Nokia Lumia 1320 Service Manual page 104
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RM-994/ RM-995/ RM-996
Camera Module Troubleshooting
Introduction to camera module troubleshooting ................................................................................. 105
The effect of image taking conditions on image quality ...................................................................... 106
Image quality analysis ............................................................................................................................110
Possible faults in image quality ........................................................................................................... 110
Testing for dust in camera module ...................................................................................................... 111
Testing camera image sharpness ....................................................................................................... 112
Effects of dirty or defective camera lens protection window ................................................................ 113
Faulty pixels in images ....................................................................................................................... 114
Main camera, camera flash and front camera troubleshooting ............................................................115
Main camera troubleshooting ............................................................................................................. 115
Camera flash troubleshooting ............................................................................................................. 117
Front (secondary) camera troubleshooting ......................................................................................... 119
List of Figures
Figure 18 Only center part of image is in focus due to limited depth of focus .......................................... 106
Figure 19 Blurring caused by shaking hands ........................................................................................... 107
Figure 20 near objects get skewed when taking images from a moving vehicle ....................................... 107
Figure 21 Noisy image taken in +70 degrees Celsius .............................................................................. 108
Figure 22 Image taken against light ......................................................................................................... 108
Figure 23 Flicker in an image; object illuminated by strong fluorescent light ............................................ 109
Figure 24 A lens reflection effect caused by sunshine .............................................................................. 109
Figure 25 Good image taken indoors ....................................................................................................... 110
Figure 26 Good image taken outdoors .................................................................................................... 110
Figure 27 Effects of dust on optical path ................................................................................................... 111
Figure 28 Image taken with clear protection window ................................................................................ 113
Figure 29 Image taken with greasy protection window ............................................................................. 113
Figure 30 Image of point light sources taken with a clean protective window ........................................... 114
Figure 31 Image of point light sources taken with a dirty (finger print) protective window ........................ 114
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