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9fps TTL flash for Nikon...
Old 10-29-2005, 01:18 AM   #1 (permalink)
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...Anyone have a suggestion for a shoe-mount type flash that'll go bang on full for 9fps (keep up with D2H)? Certainly this will require an external battery pack which I'm not afraid of.

Thanks all in advance
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Re: 9fps TTL flash for Nikon...
Old 10-29-2005, 10:51 AM   #2 (permalink)
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Let me make sure I understand your question. Do you want a flash that will fire 9 times a second? If you're so close to your subject that you only use a small amount of energy stored in the flash's capacitors, any of the more powerful thyristor-equipped flash should be able to do the job. You're going to need a flash with enough storage capacity to give you illumination at a decent working distance for 9 consecutive shots.

The other way I interpreted your question is you're looking for a flash that will fire at 9fps on full power. You're going to have a problem solving that issue, due to physics. You are probably trying to transfer 160 joules or so of energy into a hot shoe-mounted flash in 1/10th. of a second without having the thing explode. It would be like attaching a drinking straw to a fire hydrant. It's not a question of the battery pack, but of the in-rush current to the capacitors.

If you're trying to solve the first question, A top-of-the-line manufacturer's flash, or something like a Metz 54 is going to be your best bet. You can get more powerful flashes, but they are bulky and/or handle-mounts. Look at a Metz 60/70 series or Quantum QFlash.

-Chip
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Re: 9fps TTL flash for Nikon...
Old 10-29-2005, 10:55 AM   #3 (permalink)
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Reckon your looking at something like an SB-800 wired up to a Quantum Turbo 2x2 possibly for that kind of work...I think thats what your looking to do


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Re: 9fps TTL flash for Nikon...
Old 10-29-2005, 02:20 PM   #4 (permalink)
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You understand the question, I was a bit vague.

Part A I have handled, the little Sigma flash that I have (roughly equal to an SB26) fires away in as long of a burst as I want at low power. No problem, as long as, like you said, I'm close.

Part B is what I'm after (more or less) - I sometimes need lots of flash power, really fast. Now, I don't *like* using flash, but the noise associated with the high ISO needed to run a fast enough shutter speed to freeze the action under tungsten sometimes borders on unnacceptable.

(no flash)
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Re: 9fps TTL flash for Nikon...
Old 10-29-2005, 02:23 PM   #5 (permalink)
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Hi Jason, I think you're probably right - see my reply to Chip for more info.

Thanks!
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Re: 9fps TTL flash for Nikon...
Old 10-29-2005, 07:04 PM   #6 (permalink)
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The most powerful flash that you can call a "shoe mount" is going to be a Quantum QFlash X4d. It has a guide number of around 160 for ISO 100, which would be f16.0 at 10' with a standard reflector. With a telephoto reflector you can get f32.0 @ 10'. That is full power. Shoot at ISO 400 and your exposure would be f32.0 @ 20' or f16.0 @ 40'. Using this flash, shooting a subject 20' away with the frame rates you're looking for is going to necessitate using an f-stop of around f1.4. And that is only going to give you 1 second's worth of light. After that the capacitors will need to recharge, so you'll be offline for about 4 seconds if you want to guarantee a full charge.

The X4d is big, bulky, and expensive. By the time you're set up and ready to roll you will spend in the neighborhood of $1000-1200 for the flash, battery pack, TTL module, and accessories. You're probably going to want a bracket to mount the thing on rather than attach it directly to your hot shoe.

If you decide to pursue this solution, I'd recommend spending a couple of days testing the thing and see if it will in fact solve your problem. Find a dealer who will accept returns if it doesn't work for you.

-Chip
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Re: 9fps TTL flash for Nikon...
Old 10-29-2005, 11:32 PM   #7 (permalink)
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Might try two flashes. That will require only half power from each, and should recharge faster. Then they might be able to keep up...


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8
Old 10-31-2005, 11:22 PM   #8 (permalink)
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[ QUOTE ]
...Anyone have a suggestion for a shoe-mount type flash that'll go bang on full for 9fps (keep up with D2H)? Certainly this will require an external battery pack which I'm not afraid of.

Thanks all in advance

[/ QUOTE ]

Shooting modes * • Single
• Continuous High [CH] - 8 fps
• Continuous Low [CL] -1 to 7 fps (programmable)
• Buffer size 50 JPEG frames, 40 NEF (RAW) frames *
• Self-Timer (programmable)
• Interval timer (Timelapse)
• Mirror lock-up (first press mirror up, second press release)

-DPreview



I couldn't resist.. [img]/ubbthreads/images/graemlins/grin.gif[/img]

JP



 
 
Re: 8
Old 10-31-2005, 11:51 PM   #9 (permalink)
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[ QUOTE ]


Shooting modes * • Single
• Continuous High [CH] - 8 fps
• Continuous Low [CL] -1 to 7 fps (programmable)
• Buffer size 50 JPEG frames, 40 NEF (RAW) frames *
• Self-Timer (programmable)
• Interval timer (Timelapse)
• Mirror lock-up (first press mirror up, second press release)

-DPreview



I couldn't resist.. [img]/ubbthreads/images/graemlins/grin.gif[/img]

JP



[/ QUOTE ]

Shooting modes * • Single
• Continuous High [CH] - 9.5 fps
• Continuous Low [CL] -1 to 8 fps (programmable)
• Buffer size 50 JPEG frames, 40 NEF (RAW) frames *
• Self-Timer (programmable)
• Interval timer (Timelapse)
• Mirror lock-up (first press mirror up, second press release)

-Nikon upgrade advisory booklet



I couldn't resist either [img]/ubbthreads/images/graemlins/wink.gif[/img]
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Re: 9fps TTL flash for Nikon...
Old 11-01-2005, 02:27 AM   #10 (permalink)
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I'm going to recommend your local electricity company to handle that much power. I don't know if there is a portable nuclear power plant yet, but it's worth a try. Just kidding. Try using multiple flashes with multiple battery packs, that might do the trick. Or maybe even one flash with two battery packs used together.

Isaiah Brink
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