Re: Darkroom light

Should be just density.
  ----- Original Message -----
  From: Dennis Johanson
  To: pinhole-discussion@pinhole.com
  Sent: Sunday, January 20, 2002 2:03 PM
  Subject: [pinhole-discussion] Darkroom light

  I am planning to make a darkroom out of a rather limited space (floor about 1 by 1,5 meters), and it seems possible to find room for the equipment necessary - but definitely not anyhing else.

  I put a yellow-green darkroom bulb in the existing wall socket and placed pieces of photo paper where I intend to have the enlarger as well as the developer tray, and covered one half of each paper (one vertically and the other diagonally in order to be able to identify them later on). Then I turned the darkroom light on for five minutes. Thereafter I developed the pieces of paper in total darkness. Unfortunately the papers had been affected by the light. Then I covered the lamp bulb by a milky-white glass globe, tested once more, and the papers came out shining white from the developer tray. So, as long as I keep the globe on everything will probably turn out fine.

  Finally, here comes what I am wondering about. Does the globe work like a filter reducing one colour and enhancing another? If so, which? Or does the milky-white globe just function like a dimmer reducing the existing yellow-green light without adding or deducting anything?

  If anyone can enlighten me I shall certainly appreciate it.

  Thanks!

  Dennis
Received on Sun Jan 20 15:35:27 2002