Monday, November 24, 2008

The Pinhole is still collecting light!

Another shot from my contraption:



What fun!

Agfa APX 100 4"x5" Sheet film, approx. f/280, 1 minute exposure, developed in HC-110 for 7 min.

Sunday, November 23, 2008

Linhof Technika III Pinhole!

A while ago I acquired a Linhof Technika III Large Format 4x5 camera - without a lens. I wanted to try LF but also was looking to resell the Camera for a profit. I had no film, and no lens- not a good start for testing out how light tight the bellows are...

I had the bright idea of taking the lens mount board and attaching a pinhole to it. This way I could accomplish my goals and try Pinhole at the same time. A little searching around got me a few sheets of donated film. I did a little research and fashioned myself a .5mm pinhole 'lens'.

When mounted on the camera, and the bellows are pulled out to about 5 1/2 inches from the film plane, it gives me an aperture of about f/280, and a field of view roughly equivalent to a 40mm lens on a 35mm camera.

Here is the camera:


and here is the negative on my small light box - a one minute exposure:


and here is the inverted image:


I shot the negative with my Canon Digital Rebel XT.

I have a couple more sheets of film, and will post those as well when they are ready - then the camera goes up for auction.

I may still make or buy a medium format pinhole - what fun!