Dome cameras Comparison: Visionhitech, Bosch (4)

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	Visionhitech VD70HQ-S	Bosch VDC-455V03-10	Bosch VDI-240V03-1	Bosch VG5-613-ECS
Contact manufacturer	Contact	Contact	Contact	Contact
Chip Inch Size	1/3	1/3	1/3	1/4
Colour Type	Colour	Colour	True Day / Night	True Day / Night
Resolution TVL	560	540	540	550
Sensitivity lux	0.1	0.44	0.05	--
Mount Type	Wall Mount	Surface	Surface mount	Wall
Voltage	12 V DC	12 V DC / 24 V AC	12 V DC / 24 V AC	24 V AC
Focal length	2.9	2.6 ~ 6	2.8 ~ 10.5	--
Back Light Compensation	✔	✔	--	--
Auto Gain Control	✔	✔	--	✔
White Balance	✔	✔	--	✔
Electronic Shutter range	1/50 ~ 1/10,000	--	1/50 ~ 1/120,000 sec	1/1 to 1/10,000 sec
S/ N (Signal/ Noise) Ratio dB	> 50	>50	>50	>50 dB
Synchronisation	Internal	Internal, Line-lock	--	Line-Lock (–120° to 120° vertical phase adjust)
Signal Mode	PAL, NTSC	PAL	PAL	NTSC/PAL
Built-in IR LED	✔	--	✔	--
Dome Type	--	Continuous Rotation	Variable Focus	Variable Focus
Indoor/Outdoor	--	Indoor	Outdoor	Outdoor
Rotation Angles^o	--	360 pan, 90 tilt	--	--
Pan Speed ^o/ sec	--	--	--	360
Digital (DSP)	--	--	--	✔
Tilt Speed ^o/ sec	--	--	--	100

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