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<blockquote data-quote="Joseph Bautsch" data-source="post: 11896" data-attributes="member: 654"><p>Hi and welcome to the Nikonites Community. Sorry about your problem with the SB900. What you are describing, as indicated by Kaizen, happens when using the unit in rapid fire sequence whether it's in FP mode or fast single shutter releases over an extended period of time. The temperature shutdown is not a problem but a safety device to prevent damage to the unit. The constant discharge and recharging of the capacitor generates a lot of heat that causes the unit to shut down. A lot of units are designed so that you can't fire that fast to prevent it from overheating. This Nikon flash unit will allow a rapid fire for short bursts but not over an extended period of time. Continued sue of this flash in that manner will cause severe damage. You can increase the ISO as Kaizen suggests and it will give you more shots before it boils over again but that probably won't help that much. My suggestion with the SB900 is to develop a slower shooting technique or buy one of the other Nikon flash units they don't rapid fire like the SB900 will. Hope this helps.</p></blockquote><p></p>

[QUOTE="Joseph Bautsch, post: 11896, member: 654"] Hi and welcome to the Nikonites Community. Sorry about your problem with the SB900. What you are describing, as indicated by Kaizen, happens when using the unit in rapid fire sequence whether it's in FP mode or fast single shutter releases over an extended period of time. The temperature shutdown is not a problem but a safety device to prevent damage to the unit. The constant discharge and recharging of the capacitor generates a lot of heat that causes the unit to shut down. A lot of units are designed so that you can't fire that fast to prevent it from overheating. This Nikon flash unit will allow a rapid fire for short bursts but not over an extended period of time. Continued sue of this flash in that manner will cause severe damage. You can increase the ISO as Kaizen suggests and it will give you more shots before it boils over again but that probably won't help that much. My suggestion with the SB900 is to develop a slower shooting technique or buy one of the other Nikon flash units they don't rapid fire like the SB900 will. Hope this helps. [/QUOTE]

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