Correct me if I am wrong Alex, but I am pretty much there for an Azo type paper, and pretty close to having very high quality coatings.
Very true Ron. I would be quite happy to show the prints I made with your emulsion to anyone that was sincerely interested in bringing the emulsion to the market. One cannot think of it as a direct copy of Azo; that's unrealistic for several reasons. I believe one should think of it as a contact printing emulsion, very similar in tonal characteristics to Azo, but also one that opens up many new possibilities for its employment.
One reason that it can't be considered a direct replacement for Azo is the paper base Kodak used is gone. Even if it were still available, I tend to think that hand coating on single weight paper would be arduous. However, Ron's emulsion can be coated on several different paper bases, similar to the pt/pd process. Artisic opportunities abound with this capability.
As for the issue of having a big plant. No, you don't need one to make stuff for yourself. You can supply your needs with a quite reasonable investment as long as you make LF film and paper for either contact or enlargment.
This is where what I call the "tyranny of the accountants" comes into play. True, it takes a very large enterprise, ala Kodak, Fuji et al, to produce large quantities of photo products that have extremely tight qulaity control standard. The business model of such a large corporation is extremely complex and the accountants typically "rule" when it comes to how much product must be produced in a specified time-frame for profitability. The overhead costs in a large corporation are also staggering.
A small business is far less complex. Five-year business plans are the norm. Overhead costs can be far less of a percentage. The big bugaboo these days is in complying with the plethora of regulations concerning employment, OSHA, EPA and so on. In fact, from my observations, these type of costs can break the business. So it becomes an extreme challenge. To reiterate, such an enterprise needs some very deep pockets to finance, and investors that are quite sympathetic to the cause.
If you talk about making quantity material, that too can be done at reasonable price, but as quantity goes up, variablility and quality goes down. Ever hear of someone getting a car that was a lemon? So, with a small coating machine, the size of a 2 car garage, I can coat 4x5, 120, and 35mm film with good quality but it will probably have dust or bubble defects here and there and it will vary in speed from batch to batch.
Lets look over the complaints here about EFKE film defects. They have a good staff with lots of knowledge but an aging plant. So, product varies from excellent to mediocre, if I read the posts right.
I concur with this point also. Ron further points out that his emulsion characteristcs are varying based on where they are being made. This shows the sensitivity to ambient environmental effects. Again, only the large producers can afford the technology necessary to minimize these effects. So, we are going to have to learn to live with them. To me, that is no big deal. To others, it may be hard to live with.
We are also seing variations between production batches from the small producers. Hell, even Kodak had large variations in the last runs of Azo.
I would bet that the current level of variaitons being seen today with current producers are not nearly as significant as they were in the products made a hundred years ago, or maybe even just fifty years ago.