|
1. The Comparison Sheet For CCD And CMOS:
|
CCD |
CMOS |
| Board |
 
(The CCD camera board is
complex.) |
 
(The CMOS
camera board is simple.) |
|
Photo |
 |
 |
| Cost |
Expensive |
Cheap |
|
Note |
1.
The CCD cameras are more clearer, sharper and brighter than CMOS
cameras. 2. If you
want to install the camera in the dim or dark place, we recommend you CCD
camera. |
2. What Is the Day & Night Camera?
|
Is it effective
to collocate IR equipment with the camera ? |
|
All Black & White Camera |
Yes |
|
Color Camera |
Color Usual
Camera |
No |
| Color Day &
Night Camera |
Yes (but when "IR on" in the
dark place, the image will become black & white) |
3. The Comparison Sheet For Mini Camera:
|
Pinhole
Lens |
(Flat) Pinhole
Lens |
Board Lens |
| Product |
 |
 |
 
(most dome cameras are board lenses) |
| Cost |
Expensive |
Cheap |
Cheap |
| Definition |
The Best |
The
second |
The Best |
|
Brightness (in the dim place) |
The Best |
The
second |
The Best |
|
Hiding Application |
The Best |
The Best |
The
second |
4.What Is EX-View CCD Camera¡H
"EX-View" is a sensitivity-enhancement technology developed by
SONY to improve light sensitivity. Due to the sensitive nature of the
manufacturing process, the yield rate for EX-View CCD chips is relatively low,
limiting delivery quantities of acceptable units. The high cost associated with
the manufacturing process makes the EX-View CCD chip good for specific
applications (ex. scientific; industrial). The devices are rare for use in
conventional surveillance cameras.
5.What Is Wide Dynamic (Dynamic Range) ?
Wide dynamic camera is suitable for shooting
the license plate or installing somewhere back light.
|
 |
|
Camera
with BLC (Back Light Control) function:
Over exposure
out door image washed out |
 |
Camera
without BLC (Back Light Control) function: Under exposure
indoor image black out |
 |
| Wide dynamic camera |
6.What Is Smear Rejection Ratio ?
Strong light enter CCD sensor will penetrate the photo
resistance layer and create fag image. These image is called smear. the extend
of a CCD camera can reject strong light is called Smear Rejection Ratio.
Usual camera will create smear, but wide
dynamic camera can reject strong light.
|
 |
 |
|
Smeared image
(Usual camera) |
Image with no smear (Wide
dynamic camera) |
7.What
will affect the brightness of the infrared camera?
(1)
The amount and quality of the IR LED
(2)
CCD sensor quality:
Brightness:
SONY
EX-VIEW CCD sensor > SONY Super HAD CCD sensor >SONY CCD sensor >Panasonic CCD
sensor >Sharp CCD sensor > ¡K¡K
ex.
(3)
Sensor size:
Brightness:
1/2 sensor
size > 1/3 sensor size > 1/4 sensor size
(The bigger the better/The
bigger the more expensive)
(4)
The LUX of the camera:
Brightness:
0.1 LUX > 0.5
LUX > 1 LUX > 3 LUX > 5 LUX
(The smaller
the better/The
smaller the more expensive)
(5)
The Iris of the lens:
Brightness:
F1.2 > F1.4 >
F1.6 >F1.8 > F2.0
> F3.0 > F5.0 > F6.0
(The smaller
the better/The
smaller the more expensive)
| combination |
STD-SHP036DN Camera
+
F2.0 Fixed Focal Lens |
STD-SHP036DN Camera
+
F1.2 Manual Iris Lens |
+
 |
+
 |
| Test Picture |
 |
 |
(6)
Adaptor Voltage:
Brightness:
Overvoltage
(but the IR LED will bad soon)
>
Right Voltage
(the best)
> Undervoltage
(7)
Environment:
Brightness:
1. Indoor
(somewhere with wall) > Outdoor (open environment)
2. Camera
face the light color scenery (ex. white wall) > Camera face the dark color
scenery (ex. black wall)
Conclusion:
As the above-mentioned pictures, when we test in the dark environment, the
result of the
"STD-SHP036DN"
camera and
"STD-SN039A"
camera are very excellence.
If you use
"STD-SHP036DN"
camera or
"STD-SN039A"
camera to collocate with IR
equipment in the dark place, you can save the money for IR equipment or power
rate very much.
|
"STD-SHP036DN" SHARP
CCD Sensor Camera |
"STD-SN039A" SONY EXTRA VIEW CCD
Sensor Camera |
|
|
 |
CCTV CCD
|
+
+
