User Guide

RH-51/52, RH-67/68 Company Confidential
6(a) - Baseband Troubleshooting Nokia Customer Care
Page 40 © 2004 Nokia Corporation. Issue 3 09/2004
Amount of light available
In dim conditions the camera runs out of sensitivity. Exposure time is long (especially in
night mode) and the risk of getting shaken images grows. Image noise level grows. The
maximum exposure time in night mode is approximately ¼ seconds, so images need to
be taken with extreme care when the amount of light reflected from the target is low.
Figure 31: Shaking hands caused blurring of this image. Note geometrical barrel disortion in background.
Movement in bright light
If pictures of moving objects are taken or if the device is used in a moving car, object
’skewing’ or ‘tilting’ will occur. This phenomenon is fundamental to most CMOS cameras,
and can not be helped. Movement of camera or object will usually cause blurring in
inside or dim lighting conditions due to long exposure time.
Figure 32: Near objects in image get skewed when shooting from a moving car
Temperature
High temperatures inside the mobile phone will cause more noise to appear in images,
e.g. in +70
o
C the noise level may be very high, and it further grows if the conditions are
dim. This is also normal to camera operation. (See the following figure.)