Pentax K-500 Operating Guide

158

Sh

oo

ting

 Setting

s

5

Reduces distortions and lateral chromatic aberrations occurring due 

to lens properties.

 

Distortion

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

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. 

Lens Correction

Pincushion distortion

Barrel distortion

K-500.book  Page 158  Friday, June 14, 2013  2:29 PM