On Sun, 02 Dec 2012 17:41:56 -0600, Tim Wescott
wrote:

On Sun, 02 Dec 2012 15:11:41 -0800, anorton wrote:

"whit3rd" wrote in message
...
On Sunday, December 2, 2012 1:53:33 PM UTC-8, axolotl wrote:
A coworker bought a view camera, and while searching for glass wants
to

take some pinhole pictures.

Get a bit of aluminum foil, fold into a stack with many layers (16 is
good).
Stab the center of the stack with a pin.

Peel off layers of the stack until the hole size is right.

Mounting the foil, and protecting it, is left as an exercise.

This is a good method for very small pinholes, but I think the OP wants
a relatively large pinhole in sturdier stock.

I dunno -- the pinhole pictures that I've taken were done in a home-made
camera (cardboard with lots of black paint and electrical tape) exposing
onto B&W print paper. Pinholes were made with a pin and aluminum foil,
and boy I wish I had know the "stack the foil" trick!

For a hand-made pinhole -- even with a pin in tin foil -- the blur spot
is going to be roughly the size of the pinhole. The exposure times --
even with real film -- are long. So a small hole is good for crisp
pictures, and you're going to have to have the camera firmly mounted
during exposure anyway.

If you want better support, make a blank out of the material of choice to
fit the camera, drill a 1/4" or so hole in the center, then tape the foil
to the blank with electrical tape. That'll give you durability, while
still leaving you with a nice tiny hole in the tin foil.

If anybody wants some...I have a small (Grin) supply of drill bits
going down to .003"

Gunner

The methodology of the left has always been:

1. Lie
2. Repeat the lie as many times as possible
3. Have as many people repeat the lie as often as possible
4. Eventually, the uninformed believe the lie
5. The lie will then be made into some form oflaw
6. Then everyone must conform to the lie