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  • Hey, it's me.

  • It is late.

  • The kids were in bed, so it's time to work on the next project.

  • So this time around, we're gonna start trying to take photos of stuff being hit by bullets at the exact moment that they hit by bullets is called high speed photography.

  • Not like high speed video like you've seen on TV, but it's really within the reach of most people.

  • They just don't realize it doesn't take a lot of insanely special equipment.

  • Just it's all timing.

  • So what we're gonna do is I've got a flash unit here.

  • This is a real nice flash that my mom gave me for Christmas.

  • She gives the best presents ever, but all we're gonna do is we're gonna create a circuit or actually just put one together.

  • It's already created for us to flash this at the exact time we want to.

  • It's really not that not that hard.

  • What I've got is a bread board circuit that I bought just off the Internet.

  • I bought this one from high vis dot com HIV i z dot com and I have what's called the multi trigger.

  • It can trigger things here on sound, which I'm going to use for my rifle shot.

  • Or you could do photo gates, things like that.

  • So several different inputs, and then it'll put a delay on it.

  • You can put 20 milliseconds.

  • Let's say you're two milliseconds.

  • Whatever delay you need, you can put on after the rifle shot so that the flash will go off right when the bullet hits the target.

  • It's pretty cool, but it's not that arm.

  • So what I'm gonna do is I'm gonna show you how long it takes.

  • Thio put together the circuit.

  • Uh, I've got a Let's go into your buddy of mine.

  • Put it to get it for me already.

  • But, um, it's nothing but a lot of mechanical integrity right now, So I'm gonna take his circuit back apart, put it back together.

  • So that's a little tighter, but you know, Sorry.

  • StarLink you did a great job.

  • I promise.

  • This is what time it is now.

  • And what's that?

  • Whatever.

  • So we will see how long it takes me.

  • Thio, take this part of the O Okay.

  • I've done it.

  • Is now this o'clock whatever time that is.

  • One comment off and get on my videos, man.

  • Seems like you sure have a lot of free time.

  • I don't I just don't sleep.

  • So what we built.

  • So we have a circuit on a bread board and connected to the circuit.

  • Is that P s a transducer, which is sensitive to sound.

  • So the way this particular circuit works is I'll turn my flash on here, and, uh, any sharp sound will initiate a flash.

  • He's like that so you can adjust the sensitivity and the reset time and things like that.

  • You could even put a delay from the point of the sharp sound until you want the flash to fire.

  • You can input a delay time via couple of potential donors.

  • There's a course and find potential murder that you can adjust down and get whatever flash that you want.

  • It's got fun that connect the flash to the circuit via what's called a PC connector.

  • It's not personal computer.

  • It's actually pronto or calm poor, which is a couple of flash Cos.

  • From back in the fifties that standardized the connection to synchronize flashes two cameras over in the UK and Germany.

  • So what you do with this, you can do several things.

  • Let's say that you wanted Thio.

  • I don't take a picture of a bottle breaking, which is really hard to do to get timing right so you could get said bottle, and you could turn on lights out.

  • Open the shutter, dropped the bottle, and when the bottle hits the ground, you get a flash, and that flash will expose the shutter.

  • Excuse me.

  • Expose the chip on your DSLR and you get a really cool photo.

  • It's pretty.

  • Nothing you can do is you can vary the output on your flash.

  • This particular flash that I have has a built in exposure compensation so it will quench the flash.

  • There's a German, they major, that taught me how to do this, really, really cool.

  • This particular flash, the minimum power output it lose 121 128 of a full output flash, and I hooked it up to an Acela scope, and that is about 160 microseconds duration, which is very, very short so you can achieve shutter speeds much faster than anything your mechanic shutter on your camera can do, which is awesome.

  • The world was created with physical laws and we were put here on the surf and we have an opportunity to explore the world, explore creation.

  • Within those physical laws, all the answers are already there.

  • We gotta find him.

  • So that's what I like doing.

  • So that's it.

  • Anyway, have a good night.

  • You're whatever.

Hey, it's me.

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B1 circuit shutter delay put high speed output

High Speed photography 101 - Restoring Awesomeness to Art

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    林宜悉 posted on 2020/03/26
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