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#51
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Tom Phillips wrote:
Tom Phillips wrote: Donald Qualls wrote: But, just as an interested amateur, much less a professional scientist or engineer, could easily create an optical system to view or project a photograph even if the very idea of photography has been lost to time, It's called a pinhole and has been a scientific phenomenon known since about 300 BC when Aristotle first described it. About 400 years ago some smart people added optical glass (lenses) and before we knew Kodak did it in reverse and created the slide projector. BTW, the "very idea of photography" is just as basic a phenomenon of science as the pinhole. Digital, OTOH, is a phenomenon of technology. I'm being somewhat facetious of course, so before anyone points it out yes I know slides were invented and projected prior to Kodak carrousels :-) In fact, "magic lanterns" predated transparent photographic medium (such as glass plates) by a few years; there were hand painted and even animated (puppets between glass) lantern slides that date back to the Daguerreotype era, when the only way to copy a photograph was to rephotograph it... -- I may be a scwewy wabbit, but I'm not going to Alcatwaz! -- E. J. Fudd, 1954 Donald Qualls, aka The Silent Observer Lathe Building Pages http://silent1.home.netcom.com/HomebuiltLathe.htm Speedway 7x12 Lathe Pages http://silent1.home.netcom.com/my7x12.htm Opinions expressed are my own -- take them for what they're worth and don't expect them to be perfect. |
#52
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A recent experience will illustrate my point about photos as historical
records. While on a vacation in San Miguel de Allende recently, I visited a photo gallery where one of the exhibits was a display of about 25 16X20 silver prints made from 19th-century glass-plate negatives. These plates were discovered in an attic in California when the photographer died and his heirs were cleaning out his stuff. Recognizing them as potentially important because they were made in the area around San Miguel (Guanajuato state) at the time of Mexican independence and the execution of Maximilian, they eventually had them restored for printing. Digital technology was very useful in the restoration. Since the gallery has been exhibiting these prints, according to the owner, thousands of Mexicans from the surrounding region, from all socio-economic classes and walks of life have flocked to see this rare and heretofore unknown record of the places, landscape, and events from an important time in their history. The value of those photos as part of the country's patrimony was immediately recognized. The young gallery assistant, a Mexican woman, laughingly told me that she had always thought that old Hollywood western movies that depicted Mexican banditos wearing those ludicrously high-pointed sombreros had been a typical gringo "put-down" of Mexicans, until she saw these photos in which most of the Mexican farmers were wearing exactly that sort of (to her) extremely ridiculous hats. "They really did wear those things!" she exclaimed. Were the photos great art? They were well-crafted and well-seen, but their essential value was and is documentary, not unlike the photographs of Timothy Sullivan of the old West. Point is, useful as digital technology was in cleaning up the old glass plate negs, had the originals been digital images, I doubt whether anyone would now even know about them, much less have the satisfaction of the knowledge of the past that those silver prints represent. |
#53
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Lloyd Usenet-Erlick wrote:
On Sat, 02 Oct 2004 21:46:06 -0400, The Wogster wrote: ... For me, I don't care, it's easier to download a photo, then to soup films, and it's easier to balance it, and post process in PhotoShop, and print on inkjet, then it is to spend the day in the fume room, making test prints. One issue, if you know the fume room, it's easier to learn about digital. Same process, different methodology. ... oct604 from Lloyd Erlick, If it's 'the fume room', there is something wrong. A regular old darkroom need not smell, let alone have 'fumes'. Probably people who use digital printers operate them correctly. That type of image making should be compared to a correctly operated darkroom, if comparisons are to be made. As far as I know, it's been called that for years, probably since the early days of photography, when noxious materials like mercury vapours were used with wet plates. Some of the chemicals actually smell okay, except stop bath, I can't stand the smell of vinegar. But did recently see that Ilford has an odourless stop bath, so things are looking up. Once you have a monitor and printer balanced to the same colour, there is much less testing that needs to be done, then with AgBr prints. I do understand there are enlarger exposure meters, but have never tried one. W |
#54
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Lloyd Usenet-Erlick wrote:
On Sat, 02 Oct 2004 21:46:06 -0400, The Wogster wrote: ... For me, I don't care, it's easier to download a photo, then to soup films, and it's easier to balance it, and post process in PhotoShop, and print on inkjet, then it is to spend the day in the fume room, making test prints. One issue, if you know the fume room, it's easier to learn about digital. Same process, different methodology. ... oct604 from Lloyd Erlick, If it's 'the fume room', there is something wrong. A regular old darkroom need not smell, let alone have 'fumes'. Probably people who use digital printers operate them correctly. That type of image making should be compared to a correctly operated darkroom, if comparisons are to be made. As far as I know, it's been called that for years, probably since the early days of photography, when noxious materials like mercury vapours were used with wet plates. Some of the chemicals actually smell okay, except stop bath, I can't stand the smell of vinegar. But did recently see that Ilford has an odourless stop bath, so things are looking up. Once you have a monitor and printer balanced to the same colour, there is much less testing that needs to be done, then with AgBr prints. I do understand there are enlarger exposure meters, but have never tried one. W |
#55
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Donald Qualls wrote:
The Wogster wrote: Fact is, nobody knows how long it takes nature to break down the molecules in polyester or acetate. It may be 100 years it may be 100,000,000 the key is that it does start to break down at some point, and that point is so far an unknown. They thought plastic buttons from the 1900's would last forever too, until museums had to replace them because the buttons were deteriorating, and affecting the garments they were attached to. If the buttons were "plastic" from the 1900s, they're celluloid, the same unstable stuff that ate so many of the early Hollywood films as it decomposed in storage. Completely different from acetate and polyester. Yes, I agree, no one is certain of the breakdown time of polyester and acetate film bases (other than that polyester is likely longer); these materials are both so durable that other than a few bad batches and in cases of long-term solar UV exposure, they haven't broken down significantly in the 30-40 years they've been available. However, based on the earliest examples known, they look to be competitive with paper for longevity (and likely better in some environments, since they aren't food for bacteria or fungi as cellulose is). We have many-many examples of paper up to 5000 years old. Suppose they invented a new memory next week, that allowed you to store 500 exabytes (87 262 827 images from a Canon digital rebel in Raw format) would last as long as the planet does, and never become corrupted, even when at ground zero under a Hydrogen bomb. You probably still not be satisfied. I doubt anyone could prove the ground zero claim or the longevity (they said something similar about CDs when they came out, remember? "Won't skip like a record, and will last centuries!" and then they found out the aluminum coating oxidizes between the plastic layers and the things can become unreadable in a matter of 10-20 years in normal storage; I heard one skipping on radio within a few months of the stations starting to play them). The capacity would be wonderful, but it's still not human readable. I think the big resistance to digital in photography, is precisely that the analog format is, to some degree human readable. Other media, like audio, which always was encoded (either magnetically or as a long line of vibrations on a disk), hasn't had the same degree of issue. During this whole thread, I have been playing devils advocate, I still shoot film. Currently I shoot, then get the film processed and scanned, then process digitally from that point. I see no real reason to go completely digital other then you can see the results immediately. Heck a box of film chemistries and a film scanner, and I can see my results in an hour as well. IMO, and we might just have to agree to disagree, the box of old pictures is much better off, in the hands of someone cleaning the attic, than the box of old computer media. And if the pictures are B&W on silver gelatin, either prints or negatives, they're likely to still be in reasonably good shape even 200 or 300 years down the line (at least as long as they weren't on celluloid base). Actually I tend to agree with you, at least for now, where technology will go in 5, 10, 25, 100, 300, 500 years is anyones guess. For all we know in 20 years the digital photography thing will have run it's course, and we will all be shooting film again. Just it will be processed and scanned. W |
#56
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John wrote:
On Mon, 04 Oct 2004 22:16:45 -0400, The Wogster wrote: So because prior methods have failed to last, then new ones will be condemned to the same failure? Yep. It's called "commerce". "New and improved" sells new equipment. Old equipment and methods are replaced and rapidly become extinct. All in the name of Big Bizness. In two years your 32 bit OS will be extinct. Ready for that ? Actually it will not be, behind me, is a machine running Windows95, and this one runs WindowsME, both will run as long as they are still serviceable, as they are doing the job right now (although the Win95 machine needs a new mouse, too much cat hair). The machine under the desk is from the DOS era, but it runs Linux as a gateway, perfect use since the power switch froze, and it can't be turned off. W |
#57
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Tom Phillips wrote:
The Wogster wrote: Tom Phillips wrote: In article , Gregory Blank wrote: Ok what do you need a darkroom for then? In article , Helge Buddenborg wrote: That's my opinion and I'm sticking with it, "Digital Photography is "GREAT". What he misses (completely) is that digital imaging, though an imaging medium, is not a *photographic* medium. The physics simply don't support this. And when people begin to see through the marketing hype and in 20 years lose all those non-existent image files on their hard drives they will realize film is the better medium. There simply is no permanent archival storage for digital and never will be, since as mere data it's dependent on 100% on electronics rather than concrete materials. There is no permanent archival storage for data, yet. Read my lips: it's electronic. It can _never_ be permanent. It's ones and zeros, mere data, representational, not a real image, 1000% dependent on electronics and the storage mediums that can actually read it, which changes constantly. Shall I go on? It comes down to standards, if governments, were to legislate that, these file formats, stored on this media type, will be readable by all players made from this date forward. You would have, effectively, a permanent digital storage medium, providing the media would last indefinitely, under adverse conditions. However it means that future storage methods would not be developed, nor would new file formats. However photographs are not the only data that need this kind of storage, so active work is being done in this area all the time. Guess I need to go on: There's no such thing as a digital "photograph." A photograph is a real, tangible image actually created by the action of light on a light sensitized material. It's chemical and permanent. Even if the emulsion degrades due to exceptionally horrendous care and storage, the silver metal compounds it's composed of lasts forever. Digital disappears the moment your hard drive, CD-R, DVD, etc., fails. Not to mention silicon doesn't record anything (it can't, the physics don't allow it) and the regenerated voltage/image data stored on your computer is, all together now -- mere data that represents an image. So I suppose, that that digital representation, when printed by a laser onto a piece of paper covered with AgBr and then processed, is still simply a representation? This makes zero sense; reminds me of king dubya talking about foreign policy... and longer then film will last, Ignorance abounds. Film (according to Dr. James Reilly of the Image Permanence Institute) begs to differ. If properly stored, his Storage Guide for Acetate Film states film can theoretically be preserved for thousands of years. Regarding film on polyester base (b&w sheet films like Tmax), these are stated matter of factly to have an estimated life of 500 years even when stored under normal "room" conditions. If the images on film or paper are toned or otherwise protected from oxidation, the emulsions should also last. would need to last under less then ideal conditions. The problem is that you would need to wait 500 years to see if it lasts 500 years. W W/dubya? hmmm...must be related. Nope, no relation, I just get tired of typing Wogster all thr time, and shortened it to W. W |
#58
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"The Wogster" wrote in message
. .. Once you have a monitor and printer balanced to the same colour, there is much less testing that needs to be done, then with AgBr prints. I do understand there are enlarger exposure meters, but have never tried one. Surely, you have to balance the monitor for each lighting condition that you work in (eg daylight and then darkness with indoor lighting), then you have to balance all the printer / ink / paper combinations that you use. I imagine achieving ones required colour balance (or toning on b&w) is easier in the traditional darkroom. Perhaps it's more wysiwyg than digital printing from a computer :-) Cheers Phil Hobgen, Southampton, UK ------------------------------------------- for email please delete the dash and take out the trash |
#59
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"The Wogster" wrote in message
. .. Once you have a monitor and printer balanced to the same colour, there is much less testing that needs to be done, then with AgBr prints. I do understand there are enlarger exposure meters, but have never tried one. Surely, you have to balance the monitor for each lighting condition that you work in (eg daylight and then darkness with indoor lighting), then you have to balance all the printer / ink / paper combinations that you use. I imagine achieving ones required colour balance (or toning on b&w) is easier in the traditional darkroom. Perhaps it's more wysiwyg than digital printing from a computer :-) Cheers Phil Hobgen, Southampton, UK ------------------------------------------- for email please delete the dash and take out the trash |
#60
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In article ,
"Phil Hobgen" wrote: Surely, you have to balance the monitor for each lighting condition that you work in (eg daylight and then darkness with indoor lighting), then you have to balance all the printer / ink / paper combinations that you use. I imagine achieving ones required colour balance (or toning on b&w) is easier in the traditional darkroom. Perhaps it's more wysiwyg than digital printing from a computer :-) Either my understanding has gotten better over time or the color matching systems have,...possibly both. -- LF Website @ http://members.verizon.net/~gregoryblank "To announce that there must be no criticism of the President, or that we are to stand by the President, right or wrong, is not only unpatriotic and servile, but is morally treasonable to the American public."--Theodore Roosevelt, May 7, 1918 |
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