Re: [pinhole-discussion] Powder vs. Liquid
>From a health & safety perspective I would choose liquid concentrates. Kodak's HC110 is my personal favourite. The developer is supplied as a syrupy concentrate which you are supposed to dilute 1:3 with water to make a stock solution and ultimately 1:31 to make dilution B. I do not make stock solution; instead, I work directly with the syrup, which will keep at least 1 year if you exclude air from the opened bottle. More information at: http://www.covingtoninnovations.com/hc110/ Always use disposable gloves to avoid hydroquinone sensitisation/allergy. Ray
Re: [pinhole-discussion] first image of a photograph?
I'm in total agreement with Ellis & thank-you Jason for the informative links.If reading other's correspondence (? voyeurism) appeals then the Correspondence of William Henry Fox Talbot Project http://www.foxtalbot.arts.gla.ac.uk/ might appeal. Ray
Re: [pinhole-discussion] first image of a photograph?
Ellis replied: "Anna Atkins used Talbots photogenic (shadowgraph) process, this really only gives a outline of the article placed on sensitive paper. This still leaves Talbots book to be the first to provide photographs as recognisable images". This is Pandora's photographic box we are lifting the lid on Ellis - It all comes down to how inclusive one's definition of what a 'photograph' is. I'm totally in awe of Anna Atkin's remarkable achievement - to print and publish a book, photographically illustrated with 424 photogram-cyanotype images in 1843. Ray
Re: [pinhole-discussion] first image of a photograph?
Regarding John Ptak's post - I don't know the answer but my first impulse was to access Robert Leggat's 'History of Photography' http://www.rleggat.com/photohistory/ a fantastic resource - there may be additional clues there. I too was under the misapprehension that Fox Talbots 'Pencil of Nature' was the first photographically illustrated publication - not so it seems, go see significant people: ATKINS, Anna Ray Ray Beckett P O Box 577 Coolangatta QLD 4225 Australia URL: www.pinholephotography.com.au
[pinhole-discussion] Re: CJ's new question
CJ Your project to introduce the magic of pinhole to your class (in the absence of a conventional darkroom) is commendable. As someone who has attempted to do it the 'hard way' and learned from the experience I would recommend separating the activities of (a) loading the camera from (b) processing the images in the dark box as chemical splash/residue does not work well with handling unexposed photo-paper.You would only need to acquire a used (colour) processing drum designed for daylight processing.So the sequence would be: load camera >expose >unload camera & transfer exposed paper to drum for room light processing.Are you aware of the elegant solutions to the inherent challenges of daylight printing developed by Jim Kosinski (Starlight Cameras) ? http://www.paintcancamera.com/pages/524842/index.htm Ray Beckett www.pinholephotography.com.au
Re: [pinhole-discussion] weird idea for a pinhole camera
Phillip Even if it has been done before you should consider doing it yourself and you may gain new insight or be led along a different path to a new revelation. Thomas Bachler the German born pinhole artist in his recent exhibition and book Arbeiten mit der Camera Obscura (Pinhole Exhibits), published parallel to the exhibition at Kunsterhaus, Gottingen. (2001) includes 'Scenes of Crime' - where 'shooting' a picture is achieved through firing a gun into an aperture-less camera containing the photosensitised material. The gun's trigger becomes the camera's shutter, penetrating the camera (and negative) making the exposure and transforming the scene into the 'scene of crime'. RB Ray Beckett P O Box 577 Coolangatta Q 4225 Australia Mobile: 0408 230 961 Email: rbeck...@bigpond.com URL: www.pinholephotography.com.au > --- Philip willarney wrote: > > pinhole-discussion@p at ??? > > > > The martial mood of the country led by some > > strange path to the following thought: > > > > Take a light tight cardboard box made of fairly > > thin cardboard: in the dark, securely tape film to > > two > > inner facing sides, and seal box. > > > > Take box outside, set it somewhere with a weight > > on top of it (a brick or rock). > > > > Stand away from the box, and fire a bb gun through > > the middle of one of the sides. If the board is > > thin > > enough, the bb should go through the box, through > > the first film, through the second film, and out > > again, causing 2 pinholes to be formed and > > simultaneously taking a picture in both directions > > at > > the same time! > > > > After a suitable exposure time, drop a slightly > > larger box on top of the first box to end the > > exposure. > > > > Has anyone done anything like this? Anyone want to > > try it and let me know how it works out? I haven't > > had a bb gun for, oh, 20 years, so I don't have the > > technology available... > > > > pw > > > > __ > > Do you Yahoo!? > > Yahoo! Web Hosting - establish your business online > > http://webhosting.yahoo.com > > > > ___ > > Post to the list as PLAIN TEXT only - no HTML > > Pinhole-Discussion mailing list > > Pinhole-Discussion@p at ??? > > unsubscribe or change your account at > > http://www.???/discussion/ > > > __ > Do you Yahoo!? > Yahoo! Web Hosting - establish your business online > http://webhosting.yahoo.com > > ___ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??? > unsubscribe or change your account at > http://www.???/discussion/
Re: [pinhole-discussion] Human eye
George I don't often have anything new or original to contribute to the discussion (and after this post the consensus will probably be 'just as well') but I can confirm that "pinpoint" pupils (eg from narcotic analgesia) are commonly about one millimetre in diameter, average pupil size is 2-3 mm (indoor lighting) but I have only seen 8mm pupils (fixed & dilated) in the deceased. Ray
Re: [pinhole-discussion] #80 drill bit
Hi Traci My name is Ray, from Oz the land Downunder. I lurk on this list but rarely contribute (there are already many informed voices providing advice and assistance). Regarding your comment .. ..."Or are you sticking this in an eraser like the "old fashion way"? I find that an X-Acto (or similar) hobby knife makes an excellent needle & drill-bit holding tool - see images on my website's camera project page: http://www.pinholephotography.com.au/Project/project.html
Re: [pinhole-discussion] Storage of unprocessed photo paper negatives
On Monday, July 30, 2001, Dennis Johanson wrote: .how long can exposed photo paper used as negative be stored before processing? Any special storage requirements? Dennis, The latent image in black & white emulsions is stable enough at normal room temperatures to remain virtually unchanged for several monthsat low temperatures/ humidity, several years.However, high temperature/ humidity and exposure to chemical fumes can cause rapid deterioration and complete loss of latent image within days (M J Langford-1977). NB colour materials are much less tolerant/ forgiving. Ray, rbeck...@telstra.com __ > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??? > unsubscribe or change your account at > http://www.???/discussion/ >
