. The housing carries an IP66 rating.