Canon EOS R50 Mirrorless Camera (White) - Manual (Page 259)

Caution
Precautions on Multi Shot Noise Reduction
If there is significant misalignment in the image due to camera shake, the noise
reduction effect may become smaller.
Be careful about camera shake in handheld shots. Using a tripod is recommended.
If you shoot a moving subject, the moving subject may leave afterimages.
Auto image alignment may not function properly with repetitive patterns (lattice,
stripes, etc.) or flat, single-tone images.
If the subject's brightness changes as the four consecutive shots are taken,
irregular exposure in the image may result.
After shooting, it may take some time to record an image to the card after
performing noise reduction and merging the images. “
BUSY ” is displayed as
images are processed, and shooting is not possible until processing is finished.
[
Multi Shot Noise Reduction ] is not available with any of these features: bulb
exposures, AEB, WB bracketing, RAW/RAW+JPEG, long exposure noise
reduction, HDR mode/HDR PQ settings, focus bracketing or Creative filter
shooting.
Flash photography is not available. Note that the AF-assist beam of Speedlites may
be fired, depending on the [
: AF-assist beam firing ] setting.
The camera automatically switches to [ Standard ] when RAW or RAW+JPEG
image quality is set.
Automatically switches to [
Standard ] if you set the power switch to < >,
replace the battery or card, or switch to Basic Zone modes, bulb exposure, or
movie recording.
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