Pentax 10916 用户手册

153

5

Reduces distortions and lateral chromatic aberrations occurring due to 
lens properties.



Distortion is a phenomenon in which the center of the image appears 
inflated (barrel distortion) or the center of the image appears pinched 
(pincushion distortion). Distortion occurs more easily when using a 
zoom lens or a small diameter lens, and straight walls or the horizon in 
an image appear curved. 



Lateral chromatic aberration is a phenomenon in which the 
magnification of an image varies according to the colors (wavelengths 
of light) when a picture was taken, and may cause a blurred image. 
Chromatic aberration occurs more easily at shorter focal lengths. 

Pincushion distortion

Barrel distortion