User Guide

Sharpness

Good quality images are 'sharp' or 'crisp', meaning that image details are

well visible in the picture. However, certain issues, such as non-idealities

in optics, cause image blurring, making objects in picture to appear 'soft'.

Each camera type typically has its own level of performance.

The effect of image taking conditions on image quality

There are some factors, which may cause poor image quality, if not taken into account by the end user when

shooting images, and thus may result in complaints. The items listed are normal to camera operation and

are not a reason for changing the camera module.

Autofocus

When the camera is focusing a lens is moved inside the module to give the sharpest possible image. This

camera module is specified to operate satisfactorily from 10 cm to infinite distance of scene objects. Trying

to photograph objects closer than 10 cm is likely to result in a blurred out of focus image. The lack of sharpness

is first visible in full resolution (1600 x 1200) images. Images taken very close to the subject, a limited depth

of focus will be visible, that is the upper or lower parts of the image may be out of focus. This is normal; do

not change the camera module.

Figure 73 Only center part of image is in focus due to limited depth of focus

RM-42

Nokia Customer Care Camera Module Troubleshooting

Page 8 –6 COMPANY CONFIDENTIAL Issue 2