Reference Manual

392 Troubleshooting
Photographs and movies do not appear to have the same exposure as the preview
shown in the display: To preview the effects of changes to settings that
affect exposure and color, select On for Custom Setting d8 (Apply
settings to live view). Note that changes to Monitor brightness and
Viewfinder brightness have no effect on images recorded with the
camera.
Flicker or banding appears in movie mode: Select Flicker reduction in the
movie shooting menu and choose an option that matches the frequency
of the local AC power supply.
Bright regions or bands appear in the view through the lens: The shot is being
framed under flashing sign, flash, or other light source with brief
duration.
Smudges appear in photographs: Clean the front and rear lens elements. If the
problem persists, perform image sensor cleaning.
Bokeh is irregular: With fast shutter speeds and/or fast lenses, you may
notice irregularities in how bokeh is shaped. The effect can be mitigated
by choosing slower shutter speeds and/or higher f-numbers.
Pictures are affected by noticeable ghosting or flare: You may notice ghosting or
flare in shots that include the sun or other bright light sources. These
effects can be mitigated by attaching a lens hood or by composing shots
with bright light sources well out of the frame. You can also try such
techniques as removing lens filters, choosing a different shutter speed,
or using silent photography.
Shooting ends unexpectedly or does not start: Shooting may end automatically
to prevent damage to the camera’s internal circuits if the ambient
temperature is high or the camera has been used extensively for burst
shooting, movie recording, or the like. If you are unable to shoot because
the camera has overheated, wait for the internal circuits to cool and then
try again. Note that the camera may feel warm to the touch, but this does
not indicate a malfunction.