Clockwork Light Meter

[cliveh]

Is it possible to make a clockwork light meter? If so, would I be the only person who may use one?

 

[Peltigera]

What would the clockwork be doing? I really cannot imagine hopw you could have such a thing.

 

[jbrubaker]

What is a clockwork light meter?

Is it possible to make a clockwork light meter? If so, would I be the only person who may use one?

 

[E. von Hoegh]

Is it possible to make a clockwork light meter? If so, would I be the only person who may use one?

Of course not.

 

[Matthew Wagg]

How on Earth would such a thing work? The old meters used Selenium cells which turned light into an electrical signal which then registers on the meter. I don't see where winding it up would come into it.

 

[E. von Hoegh]

How on Earth would such a thing work? The old meters used Selenium cells which turned light into an electrical signal which then registers on the meter. I don't see where winding it up would come into it.

You wind up the clockwork. The clockwork train turns a tiny regulated generator which supplies 2.7 volts to your LunaPro. That's about as close as you can come to a clockwork lightmeter.

 

[cliveh]

We have wind up radios, as endorsed by Nelson Mandela, so why not a wind up light meter?

 

[vpwphoto]

There was a mechanical light meter gizmo of sorts posted years ago...
http://www.nzeldes.com/HOC/Posographe.htm
(there was a url link here which no longer exists)

 

[Worker 11811]

You wind up the clockwork. The clockwork train turns a tiny regulated generator which supplies 2.7 volts to your LunaPro. That's about as close as you can come to a clockwork lightmeter.

There could also be a gear train which, when you line a pointer up to the needle, turns the exposure calculator to show the setting.

I imagine some kind of Steampunk-looking gizmo with lots of brass gears and stuff. Sort of like an Argus C3 on steroids.

Maybe something like this:
http://lh3.ggpht.com/abramsv/SAbnnw2ppxI/AAAAAAAAOog/A3AIV4qGNs8/s1600-h/steampunk6.jpg

 

[cliveh]

There could also be a gear train which, when you line a pointer up to the needle, turns the exposure calculator to show the setting.

I imagine some kind of Steampunk-looking gizmo with lots of brass gears and stuff. Sort of like an Argus C3 on steroids.

Maybe something like this:
http://lh3.ggpht.com/abramsv/SAbnnw2ppxI/AAAAAAAAOog/A3AIV4qGNs8/s1600-h/steampunk6.jpg

That sounds like what I'm looking for.

 

[Worker 11811]

You know, one of the characters in the movie, "Harry Potter," (Colin Creevey) used an Argus C3.

http://www.lomography.com/magazine/lifestyle/2011/07/14/colin-creevey-and-the-argus-c3

Just by itself, the C3 looks pretty Steampunk. With a little wood and brass cosmetics, it would be the genuine article! With a Steampunk styled light meter, it would make a perfect combo!

(Or fit right in to a HP movie. )

 

[Chan Tran]

Oh so it's a wind up meter. Doesn't need clock work with escapement.

 

[BMbikerider]

I think this post is a 'wind-up'

 

[markbarendt]

http://en.wikipedia.org/wiki/Crookes_radiometer

 

[cliveh]

http://en.wikipedia.org/wiki/Crookes_radiometer

But can you mount it on the hot shoe of your camera?

 

[E. von Hoegh]

We have wind up radios, as endorsed by Nelson Mandela, so why not a wind up light meter?

As I pointed out above, clockwork cannot by it's nature measure light. The wind up radios use the machanism I described above, or have no clockwork and the user turns the generator directly by a small crank. The actual radio is no different from any other radio deriving it's power from a chemical battery, photovoltaic battery, or mains voltage.

 

[markbarendt]

But can you mount it on the hot shoe of your camera?

Sure, got duck tape?