Re: Teaching Pinhole to 7th graders

----- Original Message -----
From: "Beau Schwarz" <ejschwarzjr@hotmail.com>

> Does anyone have a recommendation for what paper and developer to use. I
> have also noticed some people on the list are using Ortho Lith film, what
> developers and ASA would you suggest?

I'd suggest you stick to paper for this class.

> If anyone has a fovorite site or a list of pinhole or howto sites, I sure
> could use it (you never know what a 13-14 year old will find with a random
> internet search using 'pinhole').

But I'd suggest you start at www.pinholeday.org/support

> so any refferances to aperature vs focal length,

Here: http://members.rogers.com/penate/pinsize.htm , you will also find a B&W
paper reciprocity table in it.

> paper negatives, developers

Use Ilford Multigrade and rate it as ISO3 to ISO 6
Develop in dektol 2+1 for 2 minutes

> camera ideas

Take soda pop cans, cut the top, sand the cut, paint the inside black.
http://members.rogers.com/penate/soda.jpg

Make a pinhole on the side
http://members.rogers.com/penate/pepsi.jpg

Scan the pinhole using your flat bed scanner (higher optical resolution it
allows). Zoom in on it:
http://members.rogers.com/penate/pepsix.jpg
you then can inspect and if using photoshop 6, you can even measure the pinhole
(I don't know if 5 has the measuring feature) or using my article
http://members.rogers.com/penate/diameter.htm

Make a cap for the can using 2 or 3 leyers of black garbage plastic bag, put
this on top of the cans and then wrap around and on top some duct tape.

Cut 10x18 cm pieces of B&W paper and load them in the pop-can pinhole camera
Here is a sample of an image with such camera (image made in a workshop I gave
Nov/2001):
http://members.rogers.com/penate/canimage.jpg

> I appoligize for not keeping notes, sites, or prior discussions filed for
> referance.

You don't have to, a google search would give you any site you may need and for
prior discussions, a search of this mailing list archives is all you need.

Guillermo
Received on Sat Mar 9 15:22:29 2002