Illustration FangDou and natural FangDou optical principle

For initial contact with digital camera often will have so of confusion, namely the picture taken out is not clear, always happen double or fuzzy. Why? Except for the occasional out-of-focus (that is to focus on the outside normal camera), largely because the shutter speed caused by low. In general, in a hand-held conditions, to clear pictures taken of the shutter speed should reach the focal length countdown or even higher.

The dark take pictures, is very difficult to SONY NP-F930 Battery guarantee don't clap a virtual
The actual shooting in the hand of the photographer in film or CCD photographic/CMOS process of dithering is objective existence, prevent to guard is the only by the machine, is a special "FangDou" function to reduce because the photographer of the image of shaking hands with fuzzy.

At present, FangDou points three types: optical FangDou, photographic device (CCD) FangDou, natural FangDou (ISO FangDou).

Optical FangDou had

In a scene on the gyroscope to detect tiny mobile, and transmit the signals to microprocessor immediately the displacement calculated to be SONY NP-F970 Battery compensated, and then through the compensation, according to the camera lens groups of dithering direction and compensate the displacement, effectively overcome the vibration of the camera for the resulting image fuzzy.

Photosensitive device FangDou

The principle of the CCD FangDou is placed in a CCD can move up, down, left and right of the holder, to detect whether jitter, then sensors to detect the jitter direction, speed, mobile quantity...... Detection signal processing, calculate can sufficient to counteract the shaking CCD mobile quantity to achieve FangDou.

Panasonic and SONY FX series of the T9, T30 are optical FangDou masterpiece
Above two kinds of FangDou principle is actually similar, that is, through the camera's mechanical motion to SONY NP-F950 Battery compensate for the hands of dithering to achieve FangDou effect. At the same time, FangDou technology can also cause the imaging sharpness reduced. After all, the camera has a floating lens. The higher requirements for the photography lovers, is bad, so this also accept is why FangDou system will have a switch, users can choose cancel or open FangDou. Plus FangDou system is very low power consumption, so don't usually open FangDou switch, but to use when it open, if instant captured a moving object, may be because more than a step and miss the good opportunity.

Natural FangDou had

Natural FangDou, namely for ISO FangDou. The research direction in through the real electronic means. Namely improve ISO, improve the shutter speed to FangDou.
Because there is a security camera shutter (i.e., ensure the images are not fuzzy shutter speed), the general sense of security a shutter speed of 1/60 SEC, below the shutter speed probably shot of the image fuzzy, assuming that in the same scene of the same SONY NP-F960 Battery picture, in the exposure of the same case (the same picture is exactly the same as the environment must, as there is no doubt that the exposure), if the aperture unchanged, if improve, inevitable meeting ISO to shutter speed, so that was without improving to shutter shutter speed, safety in the case of higher ISO is likely to hit or even surpass safety shutter, natural FangDou it is through such FangDou to realize. And this FangDou effect than the other two FangDou effect even more so.

The representative of the natural FangDou is Fuji to F10, F11 F30 and as a representative of the products
Understand the above, the actual correspond to a digital camera, we may be more easy to understand.