Canon Eos Rebel T4i 650d Instruction Manual

221
3 Appending Dust Delete Data N
3Photograph a solid-white object.
 At a distance of 20 cm - 30 cm (0.7 ft. 
- 1.0 ft.), fill the viewfinder with a 
patternless, solid-white object and 
take a picture.
X
The picture will be taken in aperture-
priority AE mode at an aperture of f/22.
  Since the image will  not be saved, the 
data can still be obtained even if there 
is no card in the camera.
X
When the picture is taken, the camera 
will start collecting the Dust Delete 
Data. When the Dust Delete Data...

222
Dust that could not be removed by the automatic sensor cleaning can 
be removed manually with a blower,  etc. Before cleaning the sensor, 
detach the lens from the camera.
The surface of the image sensor  is extremely delicate. If the 
sensor needs to be cleaned directly, having it done by a Canon 
Service Center is recommended.
1Select [Sensor cleaning].
  Under the [ 53] tab, select [Sensor 
cleaning], then press < 0>.
2Select [Clean manually].
  Select [Clean manually], then press 
.
3Select...

223
3 Manual Sensor Cleaning N
 While cleaning the sensor, never  do any of the following. If the 
power is cut off, the shutter will  close and the shutter curtains and 
image sensor may get damaged.
•  Setting the power switch to < 2>.
•  Opening the battery compartment cover.
•  Opening the card slot cover.
  The surface of the image  sensor is extremely delicate. Clean the sensor 
with care.
  Use a plain blower without any brus h attached. A brush can scratch the 
sensor.
  Do not insert the blower...

COPY  

225
Wireless FlashPhotography
You can use the built-in flash 
for wireless flash shooting.
The camera’s built-in flash  can work as a master unit 
with Canon Speedlites with  a wireless slave feature and 
wirelessly trigger the Sp eedlite(s) to fire.
Canceling the slave unit’s auto power off
To cancel the slave unit’s auto power off, press the 
camera’s < A> button. If you are using manual flash 
firing, press the slave unit’s te st firing (PILOT) button to 
cancel the auto power off.
Be sure to also...

226
Regarding your Speedlite (slave unit), refer to its instruction manual and 
set it as follows. The settings othe r than the ones below for the slave 
unit’s control are all set with the  camera. Different types of Canon 
Speedlite slave units can be used and controlled together.
(1) Set the Speedlite as a slave unit.
(2) Set the Speedlite’s transmission channel to the same channel 
as set on the camera. *
1
(3) If you want to set the flash ratio  (p.232), set the slave unit ID.
(4)Position the camera...

227
The basics of easy, fully automatic wireless flash shooting are explained 
below.
Steps 1 to 4 and 6 apply to all 
wireless flash shooting. Therefore, 
these steps are omitted in the other 
wireless flash setups explained on 
the pages hereafter.
1Press the  button to raise the 
built-in flash.
  For wireless flash shooting, be sure 
to raise the built-in flash.
2Select [Flash control].
 Under the [ z1] tab, select [Flash 
control ], then press < 0>.
3Select [Evaluative].
  For [ E-TTL II meter. ],...

228
Easy Wireless Flash Shooting
4Select [Built-in flash settings].
 Select [Built-in flash settings ], then 
press < 0>.
5Select [EasyWireless].
  Under [Built-in flash ], select 
[EasyWireless ], then press .
6Set [Channel].
  Set the transmission channel (1-4) to 
the same one as the slave unit.
7Take the picture.
 Set the camera and take picture in 
the same way as with normal 
shooting.
8Exit the wireless flash shooting.
 For [ Built-in flash ], select 
[NormalFiring ].
 Setting [ E-TTL II meter. ]...

229
Easy Wireless Flash Shooting
You can have multiple slave units fire as if they were a single Speedlite. 
This is convenient when you need a large flash output.
Basic settings:
Flash mode : E-TTL II
E-TTL II meter. : Evaluative
Built-in flash : EasyWireless
Channel : (Same as slave units)
All the slave units will fire at the same 
output and be controlled to obtain a 
standard exposure.
No matter what the slave ID is (A, B, or 
C), all the slave units will fire as one 
group.
If the flash exposure...

230
This section describes fully automatic 
wireless flash shooting with one external 
Speedlite and the built-in flash.
You can change the flash ratio between 
the external Speedlite and built-in flash 
to adjust how the shadows look on the 
subject.
On the menu screens, the  and 
< 1 > icons refer to the external 
Speedlite, and the < 3> and < 2> 
icons refer to the built-in flash.
1Select [CustWireless].
  Follow step 5 on page 228 to select 
[CustWireless ], then press .
2Select [Wireless func.]....