Nikon SB-500 AF Speedlight - Manual (Page 26)

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Operation
Notes on Continuous Use
Notes on continuous flash firing
• To prevent the SB-500 from overheating, allow it to cool down for
at least 10 minutes after the number of firings indicated below.
Flash control mode Firing limit
i-TTL flash control
Manual flash control (output volume: M 1/1, M 1/2)
Up to 15 times
Manual flash control (output volume: M 1/4–M 1/128) Up to 40 times
• When continuous flash firing is repeated in quick succession, the
internal safety function extends the recycling time.
• If flash firing continues, it may be temporarily suspended. The
internal safety function is deactivated and flash firing becomes
available after cooling down for several minutes. (
0 F-9)
• The condition in which the internal safety function is activated
differs depending on the SB-500 output level and the ambient
temperature.
• The condition in which the internal safety function is deactivated
differs depending on the ambient temperature.