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  1. Re: Voigtlander B serial transition to Portrait Objectiv serial engraving & Nomenclat

    Hello, I just acquired a Voigtlander lens. Serial number is 23494. It is a Petzval type but the one redesigned by Sommer. The separated doublet at the rear end follows the scheme on page 275 on...
  2. Re: Where to buy thin glass for dry plates in Europe?

    I checked that once and never found those Chinese frames over here. I think that the frames sold in Brazil are locally produced and unfortunately with 2 mm thick glass.
  3. Re: Where to buy thin glass for dry plates in Europe?

    Thanks jockel123, the funny thing is that I was about to order paper from Fotoimpex but I didn't know that they offer also glasses. I live in Brazil but once or twice a year a go to Europe and I take...
  4. Where to buy thin glass for dry plates in Europe?

    I have done dry plates using glasses intended for picture frames and they have about 2 mm. But some folding cameras, like KW Patent Etui, or Gaumont Block-Notes, Voigtlander Bergheil or Zeiss Ikon...
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    Re: Is focus a plane to plane affair?

    Darren, I understand your point about using the hyperfocal, that would be a solution. Nevertheless I would like to go a bit further. I asked this question because I am planning to make, for some old...
  6. Re: Help: which shutter for a Symmar 1:5,6/360?

    Well, I managed to remove the Heliar 1:4,5/240mm cells and fit the Symmar 1:5,6/360mm instead. So now both lenses can share the same Coumpound IV shutter (one at a time). Schneider literature says...
  7. Re: Help: which shutter for a Symmar 1:5,6/360?

    I found already that in regards to threads the cells fit on a Compound IV. The tube extension for this shutter is 45mm. If I add up front+rear+tube I get 113mm. The Schneider specs I found following...
  8. Re: Help: which shutter for a Symmar 1:5,6/360?

    Cells' threads are 67,8 mm.Thanks for the tip, I will check Dan Fromm's link.
  9. Help: which shutter for a Symmar 1:5,6/360?

    I have these front and rear cells of a Symmar 1:5,6/360. They are in a very decent condition, not pristine but absolutely usable. But the shutter is missing. Is it possible to find one with the...
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    Re: Is focus a plane to plane affair?

    Thanks for the clarification. So it is plane to plane, subject to image, both perpendicular to lens axis. Maybe there are lens imperfections, specially closer to borders, but anyway that is how it...
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    Is focus a plane to plane affair?

    234700

    A theoretical and maybe silly question. Suppose I have a camera with a well corrected lens at point A and a subject at the point S far from image centre. Let us say that I don't have a...
  12. Thread: Mystery 13x18

    by lungovw
    Replies
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    1,703

    Re: Mystery 13x18

    For the ones without bellows, having sliding box instead, people are asking outrageous prices and oddly enough finding buyers for them! I think I will stay with this one for the sake having a sample...
  13. Thread: Mystery 13x18

    by lungovw
    Replies
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    1,703

    Re: Mystery 13x18

    Talking about wet plate cameras.... I also have an unbranded camera in that same style, but with less metal parts. It matches designs I saw in literature that are typical of collodion cameras. It is...
  14. Re: VIDEO: LED Conversion UPDATE - and test prints

    Koraks, Thanks for your considerations. As they arrived when I have already printed hundreds of pictures using that LED head, I can't be but happy that I was not aware of those points you made at the...
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    Re: Portraits from 2022

    Made with a Tessar 300mm f/16 with FOMA100 18x24 cm. This film is expired so I developed it with D19, stock, for four minutes 20ēC. Camera was a Thornton Pickard Royal Ruby triple extension. I cut...
  16. Re: Making pure Triethanolamine out of 85% water solution

    Later, in the one shot working solution, it will be diluted in water anyway. So you are right in thinking that with 85% TEA and 15% water it could just be considered as a weaker stock solution. But...
  17. Re: Help - 4x5 Negative Developing Issue - Looking for Ideas

    It gave a sort of Van Gogh texture. I would try going in two ways: How to get rid of it and also how to enhance it :-)
  18. Re: VIDEO: LED Conversion UPDATE - and test prints

    I've been using an enlarger LED head for a couple of years now. It works great with multigrade paper. I made it to fit inside a Durst Laborator 1000 when the condensers are removed. But thinking of...
  19. Making pure Triethanolamine out of 85% water solution

    A couple of years ago I had good results with 510-Pyro developer and would like to make a new batch. But recently it has been impossible to find pure TEA, Triethanolamine, over here in Brazil. What...
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    Re: ICA Ideal Plate Holders, mysterious lever

    Yesss ! That is it. You know, the three holders fit so tight into the leather case that I was turning and shaking it upside down in order to get them out. Also in the camera it makes it a lot easier...
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    ICA Ideal Plate Holders, mysterious lever

    I had the chance to buy a like new Ica Ideal camera. It came with 3 double plate holders. The format is a bit odd: 10x15cm. But I have done dry plates and as the holders accept 2mm thick glass, it is...
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    Re: Where to buy raw chemicals in Europe?

    Thanks everybody, that was really helpful!
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    Where to buy raw chemicals in Europe?

    I live in Brazil but once or twice a year I go to Paris and/or Amsterdam due to family reasons. I used to buy from Disactis (French) my raw chemicals, but it seems they are no longer in business....
  24. Re: L. de Pulligny - C.Puyo - Objectifs d'Artiste

    Thanks Steven, maybe I will get a Darlot sample. There is a 40cm focal length available over here in S Paulo. The problem is that the seller is not able to give a clear description, or even send me...
  25. Re: L. de Pulligny - C.Puyo - Objectifs d'Artiste

    Yes, thank you, what I was trying to say is that there is another download option with better quality than this one. New Link: https://gallica.bnf.fr/ark:/12148/bp...=bpt6k1091147q
  26. L. de Pulligny - C.Puyo - Objectifs d'Artiste

    I went through some threads here in the LFF about these lenses. Somebody posted a link to a very comprehensive digital book about them located in the CNUM library, edited by the Photo Club de Paris...
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    What is the right formula for Hypercat?

    I was searching for a high acutance developer and went back to Hypercat, a developer I tried some years ago. Sources are OK about Stock Solution B but for A there are two versions:

    In the official...
  28. Re: Rodenstock lens set. Any information about this one?

    Yes, and I think this one being offered over here has only 6 out of the 7 cells. I will check it out and probably let it go.
  29. Re: Rodenstock lens set. Any information about this one?

    More info:

    207919
  30. Re: Rodenstock lens set. Any information about this one?

    Thank you Ron, with the key word you gave me "Bistigmat", I was able to find a lot more information on the web and also in other threads over here in LFPF.
  31. Re: Rodenstock lens set. Any information about this one?

    The lens displacement when the lever is actuated is so long that it makes me think it could be in a camera without bellows. It is a small lens, all the way forward it will probably focus a short...
  32. Re: Rodenstock lens set. Any information about this one?

    It is Rodenstock, I picked this picture because it gives a reference of size. But there are others with engravings.
    You are right about the helical. Only now I paid attention to the video. Auction...
  33. Rodenstock lens set. Any information about this one?

    This Rodenstock lens set is being offered over here in Brazil at ~200 euros price. Glass is nice but there is one broken iris blade inside. I don't know anything about it and searched for Rodenstock...
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    Re: Hermagis image size

    I made some pics with it. Here is dry plate portrait 18x24 cm. Contact printed on Fomatone MG Classic. I trained negative retouching with this one. Didn't want over do it and maybe end up leaving a...
  35. Solar UV exposure meter - for printing processes

    Hello, I would like to share with you a project that may be interesting for those doing printing processes using UV light. The idea is a device that allows you to print using sunlight and get...
  36. Re: Were Verito 18” lenses made in different barrel lengths?

    If that helps: I have a Verito 18" f/4,5 #15204 with iris and without any shutter. Total length is 7 1/4" (184 mm). The flange is positioned at the rear of the lens.
  37. Re: Online Reference for overview of Darlot Lenses?

    I like the idea of removing the old varnish and applying a new one when the barrel becomes plenty of flaws and stains. But I see and almost understand that some people consider that a sort of...
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    Re: Help to identify a Steinheil lens

    I am wondering whether it is a regular Aplanat with two pairs of flint or a variation made by Steinheil, from 1874 to 1881, combining F+C - C+F. These are told to be brighter (Agostini) and having a...
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    Re: Help to identify a Steinheil lens

    Yes, it is 9780.
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    Re: Help to identify a Steinheil lens

    Yes, thanks Ron, they are similar in proportions of their different elements. Corrado Agostini (only now I realised that I wrote "Corradini", in my post, sorry by that, it is now correct) mentions a...
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