Differences ccd and cmos - Digital Camera Digital Camera: Differences ccd and cmos

Friday, April 12, 2013

Differences ccd and cmos


Digital cameras became common as the decline in the selling price. One of the drivers behind the falling prices is the introduction of a CMOS sensor. CMOS sensors are much more expensive to manufacture than CCD sensors.

Both sensor CCD (charge-coupled device) and CMOS (complimentary metal-oxide semiconductor) function at which convert light into electrons. To find out how the sensor works we must know the working principle of solar cells. Think of it as the sensor used in digital cameras like having thousands and even millions of tiny solar cells in the form of a two-dimensional matrix. Each of these will sell a small portion of light transform the captured image into electrons. Both of these sensors do the work with a wide range of existing technologies.

The following step is to read the value of each cell in the image. In a CCD camera, the value is sent to the chip and an analog-to-digital converter convert each pixel's value into a digital value. In a CMOS camera, there are several transistors at each pixel that amplify and move the charge using the cable. CMOS sensor is more flexible because each pixel can be read individually.

CCDs use a special manufacturing process to create the ability to transport charge across the chip without distortion. Within the meaning of the CCD sensor the better the quality the sharpness and light sensitivity. Another case, CMOS chips are made with a more traditional way in the same way to make microprocessors. Because the manufacturing process is different, there are some fundamental differences of CCD and CMOS sensors.


  • CCD sensors, as mentioned above, high quality, low-noise images. CMOS sensor is more susceptible to noise.
  • Sensitivity CMOS is lower because each pixel has several transistors located next to it. Many photons of the transistor compared diodafoto.
  • CMOS sensors use a power source that is smaller.
  • CCD sensors use a larger power, approximately 100 times higher than CMOS sensor.
  • CMOS chips can be fabricated with standard silicon production method that is cheaper than CCD sensors.
  • CCD sensors have been mass produced for a longer period of time so it is more mature. Higher quality and more pixels.


Based on these differences, can see that CCDs tend to be used in cameras that focus on high-quality images with lots of pixels and excellent light sensitivity. CMOS sensors traditionally have lower quality, resolution and light sensitivity is lower. But at this point CMOS sensor has been developed almost equal ability CCD sensor. Cameras that use CMOS sensors are usually cheaper and longer life batteries.

Today many cheap digital camera that uses a CMOS sensor instead of CCD. What are the disadvantages and disadvantages of CMOS compared to CCD? CMOS has the advantage of low production cost so that the price is more affordable camera. While CCD has the advantage that the sensor more sensitive to light, so in dim conditions (afternoon / evening) without assistance can still mengkap flash object properly, while the CMOS is very opaque.

CCD is made with more sensitive and with high responsibility. The ISO antecedent causes most low use 200. Contrast that with the very high making noise at high ISO reply.

CMOS, is not as sensitive as CCD, with the power which a rather low mengasilkan Soft Image. contrast that with not so high, making the picture still looks good at high ISO.


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