So as a way to celebrate the vaster ecosystem of film photography that the graphic arts represent, I'd like to invite all of you who had experience with the analogue processes to share your experience and explain to the young ones what it meant to prepare halftone reproductions, color separation plates, etc, before the advent of CTP or RIP.
In 1969, at the age of 19, having tried and loathed office work, I got a photographic traineeship with the British Ministry of Technology in Chiselhurst, Kent, UK and made friends with a 16x20" Littlejohn process camera, which, typically of its ilk, was a giant wooden camera running on a set of rails about 20 feet long, at one end of which was a pivoting copyboard (glass plus pressure pad) about six feet square. The first hazard to negotiate was the four exposed carbon arcs used for lighting, each was rated at 30 amps, 120 V DC, and had the intrinsic feature of DC that, if you were to touch one with the palm of your hand, your hand would close over the carbon rod, you would not be able to let go, and you would be toast! The old guy I was working with used to lick the end of his finger and tap the rods if they refused to strike (light up), I found a plastic ruler safer! Every now and again, I had to do the rounds of the lights with a tube wrench and a tin bucket, unscrewing the clamps and allowing the stub residues of the burnt-out carbon rods to fall into the bucket before replacing the rods (which were about 15" long when new and burned down to about 2", with the need for regular resetting).
The camera had a single film/plate holder, this was permanently fitted with a sheet of plate glass coated with non-drying adhesive to which sheets of 16x20" film (Kodalith 3) were attached. For simple line copying, I would expose anything up to 20 sheets of film and then process them all at once in a deep dish - the resulting splashes rotted away my lab coat in an average of 4 weeks! For critical work, the lab bench had a built-in red safelight panel also 16x20", with clear perspex dishes development could be carried out by inspection. Half-tone dot negatives were made using a glass dot screen (as I recall, we used 80 dpi mostly, we also had a 120 dpi screen), this was clipped inside the back of the camera and moved back by a lever to come into contact with the film once the filmholder had been attached and the "roller-blind" sheath had been pulled back. It was some time before I was allowed to fit or remove the screen, which was treated like a holy relic!
I sometimes wish I had a wooden process camera as an ornament, otherwise I really don't miss them (or the quite outrageous health risks by modern standards) at all!
Regards,
David