Canon MACRO TWIN LITE MT-26EX-RT Basic Operation Manual page 65

CAUTION
When performing continuous flash, do not touch the flash heads,
batteries, or the area near the battery compartment.
When continuous flash or modeling flash is repeatedly fired at short intervals,
do not touch the flash heads, batteries, or the area near the battery
compartment. The flash heads, batteries, and area near the battery
compartment may become hot, resulting in the risk of burn.
Do not open or close the battery compartment cover while flash firing is
being restricted. Doing so is very dangerous since the flash firing
restriction is canceled.
Even when level 1 warning is not displayed, the firing interval will be
extended as the flash heads begins to heat up.
If level 2 warning is displayed, allow a rest time for at least 25 min.
Even if you stop flash firing after level 1 warning is displayed, level 2
warning may be displayed.
If flash photography is performed in high temperatures, the firing
restrictions may be activated before the number of flashes listed in the
table on the preceding page is fired.
For cautions on the number of flash firings, see page 7 or page 28.
The MT-26EX-RT may not fire in rare cases due to environmental factors
such as temperature rise.
When the diffuser adapter is used, the number of continuous flashes until
the warning is displayed becomes slightly fewer.
When C.Fn-22-1 is set, the warning with red illumination of the LCD
panel will not be displayed even if the temperature of the flash heads
rises.
When using Compact Battery Pack CP-E4N (sold separately), also refer
to the CP-E4N Instruction Manual.
f Flash Firing Restrictions due to Temperature Increase
29