Nokia NHL-2NA Series Troubleshooting Instructions page 136

NHL-2NA
CCS Technical Documentation
Figure 8: Image which has been taken "against light". The actual object is dark.
Flicker: in some occasions a bright fluorescent light may cause flicker to be seen in the
viewfinder and captured image. This phenomena may also result if pictures are taken
indoors under mismatch of 50/60 Hz electricity network frequency. The frequency will be
detected from operator country sign information. In some very few countries, both 50
and 60 Hz networks are present and thus probability for the phenomena grows. This is
normal behavior, do not change the camera module.
Figure 9: Flicker in image of white, uniform object illuminated by strong fluorescent light
Bright light outside of image view: Especially sun can cause clearly visible 'halo' effects
and poor contrast in images. This happens due to unwanted reflections inside camera
optics. Generally this kind of reflections are common in all optical systems. This is normal
behavior, do not change the camera module.
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