Canon 9128B016 ユーザーズマニュアル

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General Movie Shooting Cautions
Recording and Image Quality
 
If you use a card with a slow writing speed, a five-level 
indicator may appear on the right of the screen during 
movie shooting. It indicates how much data has not 
yet been written to the card (remaining capacity of the 
internal buffer memory). The slower the card, the 
faster the indicator will climb upward. If the indicator 
becomes full, movie shooting will stop automatically.
If the card has a fast writing speed, the indicator will 
either not appear or the level (if displayed) will hardly go upward. First, 
shoot a few test movies to see if the card can write fast enough.
 
If the indicator indicates that the card is full and movie shooting stops 
automatically, the sound near the end of the movie may not be recorded 
properly.
 
If the card’s writing speed decreases (due to fragmentation) and the 
indicator appears, formatting the CF card (p.67) or low-level formatting of 
the SD card (p.67-68) may resolve the problem.
Still Photo Shooting during Movie Shooting
 
Regarding the image quality of still photos, see “Image Quality” on page 
310.
Indicator