Ortho Litho film with chemical speed boost: Paint mines

nicely done...
Arista Ortho Litho 3.0 Overview
Ortho Litho 3.0 from Arista is a line and halftone camera film designed for pre-press applications. As a high-contrast film, it is characterized by a very steep gradation and gradation tone, along with a wide density range with high Dmax and low Dmin values for enhanced UV transmission. For halftone, high-contrast applications, rapid access processing in ACD chemistry, such as Majestic 650, is recommended; for continuous tone use, diluted B&W paper developers are recommended for lower contrast results.

For easy handling of the film, the emulsion incorporates a dedicated layer to prevent Newton rings, as well as separate anti-static and anti-stress layers to protect against dust, scratches, and other damage. Additionally, it can be handled and processed under a red safe light.

This item is one box of 50 sheets of 3.9 x 4.9" film; this film is cut slightly smaller than actual 4 x 5" in order to be used in conventional 4 x 5" film holders.

I'd say it was worth it! Beautiful! I have some Ortho film in the freezer - just haven't had a chance to use it yet.

This film is typically 3 or maybe 6 ISO max, but the PFS-4 solution (done just before development) seems to really lift up shadows. Unfortunately had only minor effects on other brands of ortho litho film

sez on Reddit that 25 ISO ls quite possible with PFS-4.

https://www.reddit.com/r/Darkroom/comments/coezu4/first_successful_nontest_image_on_ortho_litho/

@jtk yep, that's me. lol. Might also be possible with pre/post-flashing, but in my limited testing I didn't really get the same results

This is awesome! I was wondering if you were still exploring painting on the back of ortho lith or displaying the film itself over a black background?

@Candlejack I could never find a paint that I liked for the purpose, and the front of it being so shiny makes it even harder than a super glossy print to display. The process definitely has potential but it got kinda boring to me and the ortho litho film is kind of a pain since its easy to unevenly develop and easy to scratch as well. Note that to get a positive image on a black background, you must effecrively make a film negative, not a positive!