Image Sensor
Generic image sensors
of cameras in the market are divided into CCD and CMOS. CCD (Charge Coupled
Device) is a semiconductor device, to convert optical images to digital
signals, which are extensively used in photography as a high-tech device. CMOS (Complementary Metal-Oxide Semiconductor) has an amplifier and
A/D convert-circuit for each pixel, giving a poor sensitivity due to the
photosensitive surface area of a single pixel compressed by too much surplus
equipment. Generally, it applies to products with a lower requirement of image
quality.
Shot
Normally, the lens with superior quality
can promise excellent images even in the case of weak light, while the images
of lens with inferior quality will be much worse in a dark environment. The
cameras in the market will have a huge difference in their price caused by
their shots.
Pixel
The higher cameras' pixel resolution is,
the better their image quality is.
Resolution
Resolution is the capability of analyzing
and distinguishing images of the cameras. The higher its resolution is, the
better it shows the details. Resolution of cameras is separated into two types,
photo resolution and video resolution, which mean the resolution of static
screen and dynamic screen.
Focusing
With a camera, we can adjust to the clear
by focusing the camera to achieve the best results based on different
situations.
Speed of transmission
Camera is supported by hardware in video
capture. Hence choose the cameras with a high transmission speed and a good
performance of image capture.
Interface
At present, most products use USB interface,
which is convenient to connect. In addition, its speed of data transmission is
higher and the screen-play is smoother. You're supposed to choose products with
USB2.0 interface.