Quote Originally Posted by claras View Post
Thank you all for your help. This x ray film I"m using, if that is what it is, is the film from Photo Warehouse. I have gotten better results from the x ray film than from trying to control the contrast with litho film. I have also experimented with digital negatives, but I'm thinking the printer I currently have will simply not produce enough density. The Photo Warehouse film is relatively inexpensive and produces good negatives, but it is not a variable contrast material and it is, I think, a matter of dialing in exposure and development.
The real problem is that it requires somewhat long exposure, and I"m thinking that using x ray film to enlarge original negatives made for albumen will create even longer exposure. My enlarger head is already only slightly less hot than the surface of the sun .
Is there any reason why selenium toning could not be used to increase density or contrast with x ray film?
Yep, it's needs a lot of exposure. I doubled the wattage of my enlarger bulb to 150 watts (they are typically 75 watts) and my exposures are F5.6 for almost a minute (that's for an 8x10 image with a 80mm lens from a medium format neg). So the enlarger is fairly close to the easel.
I'm using straight dektol (it's usually mixed 1:3 for prints) I've also using a glass neg carrier as the exposures are long and with the brighter bulb, the negative would undoubtably warp.