I laughed when I saw the auction the first time- it is
amazing what people will pay for some things on eBay.
If you look around, though, you can find some neat
items that make great pinhole cameras. I've picked up
a couple of the Tektronix C-5C Oscilloscope cameras &
am in the process of converting them to pinhole.

They have a few great features that work well for
pinhole: the shutter is electronic with timed speeds
from .1 to 5 seconds, as well as an open shutter
feature for longer exposures; they use the 3-1/4 x
4-1/4 pack film, so you can use the 665PN to get a
negative; they're very light; the lenses are easily
removed with just a couple of screws; and they usually
can be found for under $15!

Since there isn't an adjustable aperature you need to
put the pinhole behind the shutter. The distance from
the pinhole to the film is 90mm, so I'm using a .4mm
pinhole. According to Larry Fratkin's calculator this
results in a f-stop of 225 with 172mm of coverage. 

I've rigged an old Kodak Series V filter holder for
the front, so that I can add some warmth when using
color film. Also helps with contrast on B&W.

The only downsides to the C-5C are the lack of tripod
adapter, which I'm going to add, and the faceplate is
open- so I'm going to manufacture a plate. If the
camera comes complete with the cone that is normally
attached to the front of the oscilloscope, then you
can use that plastic to make a faceplate.

I'll take some pics & post them to my site:
http://www.speakeasy.net/~jlmoore/

John Moore
Ramona, CA

> ----- Original Message -----
> From: "George L Smyth" <glsm...@yahoo.com>
> 
>
http://cgi.ebay.com/ws/eBayISAPI.dllViewItem&item=1395685792
>
> I'm not sure that "overpriced" even begins to
> describe it. <g>
> 
> george
 


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