JoeVanCleave
07-17-2006, 03:17 PM
This image is intended as a test of a Rodenstock 105mm, f/4.5 Omegon enlarging lens, for use in a future homebuilt box camera. I used my Speed Graphic as a test platform, with a homemade lens board for the enlarging lens, fashioned from thin model aircraft plywood, and lined on the inside with black adhesive craft felt.
I also intend to use paper negatives, my usual recipe: Arista's grade 2 paper, preflashed for 5 seconds.
This image was taken in my front courtyard, under brilliant morning sun. 2 second exposure onto Arista grade 2, preflashed 5 seconds, using lens cap on the enlarging lens as a shutter. I open the lens aperture to f/4.5 for focussing and composition, then stop down all the way to f/22 for the exposure. My meter indicates 1/2 second, with an assumed EI of 6, but I can only consistently time a lens cap style shutter for 2 seconds or longer.
I've also included a second image, detail in the upper left corner of a flower bud. Not a great composition, but this lens, with paper negatives, shows promise. Attached files http://f295.f295.org/uploads/flowerpot001a_9772.jpg (http://f295.f295.org/uploads/flowerpot001a_9772.jpg)
I also intend to use paper negatives, my usual recipe: Arista's grade 2 paper, preflashed for 5 seconds.
This image was taken in my front courtyard, under brilliant morning sun. 2 second exposure onto Arista grade 2, preflashed 5 seconds, using lens cap on the enlarging lens as a shutter. I open the lens aperture to f/4.5 for focussing and composition, then stop down all the way to f/22 for the exposure. My meter indicates 1/2 second, with an assumed EI of 6, but I can only consistently time a lens cap style shutter for 2 seconds or longer.
I've also included a second image, detail in the upper left corner of a flower bud. Not a great composition, but this lens, with paper negatives, shows promise. Attached files http://f295.f295.org/uploads/flowerpot001a_9772.jpg (http://f295.f295.org/uploads/flowerpot001a_9772.jpg)