RE: Pinhole Light Meter

I love it, its the variable lighting conditions that confuse my
students. It would be great to have an electronic shutter controlled
light metered Quaker oats camera. But seriously I think this is a
wonderful idea, I would buy on if it was smaller.

Chris

--
Pinhole Blender
chris@pinholeblender.com
http://www.pinholeblender.com
> -------- Original Message --------
> Subject: [pinhole-discussion] Pinhole Light Meter
> From: "John Fletcher" <jfl10593@bigpond.net.au>
> Date: Fri, August 04, 2006 1:03 am
> To: <pinhole-discussion@spitbite.org>
>
> Hi
>
> I have been taking Pinhole Images with a Zero 2000 Pinhole Camera for
> about 7 years.
>
> To improve the exposure accuracy of my images I have created a prototype
> specialist Light Meter especially for my Pinhole cameras. One of its
> more unusual features, and the main one I wanted, is that it integrates
> or sums incident light over the exposure time. Thus a creating perfect
> exposures in variable lighting conditions (sunsets, clouds, multiple
> flashes, etc.) . The f/stops I use are f/45, f/48, f/55, f/128, f/138,
> f/158, f/176, f/216, f/235 but they are just programmed into the
> microcontroller. Film ISO/ASA rating (ISO 3 to 8000 in 1/3 stop
> increments). I user Fuji Provia F100 which appears to have negligible
> reprocity but that could easily be programmed in.
>
> It also functions as a Timer, Normal Light Meter and via its TTL output
> and a battery powered prototype Shutter Driver I created it can control
> shutters like the ILEX No 3. Synchro Electronic Shutter (which you can
> buy off eBay for US $20) or Melles Griot 04 IES 213. I currently use it
> with a heavily customised Zero 2000 Pinhole Camera and "UltraThin"
> Melles Griot 04 UTS 203 Electronic Shutter.
>
> Here are some pictures of the functioning prototype
> http://www.flickr.com/photos/92561604@N00/sets/72157594223607004/
>
> I'm kind of wondering if it's worth taking this project further, would
> anyone else want to use such a device?
>
> All the best
>
> John
> _______________________________________________
> Post to the list as PLAIN TEXT only - no HTML
> pinhole-discussion mailing list
> pinhole-discussion@spitbite.org
> FAQ at http://spitbite.org/pinhole-discussion/list.html
_______________________________________________
Post to the list as PLAIN TEXT only - no HTML
pinhole-discussion mailing list
pinhole-discussion@spitbite.org
FAQ at http://spitbite.org/pinhole-discussion/list.html