The Hikvision DS-2CD2955FWD-IS is a 5 megapixel  (2560 × 1920) 180° fisheye camera with built in IR LED's achieving illumination up to 8m. Other great features include built in micro SD slot for storage of up to 128GB and PoE connectivity, intrusion & line crossing detection. This camera is a great alternative to a multi camera install and can be mounted on walls, ceilings and desks. allowing a natural 180° view 

5MP high resolution
1.05mm fixed lens
180° view angle
Up to 8m IR distance
H.265+
120dB wide dynamic range
Supports on board storage (up to 128GB)
Audio line in & alarm I/O
Intrusion & line crossing detection
Triple stream
12V DC & PoE (802.3af)