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04/11/2008 11:13:45 AM · #26 |
It's a flash thing.
The flash duration is really somewhere around 1/10,000s to 1/100,000s and that is what is stopping the motion.
The shutter speed is mostly irrelevant, other than ensuring it can sync with the flash pulse. You could probably shoot
these at 1/2s if you had suitably low ambient light.
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04/11/2008 11:57:33 PM · #27 |
| Just as an update, if you can get it bright enough, 1/8000th is pretty good to freeze too. I was able to do some testing in bright sunlight and the water froze pretty good. |
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04/12/2008 12:36:32 AM · #28 |
Originally posted by DrAchoo:
Just as an update, if you can get it bright enough, 1/8000th is pretty good to freeze too. I was able to do some testing in bright sunlight and the water froze pretty good. |
Yup, it'll work. That's still a lot slower than a handheld flash will give you. Studio strobes are around this slow, but a smaller handheld flash will give you better results in general and shorter durations (1/20,000-1/50,000s pulses) if you set them up correctly. |
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04/12/2008 06:28:01 AM · #29 |
Note that, if you're using flash, pushing the shutter speed beyond sync speed (High Speed Sync) is NOT a good idea, because it will in fact INCREASE the duration during which light from the flash is being emitted.
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04/12/2008 06:45:44 AM · #30 |
my water shots are all done minimum power on the sb80dx or sb800
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04/12/2008 12:39:31 PM · #31 |
I have messed with this style a little bit (a couple of years ago) using a D-50 like  IreneM, I have since not been able to duplicate any of those shots using my D-200. Seems the D50 is a bit better than the D200 for this type of photography.
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04/14/2008 08:50:54 AM · #32 |
Originally posted by Gordon:
It's a flash thing.
The flash duration is really somewhere around 1/10,000s to 1/100,000s and that is what is stopping the motion.
The shutter speed is mostly irrelevant, other than ensuring it can sync with the flash pulse. You could probably shoot
these at 1/2s if you had suitably low ambient light. |
True. I've used two flashes set to 1/16th power and stopped motion quite easily at shutter speeds below sync speed. The real challenge is getting a cool looking splash to happen.
Message edited by author 2008-04-14 09:25:03.
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04/14/2008 09:39:21 AM · #33 |
Originally posted by Brad:
Also the specific gravity of the fluid (layman = thickness) will slow down the movement (moment) to & from the apex.
Though you wuz' smart doc ;) |
I think you mean "viscosity," not specific gravity ... |
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04/14/2008 10:09:57 AM · #34 |
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