Canon EOS 90D Advanced User's Manual page 201

Maximum Burst for Continuous Shooting
If the maximum burst is displayed as "99", it indicates that you can shoot 99
o
or more shots continuously. The value starts decreasing once it reaches 98 or
less. [ buSY] display in the viewfi nder and LCD panel indicates that the internal
buff er memory is full and shooting will stop temporarily. If you stop continuous
shooting, the maximum burst will increase. After all the captured images are
written to the card, you can resume continuous shooting and shoot up to the
maximum burst listed in the table on = 615.
The approximate maximum burst is shown
on the shooting screen and in the lower
right of the viewfi nder.
Image Quality Settings
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