Yoshizen's Blog

Make LED Ring Light (2)

While staying in my place to do some MAKE activity, still I couldn’t be house bound.

I needed to have an eye-test to make eye-glasses. (They said, it takes full one week to make it

—- Joking ! ) and I had to take my smashed camera to Canon = it was a long journey 😀

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So, I’ve been making yet another LED Ring light. This one is for 24-70mm F2.8 Lens.

I’ve shown those photos before.  A fish-tin which got right diameter has been cut and its bottom

has been cut to take 77mm filter screw (by which, it would be fixed on front of the lens.)

A Chinese room ornament which got color-changing LED light has been chosen to

make this Ring light’s outer housing. —> So, it was cut to fit fish-tin inside.

And two were Epoxy glued together. (photo middle)

And a Phenol Plastic board with copper-foil has been cut to fit inside of the housing —>

then the LEDs will be mounted to this ring. (photo right) === all those cuttings were done by

a half-round file = primitive and simple work though, it was a typical  Zen practice =

make the hand almost like a machine = no-mind (Mushin) = tool’s movement exactly match the

character / hardness of the material = Hand, Tool, Material are all in one rule = Ichijo (oneness).

To fix the Ring light on front of the Lens, instead of using its Lens-hood fixing bayonet (such as

I did on the previous Ring light for 100mm Macro Lens) was because of this lens front extends

when the Zoom was set to wide-angle (photo middle) = If the Ring light was fixed on the bayonet,

when it was zoomed to wide angle, the extended lens front would block the light in the middle.

—– And this (photo right) is the (almost) finished product.

Almost mean, I’m thinking to put power or intensity control etc.

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This LED Ring light draw 700mA current from 4xAA, N-MH Rechargeable battery

(fully charged 2500mAH battery would last more than 3 hours) through 2.2 ohm register.

= It’s mean, this Ring light has nearly 3W power = With ISO 400, and 3m distance,

the exposure would be F4 and 1/15th Second (for average subjects).

—– not too bad for a product which cost only few pounds. (without the cost of LEDs which I got

free from another equipment —– I think 30 or so LEDs wouldn’t cost more than £10 to buy).

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Through those “Make LED Light” posts, you might be realized,

how easy to make something and it would cost so little.

On top of it, you might be amazed, how anything could be utilized from fish-tin to card-board paper.

= Just remove an idiosyncratic idea and open your eyes = anything can be done by your

hand and to be creative. (Though, never expect to succeed in the first attempt = to fail first is our

nature, still we have to start from there)  😀

Be courageous. —– And Just Do It.   It would be a fun = I’ll guaranty you.

(Zen is not requisite element to make a thing.  Though, while making it, you may learn it.  🙂 )

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  1. […] photos here were taken by the DD-Pinhole with a LED ring-light.   Pinhole mean, there is no grass optics which may block the light of shorter wave length (Blue […]


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