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Format the card in the following cases:
The card is new.
The card was formatted by a different camera or a computer.
The card is full of images or data.
A card-related error is displayed (p.567).
Low-level Formatting
Perform low-level formatting if the card's writing or reading speed
seems slow or if you want to totally erase the data on the card.
Since low-level formatting will format all recordable sectors on the
card, the formatting will take longer than normal formatting.
You can stop the low-level formatting by selecting [Cancel]. Even in
this case, normal formatting will already be complete and you can use
the card as usual.
Card's file formats
SD/SDHC cards will be formatted in FAT32. SDXC cards will be
formatted in exFAT.
When shooting a movie with a card formatted in exFAT, the movie
will be recorded in a single file (instead of being split into multiple
files) even if it exceeds 4 GB. (The movie file will exceed 4 GB.)
3 Formatting the Card
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