digiconvert said:Does anyone believe your superbly argued points will have any effect on 'Wiggy' ? If he is so anti film or film is dead why does he continue to post on a site devoted to film ????
DBP said:PE,
Is it reasonable to conclude from this that when the industry reaches equilibrium (and I fully do expect that to occur), the variety of emulsions will be limited by inherent minimal efficient lot sizes? I had expected so based on familiarity with other, mostly unrelated, manufacturing processes. To what degree is the efficient lot size driven by prior tooling investments as opposed to the nature of the processes.
It has been my impression that the same coating equipment is used to produce different films in emulsion batches. I presume that the actual coating equipment varies by process (i.e. b&w, E-6, C-41, and K-14). Is there more overlap than that?
I recognize that you may want to truncate or hedge your answers to the extent that they depend on proprietary data.
DBP
Photo Engineer said:One reactor can be used to make all emulsions at a given scale. One reactor must exist for each scale intended to be produced. You cannot run a reactor at half scale for example.
One machine can be used to coat all films. In this case it is more difficult, due to the difference between B&W and color. B&W only has 2 - 3 layers whereas color has up to 15 or so. This means different pump setups, speeds, and front end equipment. In addition, support changes are significant.
Therefore, setup time is very important as is shutdown or crossover between products.
In both making and coating, chemical contamination is a big issue with some products.
Solvent coated products use different equipment entirely. This includes most thermally developed products.
PE
Petzi said:On thing I learned recently is that emulsion can be bagged and refrigerated until it is melted for use. So you could make a pot of emulsion, and use it for several coating runs.
But IIRC there are also ways of preparing emulsion where you get a continuous output, as the emulsion is mixed "on the fly".
Photo Engineer said:Wiggy;
Autochromes taken during WWI were showcased recently and a URL was posted here on APUG. I'm not going to look it up for you. If you are interested you will do so for yourself. Suffice it to say, the quality was superb and that was from 100 years ago. I saw a tricolor glass slide set produced in about 1887, shown to me from the private GEH collection and it too was outstanding.
My hand coated Ilfochrome is proprietary Kodak property. If you don't believe that I did it, then thats ok with me. I know I did it, and the follow up was a long length machine coating as well, once we showed proof-of-concept from the hand coatings. It went on to become a patent on thermally processed color dye bleach. That is published, but not with pictures. Sorry. But, the formula is in the patent if you are interested.
As far as production figures and costs go, you are sadly in error. Kodak, back 10 years or more ago, ran up to 4 machines at top speed, 7 days / week and 24 hours / day. Now, they run fewer machines for fewer hours with a smaller staff. So, now it may be 2 machines insteead of 4 and they run 5 days a week. Staff were laid off, true and I feel their pain, I truly do because many are friends and neighbors. OTOH, this puts the lie to your facts as the remaining staff can still be well paid for a full work week. And, they produce film and paper in the quantity needed by the current market at a reasonable price.
The major rise in costs so far has been the rise in silver prices, and the rise in oil prices. This latter cascades down to all organic chemicals. Wages at EK have increased as expected along with those in other industries. So, not knowing how film is manufactured, you know nothing about how to cut production scale. You don't even cite some of the major problems facing EK in scaledown, because you don't know what they are.
Just as a small example, the making of an emulsion at a given rate / year becomes more difficult as consumption goes down. This is because the 'wet' emulsion and gelatin spoil just like food in a refrigerator. So, scale back is important, but making less of an emulsion is difficult due to physical and chemical properties of the process itself. This was my specialty at EK for about 15 years. You, on the other hand, have no concept of even the simplest methods of coating or emulsion making.
So, having given you an idea of how wrong you are, lets go on to digital and mention that it uses lead, arsenic, selenium, mercury and a host of chemicals that were eliminated from film years ago to make the EPA happy. Kodak is a rather 'clean' plant as chemical plants go and is cleaning up rapidly. The runoff from digital equipment dumps is becoming a major concern of landfill operators and the EPA is turning its eye on the digital fabrication industry as I type these words. Good luck digital and clean up your act.
So, Wiggy, just as you got things wrong with comments about my personal work from lack of knowledge, you have erred in your other comments about film mfg due to similar lack of knowledge. And, you have made film mfg seem more toxic by avoiding the severe problems now cropping up from digital fabrication.
Yes, film and paper production is way down, and yes a number of products are in danger of vanishing, but the information you present to support your arguments are not good enough or factual enough to support them. Sorry.
Consumer and professional analog products, both color and B&W, will be around well beyond 2008.
PE
You've left off a lot.Wigwam Jones said:I
Traffic film? I admit I didn't take that into consideration.
I have a litle trouble believing that it is a major part of Kodak, Fuji, et al's film sales, but I'll look into it. In any case, when they shut down the production lines, the people who make traffic cameras will go digital, presuming they have not already done so.
edz said:You've left off a lot.
The industry would at the drop of a hat go digital if they could. They can't right now. Its a issue of authentication. The authenticity of a picture used in traffic surveillance systems is, among other factors, defined by its membership of a physical roll. To what extent can digital data security (encryption, electronic signatures, electronic watermarks, etc.) be sufficient? Right now its not and for good reason. Electronic systems can and are being developed but their use is for the current time limited as auxilary systems with film used as the central court evidence. Once systems are developed that meet the needs and demands of the courts we will see a shift but even that shift won't be quick due to the investment costs. While in many countries the cameras needs only store the identity of the vehicle (Spain for instance) in Germany, by contrast, one must also identify the driver. This makes things (beyond all the issues of evidence) difficult and places significant demands on the digital capture systems.
Traffic film is made and sold in VERY large quantities. Municipalities purchase film by the kilometer.
Even WHEN traffic film demand goes away do to the nature of production there would still be large stockpiles left. These "rests" would be sufficient to fill quite a few cameras for many many years.
Wigwam Jones said:In the meantime, it appears I've stirred up the natives.
I have to slightly disagree - I know of at least one such surveillance system that is working totally digital, without any film anywhere, namely this one: http://www.stockholmsforsoket.se/templates/page.aspx?id=183 but that's going way off-topic on a forum like this! And it wouldn't work with film, either. Not with a 300.000+ passages a day, 5 days a week. Imagine the film costs...edz said:The industry would at the drop of a hat go digital if they could. They can't right now. Its a issue of authentication. The authenticity of a picture used in traffic surveillance systems is, among other factors, defined by its membership of a physical roll.
Photo Engineer said:At the point you describe, a full shift will still coat but at the speed required to fit the market. It is less efficient, and at that coating speed prices will being to rise accordingly, but film will not vanish. The consumer will simply observe a price increase. It will not be exorbitant, because the drive now at EK is to solve that problem NOW for that day in the future when it happens, to minimize sticker shock! You see how little you know? And how much you have to learn?
Wigwam said:
"learn me"
This isn't even proper English.
To "TEACH" you would require a lot of skill on my part, as there appears to be a lot of pre-existing bias there that must be overcome first.
Basically it involves chemistry, physics and engineering with lots of years of experience. Assuming you know all 3, even I knew that when I joined EK, but they didn't trust me with a coating machine or emulsion make. I learned for several years from a mentor to become a photo engineer before I was really ready to solo. Do you think it would take me a few minutes on APUG to teach you what took me over 30 years of lab work to acquire? This is not trivial science or engineering.
The workshops that I teach are toned down, non-chemistry versions of emulsion making bent towards the simple vs the complex but still can confound the novice. But, simply put, your arguments are naive, and being so, you are unaware of their naivete.
I'm sorry, but that is true. You sound like another person on APUG who thinks he knows photographic science. The saving grace is that you are more polite.
I say I'm a photo engineer. I'm a generalist in the field. There are specialists who are coating engineers, emulsion engineers, finish engineers, dye engineers etc etc and so forth. I myself can only give you a slight dip into these fields. More to the point, there are probably only 200 - 300 of us world-wide and we have had thousands of hours training to get there, so don't think you can teach me photo product manufacturing. More importantly, don't think you can learn it here. Sorry.
Jerevan said:I have to slightly disagree - I know of at least one such surveillance system that is working totally digital, without any film anywhere, namely this one: http://www.stockholmsforsoket.se/templates/page.aspx?id=183
but that's going way off-topic on a forum like this! And it wouldn't work with film, either. Not with a 300.000+ passages a day, 5 days a week. Imagine the film costs...
DBP said:I DO know a bit about authentication of digital files and it is a far from trivial matter. The audit controls needed to assure an auditor that a file could not
have been corrupted are expensive and hard to implement, and usually have to be applied at the point of data capture, which requires designing the traffic camera to digitally sign each photograph in a manner does cannot be falisified.
Simon, is that "last make of glass plates" as in "most recent" or "final?"Simon R Galley said:...Alfred Hugh Harman made his first glass plate in 1879...we made our last make of glass plates ( for scientific use ) last thursday...127 years later, and the process ...by and large much the same...
Simon R Galley said:Dear All,
I have read this thread with interest with valid points made on all sides..photo engineer as usual enlightening on the manufacture of photo products, he is absolutely correct only a few hundred people in the World can do it...it ai'nt easy... I have expounded before on photography as an art, art cannot die...therefore film and paper will remain in production...
, lots of consolidation and changes yes, but it certainly ai'nt going to die in two years ( so a few beers will need to be bought I think )
I leave you with this thought, the founder of ILFORD Alfred Hugh Harman made his first glass plate in 1879...we made our last make of glass plates ( for scientific use ) last thursday...127 years later, and the process ...by and large much the same...
Also we have noticed two interesting trends, digital has encouraged a higher level of image taking ( not making ) to some it becomes a passion, when you have a passion you experiment, this inevitably brinds them back to silver at some stage and we know that satisfies a creative urge in a way that digital does not ( ask anyone who prints their own work ).
..also film sales are pretty stable amongst key user groups and increasing in some, especially those who require image archiving, if you have got a negative, correctly processed and stored you are safe, you can digitise and do whatever you want, if you have not and just got a digital file the jury is most definitely out. Who, who values their images would take the risk, for a few cents and a bit of work in a darkroom.
Civilised debate is the way we all learn more, some learn they actually have a voice, some learn their voice may be stronger, but their point weaker, to contribute is not all, to listen to all....is all...
Simon Galley, ILFORD Photo, HARMAN technology Limited:
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