Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,974   Posts: 1,558,732   Online: 803
      
Page 2 of 2 FirstFirst 12
Results 11 to 20 of 20
  1. #11
    Vaughn's Avatar
    Join Date
    Dec 2006
    Location
    Humboldt Co.
    Shooter
    8x10 Format
    Posts
    4,692
    Images
    40
    Quote Originally Posted by BetterSense View Post
    I was thinking about building a panoramic camera of the rotating type that would take roll film and be able to make 360 degree panoramas on 120 film...
    I contact printed such a negative -- The camera actually took about 420 degrees. I do not remember the focal length of the lens, but it must have been fairly wide, maybe a 50mm?

    If I remember correctly (no guarentee!), the 360 degree portion just fit corner to corner on a 16x20 sheet of paper. A package of 20x24 paper would last a long time, cut into 4"x24" pieces.

    I used a large piece of 1/4" glass on plywood -- enlarger up all the way to contact print it.

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

  2. #12
    Colin Corneau's Avatar
    Join Date
    Nov 2007
    Location
    Brandon, MB
    Shooter
    Medium Format
    Posts
    1,754
    Images
    337
    Quote Originally Posted by Inayat Noor View Post
    I had Steve Grimes machine a 6 X 12 opening in one of my Omega 6 X 6 negative carriers. It works fine.
    I did this same thing, with both a 6x6 neg carrier, and a 35mm carrier for my Widelux and XPan negs.

    I used a plasma torch, via a friendly teacher at a local high school. Filed and sanded it down myself...works great.

  3. #13
    BetterSense's Avatar
    Join Date
    Aug 2008
    Location
    North Carolina
    Shooter
    35mm
    Posts
    2,879
    Was this a 23C enlarger? I'm surprised the light source will cover a 12cm long negative.
    f/22 and be there.

  4. #14

    Join Date
    Jul 2008
    Location
    Baltimore, MD., USA
    Shooter
    Medium Format
    Posts
    230
    Quote Originally Posted by BetterSense View Post

    I understand that some panoramic cameras don't us the rotating design and are just wide-angle lenses afterall.

    In any case, how do you print panoramic negatives?
    My experience printing panoramic negatives was for a pro ten or fifteen years ago. He shot with a Noblex. The one characteristic of these negatives I found challenging was a significant shift in density from the center outwards. I recall using my fist to dodge the center area for the base exposure, so I guess the rotating lens design has its faults. I used his Beseler 4x5 with a custom cut carrier.

    The Noblex was pretty neat but I would be more likely to put a Super Angulon 90 on a 4x5 and just crop it. I think it would be easier to print.

  5. #15
    nsurit's Avatar
    Join Date
    Jan 2005
    Location
    Texas Hill Country
    Shooter
    Multi Format
    Posts
    1,291
    Images
    17
    I'm just getting set up with a darkroom and have a 5X7 enlarger. That should do it for 617, shouldn't it? Bill Barber

  6. #16
    Vaughn's Avatar
    Join Date
    Dec 2006
    Location
    Humboldt Co.
    Shooter
    8x10 Format
    Posts
    4,692
    Images
    40
    Once I used a 4x5 (150mm lens) and a Calumet 120 roll back (6x7) to take a panoramic of the East Side Sierras from within the Alabama Hills. I used color negative film and did it in 7 frames, centering Mt Whitney and all. I was planning on contact printing it with the film uncut. But I set my camera up a little differently for some reason and I built up the panoramic images ass-backwards. I had to cut the roll up in its individual frames and then tape the whole thing onto glass so it would read correctly. Worked like a charm -- except the frame numbers do not run exactly the proper way.

    I printed onto some RA4 paper a friend gave me -- a damaged roll of 5" wide x 200' (or thereabouts) long paper from the place he worked. I had to unwind 30 feet or so to get to unfogged paper. I processed using a converted Cibachrome processor and could process any length I could expose. I just had to be in the room as the print first appeared from the back of the processor (a Dev/Bleach-Fix unit, no wash/dry), as it had a tendency to want to curl right back into the processor.

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

  7. #17

    Join Date
    Apr 2009
    Shooter
    Large Format Pan
    Posts
    22
    I've been printing 120 panoramics for years using a stretched 4x5 enlarger. The enlarger will handle a 4 x 14 neg and has a colour head. Most of my negs are around 12 inches in length. I haven't used the enlarger for a few years as I'm now scanning the film, output is digital. I may get rid of the enlarger as it's taking up space.

    At one stage I was building an 8x20 enlarger for bigger negs. I managed to get hold of 2 identical 8x10 colour heads but never got around to doing the conversion.

    Clayton

  8. #18
    David A. Goldfarb's Avatar
    Join Date
    Sep 2002
    Location
    Honolulu, Hawai'i
    Shooter
    Large Format
    Posts
    17,372
    Images
    20
    Quote Originally Posted by Thomas Wilson View Post
    My experience printing panoramic negatives was for a pro ten or fifteen years ago. He shot with a Noblex. The one characteristic of these negatives I found challenging was a significant shift in density from the center outwards. I recall using my fist to dodge the center area for the base exposure, so I guess the rotating lens design has its faults. I used his Beseler 4x5 with a custom cut carrier.

    The Noblex was pretty neat but I would be more likely to put a Super Angulon 90 on a 4x5 and just crop it. I think it would be easier to print.
    I have a Noblex 150, and I don't find this to be the case. Are you sure he had a Noblex, or that it wasn't an enlarging issue (wrong condensers or too short an enlarging lens for the format)? There shouldn't be falloff from the extreme edges to the center, unless the lighting favors the center of the image, because the lens is a constant distance from the film and it isn't a particularly wide lens (50mm Tessar on the medium format Noblexes). This is in fact one of the more unusual qualities of a swing lens image. Another possibility is that the camera had a problem causing uneven exposure, but it wouldn't be falloff of illumination like you would expect from an ultrawide lens.

    Here are a couple of Noblex images in my flickr account, and they didn't require dodging in the center--

    http://www.flickr.com/photos/davidag...b/tags/noblex/
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  9. #19
    BetterSense's Avatar
    Join Date
    Aug 2008
    Location
    North Carolina
    Shooter
    35mm
    Posts
    2,879
    I've been printing 120 panoramics for years using a stretched 4x5 enlarger. The enlarger will handle a 4 x 14 neg and has a colour head. Most of my negs are around 12 inches in length.
    What do you mean by "stretched 4x5 enlarger"? When you say 4x14, do you mean centimeters? How can you print 12-inch long negs when even 8x10 enlargers only go to 10 inches?
    f/22 and be there.

  10. #20

    Join Date
    Apr 2009
    Shooter
    Large Format Pan
    Posts
    22
    Quote Originally Posted by BetterSense View Post
    What do you mean by "stretched 4x5 enlarger"? When you say 4x14, do you mean centimeters? How can you print 12-inch long negs when even 8x10 enlargers only go to 10 inches?
    Inches!

    Yes I stretched the enlarger, it has a whole new centre section with the standard lamp house bolted back on. This is a De Vere 504, a very common enlarger. I made new neg carriers, mixing box, housing body, bellows, it wasn't a 5 minute job, took a few months to finish. But I have the ability to print a 14 inch long neg. The Roundshot cameras I use produce a 16 inch long neg for a 360 rotation, usually I'm printing 10 - 12 inches of the neg.

    Clayton

Page 2 of 2 FirstFirst 12


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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