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ctfchallenge | all galleries >> Challenge 140 - Water >> Exhibition > 3 - Spill
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March 2007 © Cat

3 - Spill

200:0409


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Canon DSLR Challenge27-Aug-2007 20:08
Thanks Aam and DB!
Aam, I know what you are talking about.
-Cat
Daniel Bollag26-Aug-2007 10:45
Wonderful image, cat: I love it! -- db.
aam1234 25-Aug-2007 15:51
Be careful with lower light output though, it could mess the WB a lot. But with your lights you shouldn't worry, they are quality ones.
Canon DSLR Challenge23-Aug-2007 14:53
Thanks for the pointers Aam. I read the thread. Nice info. It reiterated what I said. You will need 1/1000 or faster to freeze water motion.(1/300 is not predictablly enough)
You can freeze water with low output flash too (with studio strobes, use 1/8 or 1/16 power and you'll get upto 1/5000 flash duration. At full power it drops to 1/300 or lower.
Regarding sync speed, it cannot be set higher than your camera allows. I use 20D, which allows me up to 1/250 only. if I go higher, I'll get black bands on my photo (shutter-shadow) I use pocket-wizard which does not compromize the synce speed for me.
If I have to freeze motion, continuous light like sun or hmi or tungsten is best. Do not use fluorecent light (tube-lights) they have a flicker of 50-60Hz and thus are unpredictable for high speed motion. Plus while flickering the light changes color from light green to light pink too, which is bad too!
-Cat
ctfchallenge23-Aug-2007 09:13
Cat, if interested, have a look at a thread about the subject I started in another forum:

http://www.photocamel.com/forum/lighting-technique/29751-shadow-below-shutter-speed.html

These guys are experts. [aam1234]
aam1234 23-Aug-2007 09:06
Cat, shutter below the sync speed is irrelevant with strobes, because the strobes will be the effective shutter. The 1/5000 sec you mentioned is for on-camera flashes or specialized strobes.
janewigginsphotography23-Aug-2007 00:13
This is really awesome! Great job with the pp. jano
Canon DSLR Challenge22-Aug-2007 18:37
Techo/Aam, this was taken outdoors in broad daylight. So I could go up to 1/2500 (f4.5) which is excellent. With studio flash, the flash can to up to 1/5000 but the sync speed is max 1/250 for 20D, don't know if newer camera have gotten any higher or not. (note: with studio flash xf will show only what is set in the camera (1/250) )
-Cat
aam1234 22-Aug-2007 15:40
Techo, the light (strobe or flash) will act as the effective shutter. If Cat used strobes then we are talking around 1/300 sec.
ctfchallenge21-Aug-2007 15:03
Quite amazing really. Gotta love the flow.
What helped you get the shutter speed needed for this shot?

-Techo :)