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Sound and other triggers



 
 
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  #1  
Old December 21st 07, 11:07 PM posted to rec.photo.digital.slr-systems
D.M. Procida
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Posts: 98
Default Sound and other triggers

I'd like to try taking photographs of such things as drops of water, or
exploding balloons.

What would you use to capture this with a digital SLR (in my case, a
Pentax K100)?

Thanks,

Daniele
  #2  
Old December 22nd 07, 01:55 AM posted to rec.photo.digital.slr-systems
Dave
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Posts: 73
Default Sound and other triggers

D.M. Procida wrote:
I'd like to try taking photographs of such things as drops of water, or
exploding balloons.

What would you use to capture this with a digital SLR (in my case, a
Pentax K100)?

Thanks,

Daniele


Here's a good site to get you started,lots of make your own stuff if
your handy,lots of advice anyway.
http://www.hiviz.com/

Dave

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  #3  
Old December 22nd 07, 02:04 AM posted to rec.photo.digital.slr-systems
[email protected]
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Posts: 29
Default Sound and other triggers

On Fri, 21 Dec 2007 23:07:16 +0000,
(D.M. Procida) wrote:

I'd like to try taking photographs of such things as drops of water, or
exploding balloons.

What would you use to capture this with a digital SLR (in my case, a
Pentax K100)?

Thanks,

Daniele


First, you need a cable remote release for the camera, and have someone check
how the contacts work, so you can use a relay.

Once you have determined that "dry" contacts can trigger the camera, you need an
audio activated switch. ("dry contact" refers to no foreign voltage present on
the contacts e.g. = a switch.)

There may be a kit available, such as the "clapper" lamp controller, or if you
can get a sensitive AC relay, you could use any audio device with a microphone
and speaker or headphone out.

You could ask on the electronic groups if someone can help you, or even build
you something.

I myself would buy a small amp kit, just a few watts, maybe from Canokit, and
fit it with a microphone and low voltage (6v) AC relay, and hook it up to a
cable release. Cost maybe $50 or so complete. You need an amp with mic
capability or the sound would have to be too loud. For a mic you just need any
cheap 'toy' you can find - else you could pay a lot!

Unfortunately, for water drops, you would need a very very good audio system!
(unless they fall on a drum!)

  #4  
Old December 22nd 07, 09:54 AM posted to rec.photo.digital.slr-systems
D.M. Procida
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Posts: 98
Default Sound and other triggers

Dave wrote:

I'd like to try taking photographs of such things as drops of water, or
exploding balloons.

What would you use to capture this with a digital SLR (in my case, a
Pentax K100)?


Here's a good site to get you started,lots of make your own stuff if
your handy,lots of advice anyway.
http://www.hiviz.com/


Thanks. It looks like I need to set the camera for a long exposure, and
then use something to trigger a flash unit.

So I guess I need, as well as a trigger kit, a flash unit which can be
triggered by a signal from a trigger.

What kind of flash unit would be suggested? I have an old flash unit
from my Praktica, but it doesn't have an input for a trigger.

Daniele
  #5  
Old December 22nd 07, 11:42 AM posted to rec.photo.digital.slr-systems
Mike Coon
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Posts: 77
Default Sound and other triggers

D.M. Procida wrote:
What kind of flash unit would be suggested? I have an old flash unit
from my Praktica, but it doesn't have an input for a trigger.

Daniele


But does it have a test button? If so then a trigger switch might be
connected there. There are also hot-shoe sockets that have a cable to
connect to old-fashioned sync sockets which might be used.

Mike.
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  #6  
Old December 22nd 07, 10:58 PM posted to rec.photo.digital.slr-systems
Dirty Harry
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Posts: 10
Default Sound and other triggers




Here's a good site to get you started,lots of make your own stuff if your
handy,lots of advice anyway.
http://www.hiviz.com/


Awesome, time to go to the electronics store!


 




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