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Forum: Flashes, Lighting, and Studio
01-23-2016, 08:37 AM
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Because the parts cost me $5 and I already have them...
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Forum: Flashes, Lighting, and Studio
01-22-2016, 05:29 PM
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Here for example he uses a potentiometer to adjust the brightness:
DIY Portable Ring Light
By increasing the resistance you are creating a lower current which then reduces the brightness of the LEDs.
(I may be totally mistaken somehow :))
I'm going to need to go do some testing now, I never knew this before.
It's for macro, so with the lens stopped down a lot, I'll probably be using shutter speeds a bit slower than that 1/100 roughly - depends on LED brightness.
Thanks for the advice (again) :)
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Forum: Flashes, Lighting, and Studio
01-22-2016, 03:47 PM
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Controlling the voltage to them would change the brightness... no?
It won't be connected to the camera in any way... so I could use 1/6000 if I wanted :D
That was the question I wanted answered most... :lol:
Thanks for your opinions.
And in case I wasn't clear this is a light that is on 'all the time' instead of a flash.
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Forum: Flashes, Lighting, and Studio
01-22-2016, 03:17 PM
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OK this might not be the best forum to ask on, but hopefully someone will help me :)
I've got 100 5mm white LEDs to make a ring light to use for macro photography, here's some questions:
How many LEDs? I was thinking around 40-ish?
Should they be wired in series or parallel?
What batteries to power it?
Potentiometer to change brightness?
Thanks for any help!
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