do you think it gets small enough for a pinhole camera? a slightly bigger one would be great for a camera obscura! for $1.25 i guess you can't go wrong!
rob > From: "Richard M. Koolish" <[email protected]> > Reply-To: pinhole-discussion@p at ??????? > Date: Thu, 17 Jan 2002 11:37:13 -0500 (EST) > To: pinhole-discussion@p at ??????? > Subject: [pinhole-discussion] variable size pinhole > > A friend showed me a gadget which might work as a variable size pinhole. > It is a surplus iris and tiny stepper motor assembly, I assume from some > kind of camera. There are three iris blades which can close completely, > or open to about 1/4 inch. When very small, the hole is triangular. > The stepper motor should probably be removed as it has detents which > try to hold the iris at certain positions, probably larger than we want. > The stepper motor has a spur gear which engages a gear sector on the iris, > or there is a lever like thing which can also change the iris. > > It is available from All Electronics for $ 1.25 each and is item > CAT# SMT-41 MINI STEPPER MOTOR/ IRIS MECHANISM. > > http://www.allelectronics.com/ > > _______________________________________________ > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??????? > unsubscribe or change your account at > http://www.???????/discussion/ >
