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Appendix
Dust Alert is the function that detects dust adhering to the
CMOS sensor and visually displays the location of the dust.
Before cleaning the sensor, ensure that the following conditions
are met.
Attach a DA, DA L, FA J lens or a D FA, FA or F lens that has
an 9 position, and set the aperture ring to the 9 position.
Turn the capture mode selector switch to A.
Set the focus mode switch to v.
1 Select [Dust Alert] in D4 menu and press D.
The [Dust Alert] screen appears.
2 Fully display a white wall or other bright subject with
no detail in the viewfinder and press the shutter
release button fully.
After image processing is performed, the Dust Alert image
appears.
If [The operation could not be completed correctly] appears,
press E and take another picture.
3 Check the sensor for dust.
Use R to display the Dust
Alert image at full screen display.
4 Press E.
The Dust Alert image is saved and the D4 menu
reappears.
t Memo
Only the latest Dust Alert image is saved to the SD1 slot
memory card for approximately 30 minutes. If Sensor
Cleaning is performed during this 30 minutes, the Dust Alert
image can be checked while cleaning the sensor. (If the SD1
slot is disabled, the image is not saved. You cannot check the
image in playback mode.)
The focus cannot
be locked.
The autofocus
mode of Live View
is set to f.
Set [Contrast AF] to e, g,
h, or i. (p.48)
The flash does not
discharge.
The flash mode is
set to A or B.
When the flash mode is set to
A or B, the flash does not
discharge if the subject is
bright.
Change the flash mode. (p.45)
The camera is not
recognized when it
is connected
toacomputer.
The USB
connection mode
is set to [PTP].
Set [USB Connection] to [MSC]
in the D2 menu.
Dust or dirt
particles appear
in images.
The CMOS sensor
is dirty or dusty.
Activate [Dust Removal] from
the D4 menu. The Dust
Removal function can
be activated every time the
camera is turned on and off.
Refer to “Sensor Cleaning”
(p.93) if the problem persists.
Pixel defects such
as bright spots
and dark spots
appear in the
image.
There are
defective pixels
in the CMOS
sensor.
Activate [Pixel Mapping] from
the D4 menu.
It takes about 30 seconds
to correct the defective pixels,
so be sure to install a fully
charged battery.
Problem Cause Remedy
Sensor Cleaning
Detecting Dust on the CMOS Sensor (Dust Alert)
Exit
Exit
x1
x1
e_kb570_om.book Page 93 Friday, May 8, 2015 4:55 PM
95


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