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Well, okay, 15mL of nitric in 1 L of water is what, a ~200 mM solution? So you just make up a big bottle of that, which will be safer to work with, then you don't have to work with the concentrated stuff anymore. You can check the math... http://www.lgpnet.com/science/molarity.htm

What's the purpose of the nitric in this formula? Can you post the whole formula? If we know what it's meant to do we can probably suggest a substitute. If it's just to oxidize something then... For safety, what most of us do, who work with acids, is make a much weaker "x" molar solution...

Oh I know it's been done, but I think you will find that round and oval images fell out of favor around the time roll film was rolled out...

Kodak is agitating me a lot more than Ilford at the moment. Just saying.

Perhaps we should commission some round images and see what happens...

That's an interesting point, John; I wonder if Kodak's troubles might make Kodak cameras more collectible. Even Brownies and such.

Don't lament being too young! You can pick up amazing stuff online and play archeologist and figure out how it works. I am hoping to get one of the original telefax machines to work. I mean the drum ones that were around at the turn of the last century.

Certainly there are many exceptions, and individual compositional styles vary, but I'd like to point out that squares are often associated with more balanced, statuesque, timeless compositions. I am painting with a very broad brush, of course.

Intense. Very nice!

I wonder what people think of my pet theory that rectangles seem to correspond to dynamic compositions (implied movement and/or imbalance, sense of passing time) whereas squares tend to convey static scenes... often literally timeless and balanced compositions. Clive?

I suppose if the film is used for aerial recon then the goal might be to develop it to very high contrast. But for ordinary pictorial uses, I use common developers on the aerial films- ID11/D76, xtol and wd2d+ and such, and they all work perfectly.

How about a vacuum easel, Roger? What renewed my interest in circles, recently, was the thought of spin coating glass disks with emulsion. The mundane reason for circles being that you get a more uniform distribution of material that way. I've done some LF circles using RB lenses, e.g...

Longer rolls, a hedge against price increases, and you get a lot of exposures in a relatively compact back. Plus there are affordable vacuum backs, if that matters to you. The main concern some people have is the thinner base... although I haven't had any issue with it.

No, unless you modify the mask you get a 6x7 image. But I will do some mods when I have time and see what I can get. With a dremel tool I was able to expand the frame a bit on other backs.

All, I am thrilled to quote our colleague Simon from another thread in which I was struggling to put together a group purchase of film from another company: Since this announcement was made casually and without fanfare in the other thread, I felt it deserving of its own separate mention...

:D :D thanks for that good morning chuckle

Bless you Simon. You can count on me for 1000 ft of each.

I'm pretty sure that this is precisely what the term flauccinaucinihilipilification was invented to describe :whistling:

I would love to have a good stock of it in aerial roll form e.g. 70mm or 5" or even 9.5". I guess I didn't write to the right people though, I haven't gotten any response on my request for prices, despite seeing the stuff (70mm at least) in their catalogue.

Yes, and I'm truly sorry to have been proven right about these things many times already :( Like I said in another thread, the only sign we'll get that something is about to be discontinued is a big surge in price, and then... nothing.

Tom, I use them only for the other technique, so far, and for a little project involving negative color for which I didn't want the mask to obscure the colours. If I did use them in the darkroom, I guess I'd first shoot myself a blank c41 frame on a normal (masked) film and use that as a...

Amen to that. We just need to first assume that there is a workable solution and then work towards finding it. That is the approach of the successful problem solver. In contrast, some will simply throw up their hands and assume there is no solution unless somebody produces it right in front of...

I think we default to rectangles simply because it is so convenient. We can make rolls of film and cut them easier that way; we can cut rectangular mats and make rectangular frames more easily... unless I'm missing something, it's a choice dictated by convenience. Yet our eyes see a round(ish)...

Round. Why do we waste perfectly good image circle?? ;) I guess I will say I like 5x8. Golden something or other- books have been written on that. I really like squares too. I had a few rough thoughts on these things and put them in my APUG blog post (there was a url link here which no...

Hmm sounds nice, you are welcome to stay at my place in C'ville. In fact I and friends here could probably host quite a few apuggers.

Thanks for the good information and patience, Henning. One thing that we should probably come to terms with is the benefit of narrowing the number of films in production. This will be an uncomfortable question for some of us, but: do we really need an ISO 25, 50, 100, 400, and 3200 b&w films...

That's really terrific, very encouraging. Keep up the great work!

P.S. Here is a reference to a hydraulic ADC dating back to the 19th Century! It's actually quite a nice way to understand digital. http://www.analog.com/library/analogDialogue/archives/39-06/Chapter%201%20Data%20Converter%20History%20F.pdf I am not saying this is when digital photography...

Well.... film photography arguably begins ~1816 with Schultz ;) Of course there were non-silver methods of making images long before that. The ideas underlying digital photography arguably emerged with the invention of the fax ~1830, although that device was of course analogue. But let's be...

Wayne, if anything I would expect the Formulary to do better - I hope that they are positioning themselves appropriately. The overall trend in analogue photography is "back to the future"... more interest in those processes that existed before mass-produced roll film etc.