CMOS and CCD generally have the following differences.
However, CMOS function has improved recently, there is no clear difference.
<CCD is …>
- CCD gives more natural color representation.
- Shadow image clear
- High price.
- High power consumption.
→ It is difficult to achieve high resolution with battery operated digital cameras, video cameras, etc.
(It does not much matter with USB camera for FA)
- Partial readout of the image sensor can not be performed.
→ It is impossible to increase the display speed by lowering the resolution.(Therefore, there is no resolution changes in our CCD camera GR140CCD.)
<CMOS is …>
- A little bit of blurring appears in the image and the clarity drops.
- Cheap price
- Partial readout of image sensor can be performed.
If you reduce the resolution with CMOS camera, you can raise the display speed.
- Vulnerable to movement
Distortion (deformation) and afterimage will occur. It is a weak point of CMOS such as “dropping frames” or “awkward movement”.
(It can be said to the rolling shutter type sensor in general.)
| CCD（Global shutter） | CMOS（Rolling shutter） |
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Recently, the CMOS feature of the camera used in the industry has been enhanced.
In the past,
CMOS → rolling shutter → weak motion
CCD → global shutter → strong motion
The figure was completed.
Recently, there is a type of global shutter in CMOS to replace CCD.
