front flash

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andrew
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front_flash.jpg


Asimple home made front flash
 
Here is another versionof a front flash for macro. It is a simple frame to hold the camera, also has 3 supabrites for use in dark shots to assist the focus
Superbrites1.jpg
 
Here is a gizmo to capture a fast movement.It operates either by sound or light.Pulling themicrophone jack out enables the light sensor. There is a flash delay in microseconds for a slightly different shot.
 
Sorry about that. forgot to paste.
This is what started me off on DIY
I have a fe
freeze_3.jpg
w more if you bear with me
 
safe_sync.jpg


Forgot to mention the disregarder counts the number of flashes
This is a batteryless safe sync
 
Well thats about it for now. As you can gather, electronics is one of my hobbys.
 
Looks good, did you design the circuits yourself?
 
It was the flash freezer that started me off. Now my box room is a wet darkroom with 2 enlargers, a workshop with an oscilloscope, power supplies, tools and vices.
 
This could be a really interesting show and tell.. it's just lacking a bit of "tell".
Any chance you could explain what these devices do.. what purpose you are using them for, how do they work.

I know you get the "This thread is useless without pics" but this thread is useless without words :D
 
leon1p said:
This could be a really interesting show and tell.. it's just lacking a bit of "tell".
Any chance you could explain what these devices do.. what purpose you are using them for, how do they work.

I know you get the "This thread is useless without pics" but this thread is useless without words :D
Click to expand...
Don`t you speak or read English in Aberdeen :lol: The freezer stops movement by firing a flash at a given time. Either sound or light activated. The disregarders ignore the first flash of the onboard flash of Canon 10d 5d or Nikon d90 allowing the second flash or third if it is set to 3 flashes to trigger the main flash. One model is for normal flashguns and the other has a jack plug to plug into the socket of the studio flash. The front twin flashes eliminate the shadows caused by camera body if the camera is close to the subject (macro). The safe sync is for use with high trigger voltage flashguns with digital cameras. this version does not use a battery.
 
Makes perfect sense to me, although the technical side of it is well beyond me...
Would you be interested in making a sound operated trigger up for me? I would need one for studio flash and one for hotshoe flash.
 
theres a joke in here some where....

what do you get if you put a balloon and a dart in the freezer.....

i think a thread written in spanish would be easier to make sense of.... however the result of the physics experiment is very cool and i wish i had the time patience and "comand of spanish" to pull off the final result
 
OK i'm getting there now.. Maybe if you gave your pictures a title us Aberdonians would be able to tell what each item is.. because I must admit I've never even heard of a disregarder never mind able to identify a DIY one. After looking at the filenames i'm slowly getting there. Maybe it's my lack of lighting experience.

So from what I can understand..
You have a homemade front flash..
The front flash would be triggered by the Freezer box
The freezer box is activated either by sound (a gun shot, impact, voice?) or flash such as built in flash? and the sensitivity is adjusted by the dial. And the flash delay is set by the other one.
The disregarded only sends a sense signal to the freezer after the set amount of flashes detected, I don't know anything about flashes so I assume you need to fire extra flashes for technique or is this to stop false triggers on AF Assist?

Don't think I'm trying to be funny.. I am genuinely interested to understand what all these gadgets do (whether or not I need them, gadgets are gadgets after all). I'm sure if you made a post for each one in detail so that people could see how they work and how you built them it would be well received.
 
foodpoison said:
No it genuinely doesn't help at all.
What the heck is a freezer and what relevance does it have to a microphone and a flashgun?
Click to expand...

To freeze covers many explanations. lets say a girl enters an old house and is confronted by a ghost. She freezes in terror, she doesn`t turn cold. She stops dead still.A flash used in a photograph stops a moving object dead still there is no blur. Will that do?
 
I'm lost!

I have never heard of a disregarder or freezer in photography terms and my electronic skills and knowledge are almost non existant.

A step by step guide with pics and full explaination of whats happening would be goodd.
 
leon1p said:
OK i'm getting there now.. Maybe if you gave your pictures a title us Aberdonians would be able to tell what each item is.. because I must admit I've never even heard of a disregarder never mind able to identify a DIY one. After looking at the filenames i'm slowly getting there. Maybe it's my lack of lighting experience.

So from what I can understand..
You have a homemade front flash..
The front flash would be triggered by the Freezer box
The freezer box is activated either by sound (a gun shot, impact, voice?) or flash such as built in flash? and the sensitivity is adjusted by the dial. And the flash delay is set by the other one.
The disregarded only sends a sense signal to the freezer after the set amount of flashes detected, I don't know anything about flashes so I assume you need to fire extra flashes for technique or is this to stop false triggers on AF Assist?

Don't think I'm trying to be funny.. I am genuinely interested to understand what all these gadgets do (whether or not I need them, gadgets are gadgets after all). I'm sure if you made a post for each one in detail so that people could see how they work and how you built them it would be well received.
Click to expand...

All of these gadgets are entirely divorced from each other. Each has a job to do .
1. to stop fast moving objects. To freeze the moment in microseconds.
2. it ignores the first flash, triggering the main flash on the second. Would you rather use the word IGNORER.
3. The two twin flashes are level with the lens front, so the subject receives the full flash.
4. Altho cameras now are getting imune from the dangers of a high trigger voltages, some older cameras must be made SAFE from this high voltage.
The front flash gadgets are the most complicated in the making of a power supply. Next, the stop the motion gadget is a bit easier to make.Then comes the "ignore the first flash" gadget quite simple really. Lastly the "Safe sync" as shown is a doddle. The main stumbling block is the procurement of the hot shoe male and female parts. They are as rare as hens teeth.They are not vital, there are ways around it. I get most of my parts from MAPLIN.
 
ASIASIsync_check.jpg


Taking a shot of the flash that the camera triggered. This checks that they are both in sync.
 
I would be interested in seeing the circuit diagram for the sound/light activated flash trigger - and a veroboard design would be even better! I'm reasonably competent with a soldering iron but electronics design is beyond me. In an ideal world, the trigger would have a variable delay (not just achieved by moving the microphone away from the sound source!) and adjustable sensitivity.
 
Nod said:
I would be interested in seeing the circuit diagram for the sound/light activated flash trigger - and a veroboard design would be even better! I'm reasonably competent with a soldering iron but electronics design is beyond me. In an ideal world, the trigger would have a variable delay (not just achieved by moving the microphone away from the sound source!) and adjustable sensitivity.
Click to expand...

And I'm interested in buying one, can someone point me in the right direction?
 
In the past, I have sent Progs and circuits to people who are ever so friendly at the start but after the work is done, not a thank you. Kinda puts you off bothering.
 
Shall I take that as a no then?
 
Thank you for that valuable contribution.
 
Nod said:
I would be interested in seeing the circuit diagram for the sound/light activated flash trigger - and a veroboard design would be even better! I'm reasonably competent with a soldering iron but electronics design is beyond me. In an ideal world, the trigger would have a variable delay (not just achieved by moving the microphone away from the sound source!) and adjustable sensitivity.
Click to expand...

http://www.hiviz.com/tools/triggers/triggers1.htm

Have a look on here it has all the schematics and part list to make a sound/light trigger with adjustable delay and sensativity
 
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