Hey y'all,
There are a lot of useful comments here; it's giving me a good sense of the current state of thought on the topic.
I'm curious what constitutes a 'high price' to the average person here who expressed skepticism towards the cost. It's true that when you can get ADOX b&w film for less than a $1 per 4x5", there's no way a small glass-plate outfit could beat that. But the price of that aforementioned AGFA APX 100 (about $15 per 6.5x9cm plate) is way too high in my opinion. I've done some very realistic numbers and I think I could supply 4x5" glass plates for a bit less than $4/plate, supplied in a completely archival storage box. This is taking into consideration materials, time, facilities rental and a conservative estimate of monthly sales.
The other thing I'm hearing is that archaic plate sizes are probably where the greatest market is. Afterall, how many of these cameras exist out there, with dedicated plate holders just asking for something to put in them? So far I'm hearing WHOLE PLATE; what else? If this market sounds like you, give me a sense of how you'd use such a dry-plate product.
Some of you want nothing to do with dry-plates; no worries, I can't blame you. But don't overlook the benefits of a dry-plate in the teaching of photography's most basic tenants. One of the greatest advantages of a color-blind plate is that you can develop your negatives under safe-light. I doubt that there are very many film shooters who have ever experienced such a boon. Development by inspection allows a photographer to really grasp & understand the control that is possible by manipulating that fundamental relationship between exposure & development. Furthermore, the color sensitivity issue forces you to be aware of how the final image will look when compared to the scene before you; a very real & basic lesson in 'pre-visualization'. These are my glass half full comments...
Now, the color sensitivity & speed is an interesting point. There's something slightly romantic to me about producing authentic dry-plates; which when you look at the first generation is super slow & color-blind. On the other hand, the natural progression of the dry-plate market was innovation, and this slow, color-blind, first-generation era plate would only be the beginning, if indeed there is some semblance of a market there.
The holder issue is an interesting one. For the "archaic" plate sizes, there is de facto not a plate holder issue, in fact, there's a plate issue in these formats. The holders exist but there is nothing to put in them. Does this sound accurate? For 4x5", 5x7" & 8x10" on the other hand, there is a plate holder issue. Film holders abound, but the plate holders that exist in these formats are bound to be old, falling apart and possibly expensive. I think it's clear that the most used LF camera in the world is a 4x5", so if a new plate holder could be manufactured in this size, that would remove quite a large barrier to entry. Would you say that's accurate? It's actually not so outlandish to imagine a new plate holder being manufactured... and there are hacks that can allow film holders to be used as well.
So keep the comments coming, it's all useful to me; positive or negative. I am very seriously ambitious about starting such an operation. I know I'm not going to get rich, but if there's a modest enough market to pay the rent on a darkroom space, then it allows me an opportunity to continue research into chemical photography. I think there are a lot of exciting opportunities here... more to follow... gotta run to work at the present...
Chris