Re: (Gum) Multi prints???

Terry,

You are the one that caused me to ask this question again. When I read the 0.7 density you mention here and on your web site, after seeing up to 1.20 from other source and from the number I got from my own test, all this got me to question the hole process. Was it because it as always been done that way or is there some logical explanation for this multiple exposure stuff.

I think I like best Toms explanation so far.

Thanks
Yves

  ----- Original Message -----
  From: TERRYAKING@aol.com
  To: alt-photo-process-l@sask.usask.ca
  Sent: Tuesday, December 13, 2005 10:41 AM
  Subject: Re: (Gum) Multi prints???

  The reason is that the ideal negative for a gum print has a d max of around 0.7. To obtain a greater range in the print you need to expose more than once. A good silver gelatine negative is best, coating the paper first with less pigment and giving it a long exposure, and more pigment and less exposure for subsequent coatings. Just get your image right in Photoshop, invert it and reverse it and then print the neg. One negative should do the job,

  There is more on my site at www.hands-on-pictures,com

  Terry

  Terry King FRPS

  RPS Historical Group (Chairman)

  www.hands-on-pictures.com/

  Moderated Discussion Group

  Post message: artaltphot@yahoogroups.co.uk

  Subscribe: artaltphot-subscribe@yahoogroups.co.uk
  Unsubscribe: artaltphot-unsubscribe@yahoogroups.co.uk

  1. An excellent thing is as rare as it is difficult.(Spinoza)
  2. A man's reach should be beyond his grasp or what's a heaven for.(Browning)
  3. Frustra fit per plura quod potest fieri per pauciora.(Occam's razor or 'Keep it simple!').
  4. Nullius in Verba (Horace), 'Take no man's word for it' (motto of the Royal Society).
  5. If ignorance is bliss, why are not more people happy ? (anon)
Received on Tue Dec 13 13:28:22 2005