IP cameras Comparison: Vicon, Dahua Technology (4)

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	Vicon VN-855DNV4	Dahua Technology DH-PSD81602-A360	Dahua Technology DH-IPC-HFW2449TL-S-PRO	Dahua Technology DH-IPC-HDW3849H-AS-PV-PRO
Contact manufacturer	Contact	Contact	Contact	Contact
Chip Inch Size	1/3	1/2	1/1.8	1/1.8
Colour Type	Colour / Monochrome	True Day / Night	Colour / Monochrome	Colour / Monochrome
Resolution	540	1080P	4MP	8 MP
Digital (DSP)	✔	✔	--	--
Specialist Type	Network	PTZ	--	--
Sensitivity Lux	0.01	0.005 ~ 0.02	0.0005 [email protected]	0.0008 [email protected] (Color, 30IRE) ; 0.0004 [email protected] (B/W, 30IRE) ; 0 lux (Illuminator on)
Auto Iris	✔	✔	--	--
Direct Drive	✔	✔	--	--
Voltage	24 V AC	36 V DC	12 V DC	12 V DC, PoE
Lens Mount	C/CS	--	--	--
Picture Elements HxV	PAL: 752 x 582; NTSC: 768 x 494	2 x 4096 x 1800	--	--
Back Light Compensation	✔	✔	✔	✔
Auto Gain Control	✔	✔	✔	✔
White Balance	✔	✔	✔	✔
Electronic Shutter Range	PAL: 1/50 ~ 1/100,000; NTSC: 1/60 ~ 1/100,000	1/3 ~ 1/100000s	Auto/Manual 1/3 s–1/100,000 s	Auto/Manual 1/3 s–1/100,000 s
S/ N (Signal/ Noise) Ratio dB	>52	> 50	>56 dB	>56 dB
Synchronisation	Internal	--	--	--
Signal Mode	PAL, NTSC	PAL, NTSC	--	--
Motion Activated	--	✔	✔	--
High Speed	--	✔	--	--
Focal Length mm	--	5	2.8 mm; 3.6 mm; 6 mm	2.8 mm; 3.6 mm
Mount Type	--	Wall	Pole, Corner	--
Wide Dynamic Range	--	✔	✔	✔
Image Frame Rate	--	25 ~ 30 fps	--	25/30 fps

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