RM-994/ RM-995/ RM-996
Camera Module Troubleshooting
Page 108 NOKIA INTERNAL USE ONLY
Copyright © 2013 Nokia. All rights reserved.
Figure 21 Noisy image taken in +70 degrees Celsius
Phone display
If the display contrast is set too dark, the image quality degrades: the images may be very dark depending
on the setting. If the display contrast is set too bright, image contrast appears bad and "faint". This problem
is solved by setting the display contrast correctly. This is normal behavior; do not change the camera
module.
Basic rules of photography (especially shooting against light)
Because of dynamic range limitations, taking images against bright light might cause either saturated image
or the actual target appears too dark. In practice, this means that when taking an image indoors and having,
for example, a window behind the object, the result is usually poor. This is normal behavior; do not change
the camera module.
Figure 22 Image taken against light
Flicker
In some occasions a bright fluorescent light may cause flicker in the viewfinder and captured image. This
phenomenon may also be a result, if images are taken indoors under the mismatch of 50/60 Hz electricity
network frequency. The electricity frequency used is automatically detected by the camera module. In some
very few countries, both 50 and 60 Hz networks are present and thus probability for the phenomenon
increases. Flickering occurs also under high artificial illumination level. Flickering only occurs when the
rolling shutter is used. This is normal behavior; do not change the camera module.
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