Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 240)

240
Noise Reduction Settings
Cautions for Setting Multi Shot Noise Reduction
o If there is signifi cant misalignment in the image due to camera shake, the
noise reduction eff ect may become smaller.
o If you are handholding the camera, keep it steady to prevent camera shake.
Using a tripod is recommended.
o If you shoot a moving subject, the moving subject may leave afterimages.
o Auto image alignment may not function properly with repetitive patterns (lattice,
stripes, etc.) or fl at, single-tone images.
o If the subject’s brightness changes as the four consecutive shots are taken,
irregular exposure in the image may result.
o After shooting, it may take some time to record an image to the card after
performing noise reduction and merging the images. “ buSY ” appears in the
viewfi nder and on the LCD panel as images are processed, and shooting is
not possible until processing is fi nished.
o [Multi Shot Noise Reduction] is not available with bulb shooting, shooting
with AEB or WB bracketing, shooting RAW or RAW+JPEG images, or with
features such as long exposure noise reduction, multiple exposures, or HDR
mode.
o Flash photography is not possible. Note that the AF-assist beam of
EOS-dedicated, external Speedlites will be emitted according to the
[ z : AF-assist beam fi ring] setting.
o [Multi Shot Noise Reduction] is not available (not displayed) when recording
movies.
o Automatically switches to [Standard] if you set the power switch to <
2
>,
replace the battery or card, switch to a Basic Zone or <
F
> shooting mode, or
switch to movie recording.