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Is it possible to build a flash?
Old 02-26-2005, 10:22 AM   #1 (permalink)
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CHEAPLY? I can't afford one that fits my camera. So is there a way a person can build a flash thingie?

Marty

This is my impression of a deer in the headlights look. I am thinking of copyrighting it.Then I can liscense it out to other models for a fee, Then I can afford a flash for my camera.Then I can take pictures with a real flash. And then, oopsies 10:21AM time for my meds. brb afk [img]/ubbthreads/images/graemlins/grin.gif[/img]
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Re: Is it possible to build a flash?
Old 02-26-2005, 10:59 AM   #2 (permalink)
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What is your camera? Are you looking for one that is "integrated" or will simply work with a stanard sync cord?
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Re: Is it possible to build a flash?
Old 02-26-2005, 11:12 AM   #3 (permalink)
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Building a "flash thingie" could get you killed as there's often more than 300v discharged through the flash tube when it's fired. My suggestion would be to go on ebay and find a used Vivitar 283. They can go for around $35 dollars. It takes a little bit of thinking to use them, they are not automatic with any camera, but if you can figure them out (it's not hard, but it is possile to mess up) they make a lot of light for the money.
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Re: Is it possible to build a flash?
Old 02-26-2005, 11:13 AM   #4 (permalink)
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My camera is this one. Nikon N75 tiny cutie Mine is all black And has a calculator hoozie on the back door that shows the date.
I checked that web page and found all the flashes they list, the flash page, then I went to a camera store a few hours away. They showed me some really nice ones. But OMG they are expensive. They only one not expensive was one the camera guru said was only a little more powerful than the built in one. Someone sent me a link to KEH camera. They have some nice older flashes that fit.But no one knows if it will work right with my camera correctly.
So I said Okies and now need to find a way to make my own I guess. hehe

Marty



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Re: Is it possible to build a flash?
Old 02-26-2005, 11:40 AM   #5 (permalink)
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PM sent. You'd think the camera makers could come up with a generic hook-up for flashes!
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Re: Is it possible to build a flash?
Old 02-26-2005, 12:22 PM   #6 (permalink)
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Marty,

Hmmm... You can always mount a non-Nikon flash to your camera. Problem is that the camera will not be able to communicate with the flash and therefore will not have any TTL modes.

So what do you do? Don’t worry, it’s not the end of the world and doesn’t mean that you can’t use an inexpensive but high power flash.

Most flashes built, including the highly regarded Vivitar 283, come with an auto thryster mode. This mode will allow you to select several "automatic" settings that will allow you to choose a power setting ratio (that determines the flashes range) and an appropriate aperture. To use this mode you will need to set the camera on manual and be sure to select the aperture to match the flash setting and a shutter speed that will sync with the flash - usually 1/125th sec or lower.

The drawback over your Nikon's fully automatic TTL mode is that the auto thryster on the flash is a very simple light sensor that determines the flash duration. This sensor "meters" the scene in sort of a center weighted mode, and is susceptible to metering errors.

The through the lens (TTL ) metering modes that you get with the proper camera and flash combinations allow that camera to directly meter the flash output (with a sensor in the camera) – it actually measures the light reflected from film) and determine the flash duration. This metering method is perfered over auto thryster since it is much more acurate.

Anyway, hope this helps,
Michael
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Re: Is it possible to build a flash?
Old 02-26-2005, 12:31 PM   #7 (permalink)
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Martina -

I build a lot of equipment for my job, including light sources - although, admittedly, only once a strobe light. I can promise you that it is NOT possible to build one that will work with your camera for less than the cost of a used Vivitar 283, even if you disregard the time factor - it would take consider work on your part to learn enough about the way the flash connects to the camera to be able to build it.

But are you planning to use this on YOU!?! Usually, an off camera flash is preferred. Moving the camera away from the optical axis of the film-lens-subject giaves more modeling in the shawdows AND avoids "red eye."

Have fun.
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I doubt the little capacitors. . .
Old 02-26-2005, 01:31 PM   #8 (permalink)
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in an on camera strobe will kill you. But they can make you sit up some. It's the amps that kill you not the Volts. The studio strobes on the other hand will burn a hole from ear drum to ear drum with no scenic route taken. Unless you know what you are doing keep your paws out of those things. A good Capacitor can carry a charge for years. All modern strobes have built in discharge mechanizms but if there is a reason to want to look inside who's to say that mech still functions.
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Re: I doubt the little capacitors. . .
Old 02-26-2005, 01:55 PM   #9 (permalink)
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You want to tell some one who sounds like they never picked up a soldering iron to poke around inside a flash unit go ahead, I think she'd live longer knowing they contain the ability to kill her. Amps don't really matter if the voltage crosses your heart. If you're messing around inside a flash using both hands and the cap, for what ever reason, hasn't discharged, those 300-600 volts could go exactly where they're not supposed to. Personally I think telling some one with little electronics experience to make their first project building a strobe is more dangerous than taking pictures of them holding a real, but unloaded, pistol. Just my $0.02.
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Re: I doubt the little capacitors. . .
Old 02-26-2005, 03:21 PM   #10 (permalink)
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hehe okies I wont take apart anymore flashes. I hope my hairs stops sticking straight out like this tho.

Marty

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