Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 73,999   Posts: 1,633,459   Online: 919
      
Page 3 of 5 FirstFirst 12345 LastLast
Results 21 to 30 of 50

Thread: New emulsion

  1. #21
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    24,188
    Images
    65
    Thanks Bruce.

    All too few people have seen samples, and very few have seen it on canvas or watercolor paper. Depending on scene, these can be very striking.

    PE

  2. #22

    Join Date
    Dec 2004
    Shooter
    Multi Format
    Posts
    2,146
    PE, 100 ASA sounds great already (I understand the difficulty is in speed), but I read lately that a lot of people are interested in the slower films, like 25ASA.
    What's holding you back to concentrate your expertise on this kind of speeds?

    Non silver halide processes will put all of us over a hundred years back...

    G

  3. #23

    Join Date
    Jun 2007
    Shooter
    ULarge Format
    Posts
    67
    Quote Originally Posted by Photo Engineer View Post
    Ray;

    Also, if Kodak, Fuji and Ilford go out of business or falter in any way and we emulsion makers are all gone (there are about 200 WW and we are rather oldish now) how will you make anything that is silver-gelatin unless it is passed on.

    PE
    I fully expect that silver-halide based materials will be discontinued by all commercial interests in the fairly near future. Probably the last to go will be type C papers since they are still cheaper to use than inkjet in commercial labs.

    I make Dye Transfer prints. While I am using a commercially made stock of matrix film made to my formulation, I have made it myself in the past, and would make it in the future if need be. I do this because I feel that the dye prints are far superior to any other method I have seen, its worth the effort and expense because it simply can't be duplicated any other way. For that reason alone, its worth preserving the methods of making the materials and the techniques for using them to make the finest color prints.

    Clearly, there are many other processes (B&W silver halide fiber papers for instance) which give superior results and are worth maintaining the knowledge base for making them. This will disapper completely when the firms currently making these materials become distant memories. If we don't do it, no one will.

    Finally, the technology of making silver halide materials is fairly simple (in its basic form) when compared to what sort of infrastructure needed to maintain digital photography. You don't need a $ 2 B silicon fab plant with which to make sensors for instance. If the s--t really hits the fan (and from my current prospective, it is doing precisely that right now) then society won't have this 'apex' digital technology anymore, and the only method of recording images will be silver halide. Now, THAT is something worth the effort to preserve! Just my opinion. Regards - Jim Browning (Mister Dye Transfer)

  4. #24
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    24,188
    Images
    65
    Quote Originally Posted by argus View Post
    PE, 100 ASA sounds great already (I understand the difficulty is in speed), but I read lately that a lot of people are interested in the slower films, like 25ASA.
    What's holding you back to concentrate your expertise on this kind of speeds?

    Non silver halide processes will put all of us over a hundred years back...

    G
    I guess you have missed my earlier posts.

    I have an ISO 3, 6, 12 and 25 set of blue sensitive emulsions similar to those extant nearly 100 years ago. Two years ago I expanded that to an ortho ISO 40 emulsion, and now I am working on an ortho ISO 100+ emulsion and BTW, I just finished testing the new raw emulsion and it is as fast as the finished ISO 40 emulsion so add 1 - 2 stops and that is what it will be when finished.

    When I save enough $$, I will get a set of IR goggles and lights and go on to make the pan equivalent which will be rather nice because then I can extend the work backwards to the ISO 3 and make it pan sensitive.

    I hope this answers your question.

    PE

  5. #25
    dwross's Avatar
    Join Date
    Feb 2004
    Location
    Oregon Coast
    Shooter
    Multi Format
    Posts
    912
    Ron,

    From all the interest you generate every time you post an update, it'd be a good bet that you could start publishing what you know now rather than later. I realize you don't feel like you are in a financial situation that allows you to publish without compensation, but I'd like you to consider selling 'chapters' at a time, as you finish them, either CD's or downloads. I'm predicting: Hot as pancakes and an income for life. Your public awaits.


    For those of you who may be new to this thread and topic, Jim Browning (a.k.a. Mister Dye Transfer) has set the standard for those of us who cherish the philosophy of public domain. You can see all he is doing at http://www.dyetransfer.org/. Thank you, Jim.

  6. #26
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    24,188
    Images
    65
    Denise;

    You have some good points, but I hardly have time to devote to writing, taping and experimenting not to mention the fact that I have several requests on my time to consult. In addition, this work is not finished.

    Now, to add to it all, some people want to buy some of my formulas, making it all worth while as I have invested a lot to do this work ( something for me- finally! We can go on a real vacation instead of going to a workshop.). If I publish, where does this leave me financially for the money invested!? If someone offers me a royaldy or an outright payment for a formula and I give it away, the formula becomes worthless.

    I hate to put it this way, but so far I have lost a lot on this. I do not want to make a profit, I want to break even! The total cost - income is a huge negative value. I could give it, but I doubt if you would belive me!

    Ron

  7. #27
    Vaughn's Avatar
    Join Date
    Dec 2006
    Location
    Humboldt Co.
    Shooter
    8x10 Format
    Posts
    4,858
    Images
    40
    I have several 5x7 modern glass plate holders -- I was thinking of trading them for film holders (I believe I traded Denise a couple -- Denise, I hope they worked out for you!).

    But I think I will keep my little paws on those babies -- sounds like I might have need of them someday. What an interesting work-flow that would be...homemade silver gelatin glass plates printed on homemade carbon tissue.

    Thanks, Ron.

    Vaughn
    At least with LF landscape, a bad day of photography can still be a good day of exercise.

  8. #28
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    24,188
    Images
    65
    Quote Originally Posted by Vaughn View Post
    I have several 5x7 modern glass plate holders -- I was thinking of trading them for film holders (I believe I traded Denise a couple -- Denise, I hope they worked out for you!).

    But I think I will keep my little paws on those babies -- sounds like I might have need of them someday. What an interesting work-flow that would be...homemade silver gelatin glass plates printed on homemade carbon tissue.

    Thanks, Ron.

    Vaughn
    I hope you saw my last glass plate examples.

    PE

  9. #29
    Vaughn's Avatar
    Join Date
    Dec 2006
    Location
    Humboldt Co.
    Shooter
    8x10 Format
    Posts
    4,858
    Images
    40
    Quote Originally Posted by Photo Engineer View Post
    I hope you saw my last glass plate examples.

    PE
    Sorry, I did not. Must have missed them. May I please have a link to them...sorry for the trouble....

    Vaughn

    PS...did a search and found a post titled "Making a photographic plate by hand" is that the one you are referring to? I remember seeing something by you using the coating rod (well, not rod, but something like that.)
    Last edited by Vaughn; 04-01-2008 at 11:14 PM. Click to view previous post history.
    At least with LF landscape, a bad day of photography can still be a good day of exercise.

  10. #30
    dwross's Avatar
    Join Date
    Feb 2004
    Location
    Oregon Coast
    Shooter
    Multi Format
    Posts
    912
    Quote Originally Posted by Vaughn View Post
    I have several 5x7 modern glass plate holders -- I was thinking of trading them for film holders (I believe I traded Denise a couple -- Denise, I hope they worked out for you!).

    But I think I will keep my little paws on those babies -- sounds like I might have need of them someday. What an interesting work-flow that would be...homemade silver gelatin glass plates printed on homemade carbon tissue.

    Thanks, Ron.

    Vaughn
    Hi Vaughn,

    Yes! The film holders worked out just great. I thanked you over on LF, but come to think of it, you didn't reply, which isn't like you. I should have realized that you missed it. Here's what came of it: http://www.thelightfarm.com/Map/Glas...s/MapTopic.htm

    Don't give away your film holders either. The Photographers' Formulary is selling a subbed film product called Melenex. I've just started working with it and it coats like a dream and is easily cut with a rotary paper cutter to fit film holders. The film is listed as out of stock right this minute because the Formulary is having fits with their film cutter. Blessed perfectionists that they are, they aren't selling until its right, but the stuff is worth the wait. I've made a first run through with an emulsion designed for the film. We've had so much rain here the moss is growing moss, so I had to resort to contact printing a step wedge onto the coated film. I then enlarged and printed the resulting negative on Ilford Multigrade. We should be seeing enough nice weather soon that I can get the 5x7 outside to expose negatives. Look for the results on the Film Negative page of The Light Farm in 1-2 weeks.
    Here's what it looks like so far - a scan of the Ilford print and the negative it came from (a step wedge contact printed on handcoated Melenex.)

    I would love to see you print homemade plates onto homemade carbon tissue.
    Fun!

    Denise
    Last edited by dwross; 08-03-2008 at 10:31 AM. Click to view previous post history.

Page 3 of 5 FirstFirst 12345 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin