PHOTOKNOWLEDGE – ANTI-SHAKE

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Despite autofocus it is still possible that pictures may be blurred. Often it is not the fault of the autofocus system but rather the result of camera shake. Unfortunately camera shake happens frequently and it is a particular problem when using slower shutter speeds and longer focal lengths.

However, Konica Minolta’s Anti-Shake puts things right. The high precision CCD-shift process applies a unique stabilizing mechanism. A sensor detects the degree of camera shake and the camera is able to compensate for this shake by shifting the CCD.

THE CORRECT AMOUNT OF LIGHT

To expose a picture correctly a particular amount of light is necessary. For that the camera has two possibilities to control the amount of light. Either the aperture can be changed or the exposure time can be varied.

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The Anti-Shake unit compensates

the camera shake by shifting the CCD.

 

WITHOUT ANTI-SHAKE

 

Rule of thumb to calculate the longest safe shutter

 

speed without Anti-Shake:

 

1

s

 

 

 

 

 

 

The Anti-Shake System instantly and precisely shifts the CCD

focal length (in mm)

to compensate camera motion. (Shutterspeed example picture

 

 

 

1/30 sec)

 

 

 

For example, when taking a picture with a lens of focal length 250 mm without Anti-Shake: the longest safe shutter speed is =

1/250 mm = 1/250 s