Canon EOS 650D Instruction Manual page 125

About [Multi Shot Noise Reduction]

The following functions cannot be set: AEB, WB bracketing, [z3: Long
exp. noise reduction], 1+73/1. If any of these has already been
set, [Multi Shot Noise Reduction] cannot be set.

Flash shooting is not possible. The AF-assist beam will be emitted according to
the [54: Custom Functions (C.Fn)]'s [4: AF-assist beam firing] setting.

You cannot set [Multi Shot Noise Reduction] for bulb exposures.

If you turn off the power or change the shooting mode to a Basic Zone
mode, movie shooting, or bulb, the setting will change to [Standard].

If the images are greatly misaligned due to camera shake or if there is a
moving subject, the noise reduction effect may be minimal. moving subject, the noise reduction effect may be minimal. moving subject, the noise reduction effect may be minimal.

If you are handholding the camera, keep it steady to prevent camera If you are handholding the camera, keep it steady to prevent camera If you are handholding the camera, keep it steady to prevent camera
shake. Using a tripod is recommended.

The image alignment may not function properly with repetitive patterns The image alignment may not function properly with repetitive patterns The image alignment may not function properly with repetitive patterns
(lattice, stripes, etc.) or flat, single-tone images. (lattice, stripes, etc.) or flat, single-tone images. (lattice, stripes, etc.) or flat, single-tone images.

Recording the image to the card will take longer than with normal Recording the image to the card will take longer than with normal Recording the image to the card will take longer than with normal
shooting. During the processing of the images, "BUSY" will be displayed shooting. During the processing of the images, " shooting. During the processing of the images, "
and you cannot take another picture until the processing is completed. and you cannot take another picture until the processing is completed. and you cannot take another picture until the processing is completed.

[z3: Dust Delete Data] cannot be set.

If [Multi Shot Noise Reduction] is set, direct printing is not possible. Select a Multi Shot Noise Multi Shot Noise Reduction
setting other than [Multi Shot Noise Reduction] and perform direct printing.
If you play back a 1+73 or 1 image with the camera or print an image
If you play back a If you play back a
directly, the effect of the high ISO speed noise reduction may look minimal. directly, the effect of the high ISO speed noise reduction may look minimal. directly, the effect of the high ISO speed noise reduction may look minimal.
Check the noise reduction effect or print noise-reduced images with Digital Check the noise reduction effect or print noise-reduced images with Digital Check the noise reduction effect or print noise-reduced images with Digital
Photo Professional (provided software, p.350). Photo Professional (provided software, p.350). Photo Professional (provided software, p.350).
Long Exposure Noise Reduction
You can reduce noise in long exposures.
] cannot be set. ] cannot be set.
Reduction] is set, direct printing is not possible. Select a ] is set, direct printing is not possible. Select a
Multi Shot Noise Reduction Multi Shot Noise Reduction
1 1 73 73
+ +
1
Select [Long exp. noise
reduction].

Under the [z3] tab, select [Long
exp. noise reduction], then press
<0>.
3 Noise Reduction SettingsN
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