Kim Lindaberry on sat 11 dec 04
All this talk about pin hole cameras made me think about an accidental
camera obscura I encountered several years ago. I was in my house on a
fairly sunny day and I had the blinds closed which made the room fairly
dark. There was a white wall on the side of the room opposite the
window with the blinds. I was just sitting there resting for a bit and
I started looking at the light dancing on the wall which was filtering
into the room through a single small gap where the cord goes through
the blind. The light on the wall flickered and moved about and it was
kind of interesting. Then the more I looked at it the more I started to
focus on the pattern on the wall. All of a sudden I realized I was
looking at a very large image of an upside down tree swaying in the
wind, and then I noticed the house across the street projected onto the
wall too. The detail of the projection was amazing. It was an
accidental convergence of just the right conditions for me to see this
particular law of physics in action. I knew about the principle but
seeing it in action really impressed me for some reason. Maybe because
I never expected to see in my own house.
Kim
On Dec 10, 2004, at 10:56 PM, Ivor and Olive Lewis wrote:
> Dear Sue,
> There is a fantastic amount of optical science behind the working of a
> pinhole camera. Get the hole over large and the image blurs. Get it
> extra small, diffraction obliterates the image. Use two pinholes and
> there should be some unusual patterns of light and dark.
> Best regards,
> Ivor Lewis.
> Redhill,
> S. Australia.
MJ Moriarty on tue 14 dec 04
There is a photographer who has done some wonderful camera obscura
images. He turns a room into a camera obscura by sealing it off except
for a small aperture.
http://www.abelardomorell.net/camera_obscura1.html
I remember seeing an exhibit in Boston of work by a woman who has turned a
minivan into a mobile pinhole camera. I don't remember her name, but the
pictures were beautiful.
Mary Jane in Indy
| |
|
