Originally Posted by
Manfred M
Dan - many years ago, shortly after I got into serious photography, I was lucky enough to get to know a commercial photographer who had been hired by the school board to run my high school's audio visual department and to teach night school photography courses offered by the local Board of Education. He mentored me for about 3 years and during my last year at high school, the Board offered colour photography courses.
The chemistry had a short shelf life - some if it would last a day others up to around a week, so it would have to be thrown out before the next class. Rather than throwing it out right away. I could use the left-over chemistry after the course, but had to supply my own paper. This was a super bargain because the colour processing kits were quite expensive. Regardless, I learned both positive and negative film development as well as negative and reversal colour printing. You are correct. Compared to the cost of a modern ink jet print; I was paying about the same for a sheet of colour photographic paper then as I am today for a sheet of photo inkjet paper. I suspect the cost of the chemistry, if I had been paying for it, would be about the same as I pay for OEM ink. In the case of specialty products like Cibachrome (later Ilfochrome) paper and chemistry, it was costing me far more than what I pay now. This was in the early 1970s, so factor in the cost of inflation, the costs back then were easily an order of magnitude higher than they are today.
When it comes to people I know who use third party inks / continuous ink systems; they are producing for the low-end market (images at car or horse shows, for instance). Anyone that I know who prints their own in the fine art side or higher end portraiture market sticks to the OEM inks because they cannot afford to have clients coming back to them with fading prints that the client paid a lot of money for.