BetterPhoto Q&A
Category: New Questions

Photography Question 
W S
 

multiple/effect flash's


 
  ONLINE EXAMPLE
ONLINE EXAMPLE
i did not take this photo
© W S
Canon EOS Digital ...
 
  MY TEST SHOT
MY TEST SHOT
aperture - 3.5, shutter - 4", lens - XTi Kit lens
© W S
Canon EOS Digital ...
 
 
hi everyone. i've been really wanting to try out something new with my photography and I came across this photo online. I really liked the look and idea of having 2 flashes in the shot giving off this star effect. i've been trying to pull it off really low budget. i'm basically running on a Canon Rebel Xti. in the photo example I have I have one Bower flash and another cheapy adorama flash linked by Pc cable to a flash activated slave. I can't get it to work right tho because I can't get my pop-up flash to be a slow sync flash or and open flash. I basically have to go down to a really slow shutter about 2" and then set the extra flashes off a second time using a point and shoot digital camera. does anyone have any solutions they can offer being that i'm on a realllllllly tight student budget. THANKS!


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2/7/2008 6:14:23 PM

 
W.   
Every point-shaped lightsource in your image can have that, or some other star effect if you apply star effect filters:
http://www.cokin.com/ico3-p1-5.html


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2/7/2008 6:42:46 PM

 
W S   thanks for the advice on the filter!
but any ideas on how to get the flashes syncing properly. thats still a pretty big nuisance.


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2/7/2008 7:45:20 PM

 
Andy 
BetterPhoto Member Since: 5/28/2002
  W.S. It's not that easy to mix and match multiple flash units using Canon's digital cameras. Take a look here:

http://photonotes.org/articles/eos-flash/index2.html#slave

Hope this helps.


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2/8/2008 6:07:50 AM

 
W.   
WS,

you don't need flashguns for this, so they don't need to be synced either.
You need "point-shaped lightsources", i.o.w. virtually every normal light/lamp.

Have fun!


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2/8/2008 6:56:47 AM

 
Jon Close
BetterPhoto Member Since: 5/18/2000
  The built-in flash of the XTi works in E-TTL only, which means is has a preflash before the shutter opens that is uses for metering. The pre-flash is activating your slave trigger before the shutter opens. Use instead "digital" slave triggers that will ignore this preflash and properly sync with the main flash when the shutter opens.

Check if you can the aperture used on the sample pic that isn't yours. Stopping down to smaller apertures (larger f-number) will give star effect to point light sources without resorting to special effects filters. Additionally, you're getting very bad ghosting/flare reflections in your shot that are caused by (a) a UV filter that you should take off, and (b) the flashes are pointed directly into the lens where in the sample photo they are set wider apart and pointed at the subject.


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2/8/2008 8:12:07 AM

 
Samuel Smith
BetterPhoto Member Since: 1/21/2004
  this looks like one flash that reflected off the glass of the framed photos behind him.geeeez.


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2/8/2008 10:42:52 PM

 
W S   Thanks a lot as an update i've been experimenting some more. and although I have realized that the Xti shoots off a series of preflashes while on AF before actually shooting. on manual focus it will just fire the main flash and take the exposure. what i've noticed tho is if I fire a flash using the * button on the camera THEN take a normal flash photo on MF the camera then catches the external flashes.

Thank you JON C. on the UV filter and the aperture advice. I DID have a UV filter and a Polarizer on as well.


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2/9/2008 9:50:33 PM

 
Samuel Smith
BetterPhoto Member Since: 1/21/2004
  your kidding!
inside you had a uv and cp on your lens?
really?ahhhyhhhh. some will believe.


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2/9/2008 11:41:49 PM

 
W S   yeah I had been out shooting that day and when I got around to taking these test shots with my brother it was late and it was almost his bed time so I suppose I had overlooked taking off the filters.


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2/9/2008 11:49:32 PM

 
Samuel Smith
BetterPhoto Member Since: 1/21/2004
  these are not star effect.these are like straight on 2.8 shots with on camera flash.it's opened up,close to ghosting.
what was the color of the lone rangers white horse named silver?
xti,point and shoot,filters and at least 2 flash units and filters and your on a really tight budget?
no i'm fine,sam


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2/11/2008 10:43:10 PM

 
W.   
Come on, Sam, you know Derek when you see him, don't you?


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2/12/2008 7:57:23 PM

 
Samuel Smith
BetterPhoto Member Since: 1/21/2004
  well no.without understanding I can't mark anyone off a list.yet I suppose your right.my apologies.a forum.


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2/13/2008 11:50:22 PM

 
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