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I'm experiencing slow flash recycle times. What can I do to troubleshoot or speed up the flash? I'm using a Nikon D90 with an SB700.

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Ray, your un-edited question said "Why, Nikon doesn't know!" I take this to mean that you contacted them and they weren't helpful. Can you explain what you said to them and what they told you? Also, we're assuming you mean flash recycle time. Is that correct? –  mattdm Jul 6 '12 at 0:32

1 Answer 1

There are a few primary influences of cycle speed:

Batteries

You'll experience the most inconsistent recharge rates with alkaline batteries. You'll want to make sure you are using high quality batteries which can drastically improve your recharge rate and consistency throughout their charge. There is a good discussion on battery selection here.

Flash power

Too often I find people using a higher power flash setting than necessary. With the D90, you should be stepping up to 200-400 ISO to give the flash a break.

Heat

The SB700 knows to slow down if it starts to get too hot. If you're using the flash in warm temperatures or rapidly flashing at high power, the flash will begin to limit itself. This can become permanent if the flash has been brought to extreme temperatures.

Bad batteries

There have been multiple reports of NiZn batteries permanently damaging flashes. I hope you didn't use those...

Short

If there is a short in the flash somewhere, then the camera may be getting very hot in a single flash, triggering the governor that slows it down.

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Actually, fully charged alkaline battery recharge blazing fast. They just have a much quicker falloff in recharge time than other chemistries. –  rfusca Jul 6 '12 at 0:45
    
True, out the gate they are quick –  AndyML Jul 6 '12 at 0:48

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