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190
Technical Notes—Troubleshooting
Problem Solution
Can not select focus area.
• Unlock focus area selector.
• Closest subject priority is in eff ect.
• Monitor is on: camera in playback mode.
• Exposure meters are off : press shutter-release
button halfway.
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54
98
16
AF-assist illuminator does not light.
• Camera is in focus mode C.
• Center focus area or focus area group is not
selected or closest priority is selected for
group dynamic-area AF.
• Off selected for Custom Setting a9 (AF As-
sist).
• Illuminator has turned off automatically. Il-
luminator may become hot with continued
use; wait for lamp to cool down.
51
53,
54,
149
152
58
Full range of shutter speeds not avail-
able.
Flash in use. Flash sync speed can be selected
using Custom Setting e1 (Flash Sync Speed);
when using optional SB-800, SB-600, or SB-
R200 Speedlight, choose 1/250 s (Auto FP) for
full range of shutter speeds.
160
Focus does not lock when shutter-re-
lease button is pressed halfway.
Camera is in focus mode C: use AE-L/AF-L button
to lock focus.
56
Area shown in viewfi nder is smaller
than fi nal photo.
Viewfi nder has vertical and horizontal frame
coverage of about 95%.
—
Photos are out of focus.
• Rotate focus-mode selector to S or C.
• Camera unable to focus using autofocus: use
manual focus or focus lock.
51
56,
60
Recording time increases. Turn noise reduction off . 131
Randomly-spaced bright pixels (“noise”)
appear in photos.
• Choose lower ISO sensitivity or turn high ISO
noise reduction on.
• Shutter speed is slower than 8 s: use long ex-
posure noise reduction.
33,
131
131
Blotches appear on photos.
• Clean lens.
• Clean low-pass fi lter.
184
185
Colors are unnatural.
• Adjust white balance to match light source.
• Adjust Optimize Image settings.
35
45
Continuous shooting unavailable. Lower fl ash. 78
RAW image is not played back. Photo taken at image quality of NEF+JPEG. 28
Can not measure white balance. Subject is too dark or too bright. 41
Image can not be selected as source
for preset white balance.
Image was not created with D200. 42