[alt-photo] Re: BW POP pinhole

[Robert Young]

B&W paper (any old RC paper is a good choice, I used some old Ilford MG III) and a pin hole camera. 

One camera was made from a pint paint can I bought at the hardware store.  It was an empty, clean can with a dark gray interior.  The only two things I did to it were to cut a 1/2" diameter hole centered on one side and securely tape from the inside a little brass shim with my pin hole.  The photo paper was cut to 4" x 10" and wrapped nearly all the way around inside the can.

I strapped the can, upside down so that water would not sit on the lid, to a post on my back-yard deck.  Uncovered the pinhole and left it alone for 3 months, December to March.  The can was quite rusty on the outside after 3 months of snow and rain.  My second use of the can failed as it rusted through.  If I was to make a new one I would paint the outside of the can with several coats of a good, enamel paint to protect the tin.

Removed the paper and simply scanned the image.  That "negative" now lives in a black plastic bag in a file cabinet.

DO NOT USE A DEVELOPER.  The paper will go 100% black.

If you do not fix the negative (no stop bath needed) it will fade back one or two stops.  You can experiment with toners to try and intensify the negative but I think in the end you will just loose the density.

You can probably get an exposure in less then 3 months, perhaps even a week if your pinhole is a little on the large size for the focal length of the camera.  

Rob



> Date: Thu, 4 Mar 2010 05:49:27 +0200
> From: mustafaumutsarac at gmail.com
> To: alt-photo-process-list at lists.altphotolist.org
> Subject: [alt-photo] Re: BW POP pinhole
> 
> I want to do this art. Do I need only fotographic paper and a pinhole camera
> ? Can I use color paper ? Do I need to develop the result or did I
> understand correctly , Do I not need to develop the paper ?
> I read somewhere saying no need to development ! Is it correct , hard to
> believe !
> What will happen the paper sees the daylight ?
> 
> Umut
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