Canon Eos Rebel T6i 750d Instruction Manual

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3 Correction of Lens Peripheral Illumination and Aberrations
1Select the setting.
Check that [ Correction data 
available ] is displayed for the 
attached lens.
 Select [ Chromatic aberration ], then 
press < 0>.
 Select [ Enable], then press < 0>.
2Take the picture.
 The image will be recorded with the 
chromatic aberration corrected.
1Select the setting.
Check that [ Correction data 
available ] is displayed for the 
attached lens.
 Select [ Distortion ], then press < 0>.
 Select [ Enable], then press < 0>.
2Take the picture.
 The image will be recorded with the 
distortion corrected.
Chromatic Aberration Correction
Distortion Correction 
						

							3 Correction of Lens Peripheral Illumination and Aberrations
142
The camera already contains data for lens peripheral illumination 
correction, chromatic aberration correc tion, and distortion correction for 
approx. 30 lenses. If you select [ Enable], the peripheral illumination 
correction, chromatic aberration correc tion, and distortion correction will 
be applied automatically for any  lens whose correction data is 
registered in the camera.
With EOS Utility (EOS software), y ou can check which lenses have their 
correction data registered in the ca mera. You can also register the 
correction data for unregistered lens es. For details, refer to the EOS 
Utility Instruction Manual (p.406).
For lenses incorporating the correction data, it is not necessary to 
register the correction data to the camera.
Lens Correction Data
 When distortion correction is enabled, the camera records an image 
range narrower than the one seen through the viewfinder. (Image 
periphery will be slightly cropped and resolution slightly lowered.)
 Distortion correction will be reflected in  the captured image, but not in the 
viewfinder or Live View image during shooting.
 If you set [ Distortion ] to [Enable ], the continuous shooting speed will 
decrease.
 Distortion correction cannot be set in the < F> or < G> mode, when 
shooting a movie, or when Multi Shot Noise Reduction is set.
 Dust Delete Data (p.272) will not be appended to images recorded with 
distortion correction enabled. 
						

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3 Correction of Lens Peripheral Illumination and Aberrations
Cautions for Lens Correction
Peripheral illumination correction, chromatic aberration correction, and 
distortion correction cannot be appli ed to JPEG images already taken.
 When using a non-Canon lens, setting the corrections to [ Disable] is 
recommended, even if [ Correction data available ] is displayed.
 If you use the magnified view during  Live View shooting, the peripheral 
illumination correction and chromatic aberration correction will not be 
reflected in the image displayed on the screen.
 The correction amount will be less if the lens used does not have 
distance information.
Notes for Lens Correction
If the effect of the correction is not visible, magnify the image after 
shooting and check it again.
 Corrections can be applied even when an Extender or Life-size 
Converter is attached. 
						

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If you shoot an image with a fast shutter speed under a light source 
such as fluorescent light, the blinking  of the light source causes flicker 
and the image may be vertically  unevenly exposed. If continuous 
shooting is used under these conditions, uneven exposures or colors 
across the images may result.
With anti-flicker shooting, the camera  detects the frequency of the light 
source’s blinking and takes the pictur e when the flicker causes less 
effect on exposure or color.
1Select [Anti-flicker shoot.].
Under the [z 3] tab, select [Anti-
flicker shoot. ], then press < 0>.
2Select [Enable].
 Select [ Enable], then press < 0>.
3Take the picture.
 The image will be taken with reduced 
unevenness of exposure or color 
caused by the flicker.
3  Reducing Flicker K
When [ Enable ] is set and you shoot under a flickering light source, the 
shutter-release time lag may become slightly longer. Also, the 
continuous shooting speed may become slightly slower, and the 
shooting interval may become irregular.
 This function does not work with Li ve View shooting and movie shooting.
 In the < d> or < f> mode, if the shutter speed changes during 
continuous shooting or if you shoot multiple shots of the same scene at 
different shutter speeds, the color tone may be inconsistent. To avoid 
inconsistent color tones, use the < s> or < a> mode at a fixed shutter 
speed.
 The color tone of images shot when [ Anti-flicker shoot.] is set to 
[ Enable ] may look different from when [ Disable] is set.
 Flicker at a frequency other than 100 Hz or 120 Hz cannot be detected. 
						

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3 Reducing Flicker K
Under [ 54: Custom Functions (C.Fn) ], if you set [9: Mirror lockup] to 
[ 1: Enable], the [ Anti-flicker shoot. ] setting will automatically switch to 
[ Disable ].
 If the subject is against a dark background or if there is a bright light in 
the image, flicker may not be detected.
 Under certain special types of lighting, the camera may not be able to 
reduce the effects of the flicker even when < G> is displayed.
 Depending on the light source, flicker may not be detected properly.
 If you recompose a shot, < G> may appear and disappear 
intermittently.
 Depending on the light sources or shooting conditions, expected result 
may not be obtained even if you use this function.
Taking test shots is recommended.
 If  is not displayed in the viewfinder, under [ 52: Viewfinder 
display ], set [Flicker detection ] to [Show ] (p.63). When the camera 
reduces the effects of the flicker when you shoot, < G> will light. 
Under a light source which does not flicker, or if no flicker is detected, 
< G > will not be displayed.
 If [Flicker detection ] is set to [Show] and [ Anti-flicker shoot. ] is set to 
[ Disable ], metering under a flickering light source will cause < G> 
to blink in the viewfinder as a warning. Setting [ Enable] before shooting 
is recommended.
 In Basic Zone modes, < G> will not be displayed, but the effects of 
flicker will be reduced when you shoot.
 Anti-flicker shooting also works with flash. However, the expected result 
may not be obtained during wireless flash shooting. 
						

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The range of reproducible colors is called the color space. With this 
camera, you can set the color space for captured images to sRGB or 
Adobe RGB. For normal shooting, sRGB is recommended.
In Basic Zone modes, sRGB is set automatically.
1Select [Color space].
 Under the [z 2] tab, select [Color 
space], then press < 0>.
2Set the desired color space.
 Select [ sRGB] or [Adobe RGB ], then 
press < 0>.
This color space is mainly used for commercial printing and other 
industrial uses. This setting is not  recommended if you are not familiar 
with image processing, Adobe RGB, and Design rule for Camera File 
System 2.0 (Exif 2.21 or higher). T he image will look very subdued in a 
sRGB computer environment and with printers not compatible with 
Design rule for Camera File System 2.0 (Exif 2.21 or higher). Post-
processing of the image with computer software will therefore be 
required.
3 Setting the Color Reproduction RangeK
Adobe RGB
 If the captured still photo was shot in the Adobe RGB color space, the 
first character in the file name will be an underscore “_”.
 The ICC profile is not appended. Refer to explanations about the ICC 
profile in the Digital Photo Professional Instruction Manual (p.406). 
						

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5
Advanced Operations
In Creative Zone modes, you 
can change various settings of 
the camera as you desire to 
obtain a wide variety of 
shooting results, by selecting 
the shutter speed and/or 
aperture, adjusting the 
exposure as you prefer, etc.
The J icon at the upper right of the page title indicates that 
the function is available only  in Creative Zone modes.
After you press the shutter button halfway and let go, the 
exposure values will remain di splayed in the viewfinder for 
4 sec. ( 0) by the operation of metering timer.

For the functions settable in each shooting mode, see page 356.
The pointer icon  displayed 
together with the shutter speed, aperture 
setting, or exposure compensation 
amount indicates that you can turn the 
<
6> dial to adjust the respective setting.
c  Main Dial Pointer
     Creative Zone 
						

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The camera automatically sets the shutter speed and aperture to suit 
the subject’s brightness. This is called Program AE.
* stands for Program.* AE stands for Auto Exposure.
1Set the Mode Dial to < d>.
2Focus on the subject.
 Look through the viewfinder and aim 
the AF point over the subject. Then 
press the shutter button halfway.
 When focus is achieved, the focus 
indicator < o> on the viewfinder’s 
bottom right will light up (when in 
One-Shot AF mode).
 The shutter speed and aperture will 
be set automatically and displayed in 
the viewfinder.
3Check the display.
 A standard exposure will be obtained 
as long as the shutter speed and 
aperture display do not blink.
4Take the picture.
Compose the shot and press the 
shutter button completely.
d: Program AE 
						

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d: Program AE
 Change the ISO speed. Use the built-in flash.
To match the subject and ambient  lighting level, you can change the 
ISO speed (p.122) or use the built-in flash (p.166). In the < d> 
mode, the built-in flash will not fire automatically. Therefore, press 
the < I> (flash) button to raise the built-in flash when indoors or 
shooting in low light.
 Change the program using Program shift.
After pressing the shutter button halfway, turn the < 6> dial to 
change the shutter speed and aperture setting combination 
(program). Program shift is cancel ed automatically after the picture 
is taken. Program shift is not possible with flash.
Shooting Tips
 If the “ 30” shutter speed and the lowest f/number 
blink, it indicates underexposure. Increase the ISO 
speed or use flash.
 If the “ 4000” shutter speed and the highest f/number 
blink, it indicates overexposure. Decrease the ISO 
speed.
Differences Between < d> and < A> (Scene Intelligent Auto)In the < A> mode, many functions, such as the AF operation and metering 
mode, are set automatically to prevent  spoiled shots. The functions you can 
set are limited. With < d> mode, only the shutter speed and aperture are set 
automatically. You can freely set the AF operation, metering mode, and 
other functions (p.354). 
						

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You can either freeze the action or create motion blur with the  
(Shutter-priority AE) mode on the Mode Dial.
*< s > stands for Time value.
1Set the Mode Dial to < s>.
2Set the desired shutter speed.
See “Shooting Tips” on the next page 
for advice on setting the shutter 
speed.
 Turning the < 6> dial to the right 
sets a faster shutter speed, and 
turning it to the left sets a slower one.
3Take the picture.
 When you focus and press the 
shutter button completely, the picture 
will be taken at the selected shutter 
speed.
s: Conveying the Subject’s Movement
Blurred motion
(Slow shutter speed: 1/30 sec.) Frozen action
(Fast shutter speed: 1/2000 sec.)
Shutter Speed Display
The LCD monitor displays the shutter speed as a fraction. However, the 
viewfinder displays only the denominator. “ 05” indicates 0.5 sec. and “15 ” 
is 15 sec.