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  1. Re: Experience with Harman Direct Positive paper

    Good stuff. Thank you! You have been really thorough.

    I also had experience with Imago Positive Paper. I bought is by mistake actually but it is an interesting product. I was able to use some RGB...
  2. Re: Experience with Harman Direct Positive paper

    In 16x20 case the curl was about 1 cm from the base. Yes, had the emulsion been on the other side, it would have proven impossible to use for me as I used it without holders (I built a camera obscura...
  3. Experience with Harman Direct Positive paper

    I made series of photographs on 16x20" Harman Direct Positive paper and I noticed the following.

    The paper was considerably curled on the edges when taken out of the box, forming a flat bowl. I...
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    Re: Hyperion Lens Company

    The last statement is a speculation of course (given little information available) but I really doubt that Gundlach was able to get away with naming its own soft focus lens after another soft focus...
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    Hyperion Lens Company

    Does somebody know more about the Hyperion Lens Company, the creators of the Hyperion lens what I think became later known as Gundlach Hyperion Diffusion Portrait lens?
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    Re: Rare lens maybe only exists in catalog

    Interesting. Where did you encounter it?
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    Re: Rare lens maybe only exists in catalog

    According to this https://www.largeformatphotography.info/forum/showthread.php?65614-Some-Soft-Focus-Lens-Sales-Information&p=627937&viewfull=1#post627937 old post, it has been at least once listed...
  8. Thread: Zoom?

    by erian
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    Re: Zoom?

    The catalog states: "The telephotographic lens consists of a collective element of long focus and a dispersive element of short focus, the combined focus being considerably lo nger than that of...
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    Wray soft focus lenses

    There are 4 Wray lenses listed in Vademecum that employ soft focus qualities:

    Wray Diffused Image Objective
    Wray Portrait Lens
    Wray Soft focus f/2.5
    Wray Soft focus f/5

    Does somebody know...
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    Re: Steinheil Cassar knowledge?

    They produce it also for large format cameras. F/3.5 was made up to 11 7/8" and the largest was 27 2/3" at f/5. I am wondering how they compare to other triplets like Goerz Hypar.
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    Steinheil Cassar knowledge?

    What to think about f/3.5 Steinheil Cassar? Is it an usual triplet design lens or does it produce something noticeably unique?
  12. Re: Extremely Dumb Questions about Lens Systems (Specially Cooke triplet)

    These are good questions but as I am not knowledgeable enough to answer precisely then will wait till somebody else will address these.

    I understand that you are investigating some optical...
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    Re: Wet Plate Supplies, are they operating now

    I realized few times ago that I will not get a reply from them so took a risk and ordered to an UK forward address.

    It worked.
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    Re: Beck Biplanat Series II No 8, 17" f/6

    I got Beck, Photographic Lenses A Simple Treatise, both 6th and 7th editions.

    Page 278-279 are advertisements of Beck lenses on 6th edition.

    210514

    Based on this I tend to believe that it is...
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    Beck Biplanat Series II No 8, 17" f/6

    Does anybody have close encounters with this species?

    http://www.earlyphotography.co.uk/site/entry_L54.html says that it was a soft focus lens.
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    Re: Some Soft Focus Lens Sales Information

    Little more soft focus lenses

    2020/10 Verito f/4 18" ($700)
    2020/11 Spencer Port-Land f/5.6 11½" (£530)
    2020/11 O.Zwierzina "Plasticca" f/4 400mm (€550)
    2020/12 Taylor Hobson 8x5 R.V.P. (£545)...
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    Re: Schneider Symmar S 210 5.6 help

    I have never seen something like this offered elsewhere. It does not match "golden" series, as those had also front element in brass like finishing. Looks some DIY job to me. I am very curious about...
  18. Thread: Cine Xenotar 150

    by erian
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    Cine Xenotar 150

    There exists mount of Xenotar 150 that was intended for Cinema/TV cameras.

    Is it different design (like is AV Xenotar) or is it simply the same as LF lens but in different mount?
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    Re: why are there no "modern" super fast LF lenses?

    I understand he found that the forum had become too toxic for him. Unfortunately also his web site providers went down and silent. A great tragedy we have to accept.

    I too shoot wide open for...
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    Re: why are there no "modern" super fast LF lenses?

    Naturally we want to know how much does this lens weight.
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    What to think of Tele Hexars?

    How do Tele Hexars compare to other large format tele lenses like Tele Xenars, Tele Raptars and Tele Optars?
  22. Re: Goerz Doppel Anastigmat Serie III No 7 360mm f6 COVERAGE or lens catalogue

    Coverage is usually given for infinity. When you focus closer then the coverage will increase. There are exceptions. For example coverage for reproduction lens is given for 1:1 and infinity coverage...
  23. Re: Voigtländer Euryscop No. 6 Series IV Real World Coverage ?

    So did you end up getting the 500mm Dogmar or it was somebody else? When you did then congratulations. When you did not then do not worry because it makes sens to test with what you already have at...
  24. Re: Voigtländer Euryscop No. 6 Series IV Real World Coverage ?

    I second to this.
  25. Re: Voigtländer Euryscop No. 6 Series IV Real World Coverage ?

    Another useful concept to have is that the subject distance for the 1:1 image (that is when the subject in front of the lens is the same size as the image) is double of focal length from the lens...
  26. Re: Voigtländer Euryscop No. 6 Series IV Real World Coverage ?

    Normal lens for given format (X x Y, say 8 x 10) is roughly square root of (X squared + Y squared) (i.e. Pythagoras theorem). So for 8x10" it is square root (8 square + 10 squared) = square root (64...
  27. Re: Voigtländer Euryscop No. 6 Series IV Real World Coverage ?

    You can think of lens coverage in the following terms.

    Lens have two basic properties. The lens has angle of view in the front of the lens. This depends on the lens focal length. The lens has...
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    Re: Some Soft Focus Lens Sales Information

    Yes, this thread. But your links are unfortunately broken.
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    Re: Some Soft Focus Lens Sales Information

    Sure. Why not? But then you also should include the story I think.
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    Re: Some Soft Focus Lens Sales Information

    Just did not think too much about it. Sure there is only one group. I fixed the description to be more correct.
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    Re: Some Soft Focus Lens Sales Information

    Lets push some fair life into this thread and post some last year soft focus lens purchases.

    I listed them in original currency so you could add your expected approximate shipping cost and taxes....
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    Re: OF-233 210mm 1:2.5 Soviet Aero Ektar Lens

    Very nice work. I like it.
  33. Re: The story of Yamasaki Optics photographic lens lab

    Very nice! Thank you for sharing!
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    Re: Help with Toyo 45 moldy bellows

    I actually ended sending the camera back.

    But I tried ozone later on with various other items. Sometimes it helped and sometimes it did not.

    I used a large plastic box to run the device with...
  35. Re: Dallmeyer 14" f4.5 Serrac vs Voigtlander Heliar 360

    Serrac is Tessar design, so it much more common than Heliar. So you have to compare Tessar against Heliar. I like both, so I would take both (I mean Tessar, not specifically Serrac that I do not own...
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    Anybody from UK to help me out?

    I would like to order few solid items (book and lens) from http://www.wetplatesupplies.com/ but they only list delivery to UK and Kevin from there does not reply my emails.

    Assuming that when an...
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    Re: difference in heliars

    If you find a dead link then check https://archive.org/

    Changes are that it is archived.
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    Re: What longest rail possible for Horseman?

    Good point!

    I envy Americans who have easy access to these nice aluminium systems.
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    Re: What longest rail possible for Horseman?

    It means that it is not really stable?
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    What longest rail possible for Horseman?

    I have myself modular 760mm rail. I have also seen 1m rail. Is there anything longer possible by combining two rails together?
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