fallfaceforward 1:16am, 14 April 2008
i was wondering if anyone could give me some tips on how to create a "trailing" effect. i want to take a picture of someone moving and have the shutter speed slowed down so that it captures the movement and creates a "trail" of the person. i have a Canon Rebel and tried just slowing my shutter speed but then the camera takes in WAY too much light and over exposes like crazy.

any tips? is this even possible?
MOD
maxcaven 10 years ago
shoot in manual mode and stop it down (make the F number bigger), shoot in lower light. You could also try neutral density filters. Also I think anything longer that maybe 4 seconds will be too much, from what I've tried people usably disappear after about 4 seconds depending on their speed.
NorthernMinnesotaPhoto 10 years ago
That's done with front and rear curtain flash. Front Curtain flash is where the strobe fires but the shutter is still open for a specified period of time (1/20 - 1 sec)

Rear Curtain, the shutter opens again for the specified period of time, then just before the shutter closes, the flash fires, stopping the motion.

This is fun with low wattage lights, a moving subject (say a Tai Kwon Doo instructor doing their Kata) The shutter opens, the camera on BULB, as the person does their Kata, they proceed about the room from position to position, as they stop the low light will capture "more" of them then when they are moving. When they finish, trip the camera and the flash with "Freeze" them in their final spot. I did this a photography student about ten years ago, in B&W. The end result will have the instructor in 8-10 positions, hands a blur, ghosting from position to position and then the final, tach sharp, image.
MOD
maxcaven 10 years ago
oh gotcha, she wants the person fully sharp and then a trail, not just a motion blur. I misunderstood.
fallfaceforward 10 years ago
SO... sweetwater- to do what you're saying i'd need to have seperate flashes then just the standard built on that came with my Canon correct?

madcow- i'll still try what you've suggested, it still might give me something i'd like. i'm just trying to fulfill a photography class "distortion" assignment
admin
HBRstudios 10 years ago
rear curtain synch is a setting on your camera that can be used with any flash or flashes that you are using.
fallfaceforward 10 years ago
oh good! then when i get home i'll go flip through my manual.
MOD
Karl W. 10 years ago
I never figured out how to use 2nd sync flash on my xt. I think you have to use one of the custom functions or something, I know it's not a standard feature you can switch. If you have like a 430ex flash that you can set to 2nd sync and get that result.
MOD
maxcaven 10 years ago
Here is a good little tutorial on rear curtain flash, or slow sync as they call it.

digital-photography-school.com/blog/slow-sync-flash/

I used to read that site religiously.
fallfaceforward 10 years ago
okay i got as far as getting my camera set up on BULB and using the flash once when i push down the shutter. this does allow me to get a very very faint trail.

i can't figure out how to get the flash to go off again when i let go of the shutter button.


but i'm learning from you guys!!!! yay!!!!
admin
HBRstudios 10 years ago
Did you find stuff in your manual about the "rear sync" flash setting? This will get the flash to fire at the END of the exposure, instead of at the front of the exposure. This can be for exposures of 1/15 second or 6 hours, it doesn't matter.

Like this: Click shutter, shutter opens, shutter stays open however long you want, flash goes off, shutter closes quickly after.

All you are doing it hitting the shutter once, just like "normal."

This would be a good thing to bring up at the strobist meeting on the 27th.
admin
manley.josh 10 years ago
Natalie: the ability to have the flash fire at the end of an exposure is in the custom function menu in your camera.

check it out in your manual.
fallfaceforward 10 years ago
thanks josh!!!

okay so... now i'm dealing with the fact that my subject(tina) is see-through and it overexposes really quickly and that you don't actual see the movement, just her in one place and then in the ending place.

sigh... perhaps i'll just have to wait until our next meeting and then someone can show me more.
admin
HBRstudios Posted 10 years ago. Edited by HBRstudios (admin) 10 years ago
You must use a dark background for optimal effect. Plus you have to play around with the shutter speed to get the effect you are looking for, but, of course, this will change the exposure as well and needs to be compensated for.

How much experience do you have with manual camera settings?
fallfaceforward 10 years ago
i haven't worked with manual settings since 10th grade photo class... so i remember nothing.


okay then, who wants to get together with me one of these next nights, let me buy them a drink, and then show me more of how to do this???

any takers??? josH???? hmm???
NorthernMinnesotaPhoto 10 years ago
yeah, but we live 130 miles north of you :?(
admin
N. Lindstrom Photo 10 years ago
My rear sync flashes at the begining and the end.
admin
JustinSinks 10 years ago
Wait? buying a drink? ill do it! lol
admin
manley.josh 10 years ago
if you wanna go to the strobist meet we can wax all smart about flashes and such.
fallfaceforward Posted 10 years ago. Edited by fallfaceforward (member) 10 years ago
i actually believe i have to work the date of the strobist meet, and i'm hoping to have it figured out by the end of this week as my assignment was due yesterday.

shark- are you free either tonight or tomorrow? i'm offering a drink in exchange for knowledge.

N8- my rear sync also flashes twice.
admin
HBRstudios 10 years ago
Flashes twice? Must be a Canon.
admin
JustinSinks Posted 10 years ago. Edited by JustinSinks (admin) 10 years ago
When ever you like. just let me know. 2185918199
Oh, and not to count myself short, you better get the knowledge first, to make sure its worth the drink! ;)
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