Dome cameras Comparison: Bosch, Siqura (4)
| Contact manufacturer | Contact | Contact | Contact | Contact |
| Chip Inch Size |
1/4
|
1/4
|
1/4
|
1/4
|
| Resolution TVL |
550
|
540
|
540
|
480
|
| Sensitivity lux |
0.0052
|
0.1
|
0.01
|
0.01
|
| Dome Type |
PTZ
|
Continuous Rotation
|
Continuous Rotation
|
Continuous Rotation
|
| Digital (DSP) |
✔
|
--
|
--
|
--
|
| Mount Type |
Wall
|
Ceiling
|
--
|
--
|
| Voltage |
18 V AC
|
24 V AC
|
19.2 ~ 28.4 VAC
|
19.2 ~ 28.4 VAC
|
| Focal length |
35 mm
|
3.8 ~ 45.6
|
3.4 ~ 119
|
3.6 ~ 91
|
| Auto Gain Control |
✔
|
--
|
✔
|
✔
|
| White Balance |
✔
|
--
|
✔
|
✔
|
| Electronic Shutter range |
1/1 ~ 1/10,000 s
|
1/1 ~ 1/10
|
1/2 ~ 1/30,000
|
1/2 ~ 1/30,000
|
| S/ N (Signal/ Noise) Ratio dB |
> 50
|
--
|
50
|
50
|
| Signal Mode |
NTSC
|
PAL / NTSC
|
PAL, NTSC
|
PAL, NTSC
|
| Colour Type |
--
|
Colour / Monochrome
|
Colour / Monochrome
|
Colour / Monochrome
|
| Pan Speed o/ sec |
--
|
300
|
--
|
--
|
| Tilt Speed o/ sec |
--
|
300
|
--
|
--
|
| Indoor/Outdoor |
--
|
Indoor
|
Outdoor
|
Outdoor
|
| Rotation Angleso |
--
|
360 pan, -10 ~ +190 tilt
|
--
|
--
|
| Presets |
--
|
256
|
--
|
256
|
| Compression |
--
|
H.264, M-JPEG, MPEG-4
|
--
|
H.264, dual MPEG-4, MJPEG
|
| Synchronisation |
--
|
Internal
|
Internal / Line Lock
|
Internal / Line Lock
|
| Back Light Compensation |
--
|
--
|
✔
|
✔
|
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