Surveillance cameras Comparison: Bosch, Dahua Technology (4)
| Contact manufacturer | Contact | Contact | Contact | Contact |
| Chip Inch Size " |
1/4
|
--
|
1/3
|
--
|
| Colour Type |
Colour / Monochrome
|
Colour / Monochrome
|
Colour
|
--
|
| Resolution TVL |
550
|
5 MP
|
2MP
|
1080p
|
| Specialist Types |
Thermal
|
--
|
--
|
--
|
| Auto Iris |
✔
|
--
|
--
|
✔
|
| Sensitivity lux |
0.209
|
0.02 [email protected] (Colour, 30 IRE) ; 0.002 [email protected] (B/W, 30 IRE) ; 0 lux (Illuminator on)
|
0 ~ 0.001
|
0.02
|
| Voltage |
18 V AC
|
12 V DC
|
12 V DC
|
12 V DC
|
| Mount Type |
wall
|
Wall, Ceiling
|
--
|
--
|
| Wide Dynamic Range |
✔
|
✔
|
✔
|
✔
|
| Picture Elements HxV |
640 x 480
|
--
|
1920 x 1080
|
1936 x 1097
|
| Auto Gain Control |
✔
|
✔
|
✔
|
✔
|
| White Balance |
✔
|
✔
|
✔
|
✔
|
| Electronic Shutter range |
1/1 to 1/10,000 seconds
|
PAL: 1/25 s–1/100,000 s; NTSC: 1/30 s–1/100,000 s
|
1/25 s–1/100,000 s (PAL), 1/30 s–1/100,000 s (NTSC)
|
1/25 ~ 1/100,000s
|
| S/ N (Signal/ Noise) Ratio dB |
>50
|
>65 dB
|
> 65
|
--
|
| Signal Mode |
PAL
|
PAL, NTSC
|
PAL, NTSC
|
--
|
| Motion Activated |
--
|
✔
|
--
|
--
|
| Focal Length mm |
--
|
2.8 mm; 3.6 mm
|
3.6 mm; 6 mm
|
3.6
|
| Back Light Compensation |
--
|
✔
|
✔
|
✔
|
| Digital (DSP) |
--
|
--
|
✔
|
✔
|
| High Speed |
--
|
--
|
--
|
✔
|
| Synchronisation |
--
|
--
|
--
|
Internal
|
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