Dome cameras Comparison: Visionhitech, Dahua Technology (4)
| Contact manufacturer | Contact | Contact | Contact | Contact |
| Chip Inch Size |
1/3
|
--
|
1/3
|
1/3
|
| Colour Type |
Colour / Monochrome
|
--
|
Colour / Monochrome
|
Colour / Monochrome
|
| Resolution TVL |
570 TVL
|
720p
|
4MP
|
5MP
|
| Sensitivity lux |
0.0002
|
0.05
|
0.01
|
0 ~ 0.04
|
| Voltage |
24 V AC
|
12 V DC
|
12 V DC
|
12 V DC
|
| Focal length |
7.5 ~ 50 mm
|
3.6 mm
|
3.6mm
|
3.6 mm
|
| Auto Gain Control |
✔
|
--
|
✔
|
✔
|
| White Balance |
✔
|
--
|
✔
|
✔
|
| Electronic Shutter range |
1/60 ~ 1/100,000 s
|
1/50s ~ 1/100,000s
|
1/3 - 1/100,000s
|
1/25(30) ~ 1/50,000s
|
| S/ N (Signal/ Noise) Ratio dB |
>50
|
--
|
>65
|
65
|
| Synchronisation |
Internal, Line lock
|
Internal
|
--
|
--
|
| Signal Mode |
NTSC/PAL
|
--
|
--
|
PAL, NTSC
|
| Dome Type |
--
|
Static
|
--
|
--
|
| Digital (DSP) |
--
|
✔
|
✔
|
✔
|
| Built-in IR LED |
--
|
✔
|
✔
|
--
|
| Indoor/Outdoor |
--
|
--
|
Indoor/Outdoor
|
Indoor/Outdoor
|
| Mount Type |
--
|
--
|
Wall, Pole
|
--
|
| Back Light Compensation |
--
|
--
|
✔
|
✔
|
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