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    Re: Small Format SOFT focus lenses

    Here is my experiment. I took an Cooke 10,5" Anastigmat series II with soft focus adjustment and mount it to Canon digital camera via "paper tube and tape" method. This is an old version with only...
  2. Re: Going SOFT in the Enlarging Stage. Soft focus from sharp negs.

    I don't know. As far as I know he was also a photographer. That is written on wiki page you linked to. Who knows where his family name is comming from. I wasn't abble to find much about him. It's a...
  3. Re: Going SOFT in the Enlarging Stage. Soft focus from sharp negs.

    Umm, just a reminder: Waterhouse stops are named after their inventor: John Waterhouse.
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    Re: Developing 5x12 film in Jobo 3005

    Hi folks,

    I'm pleased to report, that I finally developed five sheets of 5x12 film in Jobo 3005 tank without problems. Curling sheets into spiral isn't a problem after few tries with waste film. I...
  5. 5x12 Lotus conversion for Arca Swiss camera

    For a long time I've been fascinated by panorama format. I was looking for a 6x17, but it was always too expensive. Then I saw Kerry's 4x10 conversion, and it was a catalisator for my idea. When I...
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    Re: Developing 5x12 film in Jobo 3005

    Hi Oren,

    That might be worth trying. I checked, and when curled, my film fits well perfectly. Curling film so, that it will not overlap in pitch darkness will be fun process to standardize....
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    Re: Developing 5x12 film in Jobo 3005

    Hi Oren, I loaded straight into the well with 5 cm sticking out of the well.

    It was this discussion that encourage me to try:...
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    Developing 5x12 film in Jobo 3005

    Hi folks,

    After reading on this forum, that it's possible to develop 5x12 film in Jobo 3005 drum, I went ahead and borrow the drum to see, what's up. Film loads into the drum all right. It sticks...
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    Speed of half the Eidoscope

    Hi,

    Since I moved to 5x12 format, I need to put aside Eidoscope #3, as it would not cover, except in macro conditions. Since Jim Fitzgerald is using the rear element only with great success, I...
  10. Re: Hermagis Serial numbers Need your help with a database

    Here is mine:
    46028 and year 08 which is in agreament with Patrice H. Pont and Jean Loup Princelle's book, which gives number 35000 for year 1900 and number 50000 for year 1910.
    Marko
  11. Re: What do you need from a 1910 European Catalogue?

    Thank you, Steven! It looks like there are two different designs with different lens sizes. I wonder, if this could be confirmed with other literature?
    Cheers,
    Marko
  12. Re: What do you need from a 1910 European Catalogue?

    Steven, l searched for Buch Weitwinkel Aplanat sere C, but l only foud Ole's glory to this wide angle objectives. I'll be very thankful, if you can share the catalogue page showing the data.
    Marko
  13. Re: Standard 300mm f5.6 and standard 360 mm lenses on 4x5 camera.

    For infinity work 300mm lens needs 300 mm of bellows (few milimeters more or less) and 360mm lens needs 360mm of bellows. So both of this focal leinght lenses would work on your Horseman. Portraits...
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    Re: Anyone one knows maker of this lens?

    Steven l don't think it's a periskop. If you look at reflections of rear element, it have two strong and one weak reflection. It looks like french ladscape objective. As far as a maker goes, l would...
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    Re: needs ome help with this lens design

    TSteven, do you think it's possible, that somebody else manufactured the objective, since most of the data was described in Puyo and Puligny's book?
    Marko
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    Re: needs ome help with this lens design

    I now, because you told me ;). Did you check the distance between the lenses in this last configuration? The design on dioptrique.info site have lenses very close together. You are of course right,...
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    Re: needs ome help with this lens design

    It looks that Puyo and Puligny were very productive! There is another objective on dioptrique.info that is different still. It uses two plano convex lenses instead of two positive meniscii.

    Marko
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    Re: 8x10 Arca Swiss format extender

    Hi Bob,

    Those images are what I was looking for, thank you.

    Makro
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    Re: 8x10 Arca Swiss format extender

    Thanks Vinny,

    I saw it here, post #33. Is there a photo from any other angle? Google wasn't very helpfoul.

    Marko
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    8x10 Arca Swiss format extender

    Hi Folks,

    I'm looking for photos of 8x10 front frame extender (part no. 069000). Guenter from Lotus camera made me a 5x12 back for my Arca. Unfortunatelly in vertical orientation I need to use all...
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    Re: needs ome help with this lens design

    Steven, l checked the curves of Periskop and Objectif d'Artiste, and as much as l can determmine, they are not the same design. Curvatures and lens thickness are different.
    Marko
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    Re: needs ome help with this lens design

    Hi Steven,

    I found the design on dioptrique.info site. It might be similar to Objectif d'Artiste or might not. I didn't check - yet.

    Cheers,
    Marko
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    Re: Lenses for circular pictures on 8x10

    That chart is an usefoul resource, but not for what OP would like. Those data are for objective focused at infinity. On the other hand with a bit of trigonometry, one can calculate image circle at...
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    Re: Delta 100 and Pyrocat-HD

    In the past I used this combination exclusevelly. I went a bit lower than Chris and used ISO 64, but my tests aren't all that rigorous.
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    Re: Ross Xpres 300mm f4.5 design

    Collin, are you sure that the front cell is cemented? From the picture on first page, one would think that theat is a two lens air spaced cell. The problem might be unscrewing the front element. Just...
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    Re: Ross Xpres 300mm f4.5 design

    The thing is, that construction of the barrel will vary from manufacturer to manufacturer. So if you can't increase the distance between the two elements of the front cell, you will not be abble to...
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    Re: Ross Xpres 300mm f4.5 design

    Collin, in Tessar design, the front light is air spaced two element design. And you shall increase the distance between those two. The rear cell is a cemented doublet. And increasing distance between...
  28. Re: Has there ever been a lens like Reinhold's new 790mm F:5.4 ULF Lens?

    Mark, are you sure about that? Aren't Kodak portrait, Rodenstock Imagon and other meniscus lenses corrected (sort of) for chromatic abberation? I use to play with replica of Puyo-de Pulligny...
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    Re: IR googles and near IR films

    Hi Jody,

    Thank you. Here is a sensityvity spectrum of AGFA Aviphot 200. It's also clear above 800nm. Now to the question: did anyone tested their IR googles for 850 or 860nm LEDs?
    96813
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    Re: IR googles and near IR films

    Hi Bill,

    Are you talking about 930nm LEDs? That's unfortunatelly what was expected. Another option might be 860nm LEDs. Their emiting spectrum is very narrow indeed. And if people are using green...
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    IR googles and near IR films

    OK, I know it sound stupid, but are IR googles safe for near IR films like Rollei IR? I searched quite a bit and by specification AGFA Aviphot's sensitivity drops to zero at around 770nm. Since IR...
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    Re: How about some infrared images

    How about some colour IR? I started to experiment with Aerochrome in 4x5 size. This is the first usable photo so far. Film expired in 2006 and was at least some time in cold basement instead in...
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    Re: Pictorialism Images

    What is interesting to me, is that I can see the fine images, BUT can only imagine what the prints are like. In Russ Young's disertation he wrote, that inability to see what the prints looks like...
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    Re: question about sinar copal shutter

    The "problem" with this pin is, that if you are not using original Sinar lens boards, they often don't alow movement of this pin. So if previous owner use it for barrel lenses and wasn't prepared to...
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    Re: Some Soft Focus Lens Sales Information

    It looks like it was the right decision not to buy it. It's a 4,5 variety 12".

    This field of soft focus objectives is really fascinating. One just keep finding new branches on this tree. Thank...
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    Re: Some Soft Focus Lens Sales Information

    Does anyone have more information on this type of lens? I saw it once, but was afrait to pull the trigger, as information is prety hard to find. The description of it's design resembles the...
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    Re: soft focus landscape

    You are right, that material changed. But even today's film is very much sensytive in blue and UV region. Just look at say Ilford Delta spectral sensitivity. And the fact is, that with orange filter...
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    Re: soft focus landscape

    Ramiro, you might try to test the right spot for focusing lens with chromatic abberation. If I remember correctly, you'll need to move rear standard a bit forward from your best focus. Frederick...
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    Re: soft focus landscape

    Ramiro, if you ask me, I much prefer this last one. The first one is dreamiest of them all, but I find it rather out of focus and without detail, even at this small size. You observed that as well....
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    Re: soft focus landscape

    Ramiro, try your lupe with orange filter. You might have problems with chromatic abberation and focusing shift.

    Marko
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