Separate names with a comma.
Discussion in 'B&W: Film, Paper, Chemistry' started by michael_r, Nov 30, 2011.
Anyone using this?
I seem to remember a thread about this in the not to distant past. I think I read it was X-ray film.
I think this is where I was reading about it: http://www.apug.org/forums/forum42/97146-litho-film.html
It is not Xray film; it is Litho film: slow, high contrast and fun to play with. It may need to be trimmed to fit your holders since I believe it is a full 8x10. Their "Continuous Tone Duplicating Film" is Xray film duplicating film and not, in my opinion, worth the bother. I found the latter product to be so slow as to be unworkable but the litho film equal to EFKE print film in quality if not speed.
The reason I'm asking is I've been experimenting with several alternatives for making certain types of masks (where an ortho, very high contrast, very slow film is ideal). Two I'm planning on trying in the next few weeks are Rollei ATO 2.1, and Ultrafine Litho. I just received a box of 100 sheets of 4x5" ultrafine but haven't used it yet.
I'm wondering what to expect in the way of quality (emulsion defects etc), and I'm also wondering about its grain structure - ie since it is super slow, super high contrast, is it also super fine grained like a document film? I'm hoping that is the case.
You may want to mix up or buy a litho developer if you want very high contrast masks, in addition to just using the film with a standard film, or perhaps even paper developer.
I use dilute developers for masks, but it is not to make the mask high contrast per se. The reason I want a high contrast film is just for the short scale, so I can easily put most of the scale of the original negative on or past the shoulder of the lith film and then develop in a highly dilute developer.
I have found no defects so far in the box I have of 8x10. I've shot perhaps 15 sheets. since it is basically a graphic arts film, the grain structure is different. Mid-tones, where we see the grain most, tend to drop out. The edges stay very, very sharp.
Thanks for the responses.