IP cameras Comparison: VIVOTEK, Dahua Technology (4)
| Contact manufacturer | Contact | Contact | Contact | Contact |
| Chip Inch Size |
1/4
|
1/2
|
1/2
|
--
|
| Colour Type |
Colour / Monochrome
|
Colour / Monochrome
|
Colour / Monochrome
|
--
|
| Specialist Type |
Network
|
--
|
Thermal
|
--
|
| Sensitivity Lux |
0.0
|
0 ~ 0.015
|
--
|
--
|
| Voltage |
12 V DC, 24 V AC
|
12 V DC, PoE
|
--
|
12 V DC, PoE
|
| Focal Length mm |
4.0
|
2.8 ~ 6
|
100mm; 20mm ~ 100mm; 30mm ~ 150mm; 38mm ~ 190mm
|
3.6
|
| Image Frame Rate |
30 fps
|
25 ~ 30 fps
|
20 ~ 30 fps
|
30fps
|
| Electronic Shutter Range |
1/5 ~ 1/15000
|
1/3~1/100000s
|
1/1s ~ 1/100000s
|
1 ~ 1/100,000s
|
| Resolution |
--
|
4MP
|
640 x 512
|
2 MP
|
| Digital (DSP) |
--
|
✔
|
✔
|
✔
|
| Auto Iris |
--
|
✔
|
✔
|
--
|
| Direct Drive |
--
|
✔
|
✔
|
--
|
| Mount Type |
--
|
Pole, Corner
|
--
|
--
|
| Wide Dynamic Range |
--
|
✔
|
✔
|
--
|
| Picture Elements HxV |
--
|
2688 x 1520
|
--
|
1920 x 1080
|
| Back Light Compensation |
--
|
✔
|
✔
|
✔
|
| Auto Gain Control |
--
|
✔
|
✔
|
✔
|
| White Balance |
--
|
✔
|
✔
|
✔
|
| Signal Mode |
--
|
PAL, NTSC
|
--
|
--
|
| S/ N (Signal/ Noise) Ratio dB |
--
|
--
|
> 55
|
> 50
|
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