Canon MT-26EX-RT Macro Twin Lite - Manual (Page 110)

110
When continuous flash or modeling flash is repeatedly fired in short
intervals, the temperature of the flash heads, batteries, and the area
near the battery compartment may increase.
When you perform firing repeatedly, the firing interval increases in
steps within the range of up to approx. 20 sec. to avoid degrading
or damaging the flash heads due to overheating. When you
perform firing repeatedly even more in this state, flash firing is
restricted automatically.
Furthermore, when flash firing is restricted, a warning icon is
displayed to indicate the increase in temperature, and the firing
interval (with which the flash photography can be performed) will
be automatically set to approx. 8 sec. (level 1) or approx. 20 sec.
(level 2).
As the internal temperature of the flash unit increases, the warning is
displayed in two levels. When you perform continuous firing repeatedly
even more in the state in level 1, the state changes to level 2.
The following table shows the number of continuous flashes until the
warning (level 1) is displayed, and the necessary rest time (guideline)
until normal flash photography can be performed.
f Flash Firing Restrictions due to Temperature Increase
Temperature Increase Warning
Display
Level 1
(Firing interval:
Approx. 8 sec.)
Level 2
(Firing interval:
Approx. 20 sec.)
Icon
e f
LCD panel illumination Red (lit) Red (blinking)
Number of Continuous Flashes and Rest Time
Function
Number of Continuous
Flashes to Reach Level 1
Warning (Guideline)
Necessary Interval
Time (Guideline)
Continuous full output
flash (p.17)
Modeling flash (p.34)
48 times or more 25 min. or longer