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  1. Re: mounting gelatine filters between glass

    I've used Wratten gelatin filters in scientific applications, not photography, and I found those filters are so thin that they have a negligible effect on image quality even if they are not dead...
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    Re: Film changing bag or changing tent?

    In a pinch I've used a big changing bag but to stop it flopping down on the film loading area I first put in the largest cardboard carton that will fit. This creates a "cave" for the hands to work in.
  3. Re: Contact Printing Large Format negatives with a Leica Focomat V35?

    Too true! Not only this but with the enlarger lens well stopped down any specks on the glass negative carrier, enlarger condensers or diffusion plates could also be imaged as out of focus blobs. One...
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    Re: Gregory Crewdson's 'An Eclipse of Moths'

    From the Gargosian Shop link offered by Tin Can it seems that Gregory Crewdson sells pictures described as "Digital Pigment Print"; essentially pixel dust sprinkled on paper. But yes, it is possible...
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    Re: AC, Venting, ideas for a Darkroom Shed?

    The big stink in a conventional black and white darkroom, the one some people spend hundreds dollars trying to conquer is, 99% of the time, acetic acid fume from the stop bath. Vinegar is just...
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    Re: AC, Venting, ideas for a Darkroom Shed?

    I did my third darkroom build a few years ago and worked through much the same considerations as you are facing. I found that the thing that really makes the darkroom a pleasant and productive place...
  7. Re: 300mm f5.6 TeleCongo Lens ... Which doesn't exist?

    Yes, old Prontor Press or Japanese copy of one. Yamasaki was very efficient in making good economically priced lenses but they were always hostage to what the shutter makers could supply on the day....
  8. Re: 300mm f5.6 TeleCongo Lens ... Which doesn't exist?

    I used to sell Yamasaki-Congo lenses and when I look at the catalog from 1991 I see:

    Tele-Congo Lens 300mm f5.6 for 4"x5" format
    Smallest stop f64
    Angle of View 30 degrees
    Image Circle @f16 is...
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    Re: Show us your home made camera...

    Beautiful work, beautiful materials, beautiful camera. Now the wish is more pictures of the camera and more pictures by the camera. Will it extend your successes with Xray film?
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    Re: DOF and diffraction

    For an exhaustive analysis of Depth of Field versus Diffraction go to the LF Home Page and tackle Depth of Field in Depth by Jeff Conrad. The mathematical derivations can be largely skipped if simple...
  11. Re: Buying large format lenses... (Newby question)

    Good advice indeed. And because I get paranoid about exerting significant force near a shutter I fire it on T to get the shutter blades out of the way. Then I open the iris fully to get those...
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    Re: Photographs of Windows

    https://live.staticflickr.com/65535/50021397361_b674b92132_b.jpg
    Quiet Customers, Baxter Street
    Gelatin-silver photograph on Agfa VC FB photographic paper, image size 16.3cm X 21.5cm,
    from a 4x5...
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    Re: Ships, boats, and/or watercraft

    https://live.staticflickr.com/8085/8360476842_afb05bfc34_b.jpg
    Idle Boats, Lake Cootharaba

    Gelatin-silver photograph on Ilford MG IV VC RC photographic paper, image size 19.3cm X 24.5cm, from a...
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    Re: Shooting in burn areas

    A fresh burn can be dirty, dusty, and nasty but a year later some of the larger pieces of charred trees are still standing and can be searched for under more pleasant circumstances. Here is an...
  15. Re: Lensboards for Macro Stereo :confused::confused::confused:

    And another way of doing macro stereo still life pictures is to put the subject on a turntable and rotate slightly between exposures. The background and lighting should be uniform or alternatively...
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    Re: Heliar Picture Post

    https://live.staticflickr.com/65535/50011222981_252314f965_c.jpg
    Casuarinas with Lichens
    Gelatin-silver photograph on Ultrafine Silver Eagle VC FB photographic paper, image size 21.5cm X 16.3cm, ...
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    Re: Post your signs

    The cheap trick is to stencil "GUARANTEED NO DIGITAL" backwards on an old white tee shirt, stand under an "official " sign, take the picture with a Mamiya C330 (the shirt reads right in the waist...
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    Re: Post your signs

    https://live.staticflickr.com/1428/5116111731_21d5fcb610_z.jpg
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    Re: Help me choose a camera to hike 2000+ miles

    I went to New Zealand a couple of years ago and covered about 2000 kilometres in the North and South Islands. Drove nearly every day, hiked nearly every day, covered some rough terrain, and went out...
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    Re: Congo 250mm f4.5 which shutter?

    My old catalogue for "Congo" Studio Lenses in Normal Barrel lists your lens. Specifications are:

    Focal length 250mm
    Aperture f4.5 to f64
    Format intended 6 1/2" X 8 1/2"
    Angle of view 54 degrees...
  21. Re: Size or 3D Model for a Linhof Kardan Color 8x10 lensboard ? + bellows ?

    I'm pretty sure I have a Linhof Kardan Color 8x10 lensboard that measures 223mm in the horizontal dimension and a maximum of 235mm in the vertical dimension. The shape is not rectangular and has...
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    Re: Long exposure experience with portraits?

    https://live.staticflickr.com/1693/25175540433_2e3628314e_c.jpg

    8x10 Studio Shoot, Tewantin
    Gelatin-silver photograph on Ultrafine Silver Eagle VC FB photographic paper, image size 16.2cm X...
  23. Re: Photo travel by vehicle, what's your favorite?

    https://live.staticflickr.com/8098/8472484812_8c37c2ff36_b.jpg
    Blizzard, Charlotte Pass.

    Gelatin-silver photograph on Ultrafine Silver Eagle VC FB photographic paper, image size 16.3cm X 21.3cm, ...
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    Re: To loupe or not to loupe?

    There is an old rule with a bit of truth to it: confirm focus using a loupe that has more power than the intended enlargement ratio. Two times enlargement - use a 4x loupe. Four times enlargement -...
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    Re: Heliar Picture Post

    https://live.staticflickr.com/7036/6845551064_0598239a08_c.jpg
    Fire Scar, Flinders Ranges
    Gelatin-silver photograph on Agfa Classic MCC III VC FB photographic paper, image size 24.4cm X 19.4cm,...
  26. Re: Hypo Clearing Agent = Ilford Washaid? I am confused!

    There is a shelf life trap that occasionally disappoints. Suppose a batch of Hypo Clearing Agent or Washaid is used to only half its capacity, say 20 sheets of FB 8x10 paper per litre instead of the...
  27. Re: Proper Formula for Sodium Chloropalladite?

    Beware the nomenclature trap. Sodium Chloropalladite is not the same as Sodium Chloropalladate. The "ate" ending tends to be used for a higher oxidation state and the "ite" ending for a lower one.
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    Re: Heliar Picture Post

    https://live.staticflickr.com/8073/8350904069_d5bf0484a3_b.jpg
    Melaleucas and Sedges, Afternoon

    Gelatin-silver photograph on Freestyle Private Reserve VC FB photographic paper, image size 16.3cm...
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    Re: Winter Wonderland: Post Your Photos

    https://live.staticflickr.com/769/21638010625_a423fa1354_b.jpg
    Billy Buttons in Snow
    Gelatin-silver photograph on Ultrafine Silver Eagle VC FB photographic paper, image size 16.3cm X 21.4cm, from a...
  30. Re: Archival Rating of The New Gen 5 Ilford RC Multigrade Deluxe Papers?

    I used to worry about the archival permanence of photographs I made using fibre base and RC base papers. But I don't worry anymore.
    I just process and wash the papers according to the best archival...
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    Re: Winter Wonderland: Post Your Photos

    https://live.staticflickr.com/627/21877196769_dec1202bd3_c.jpg

    Grass in Snow, Charlotte Pass


    Gelatin-silver photograph on Ultrafine Silver Eagle VC FB photographic paper, image size 21.3cm X...
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    Re: What Happened to Dry Mounting Prints?

    As I type this reply, on the bench behind me is a big roll of Kodak type 2 dry-mounting tissue and my tacking iron is heating up. All being well by the end of the day I will have dry-mounted 70...
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    Re: Keeping Time tray developing film

    Talking Timer purchased off Ebay. Nice electronic voice. Counts down minutes and seconds with a choice of alarm sounds at the end.
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    Re: Ventilation specs for darkroom

    First establish what fumes your chemistry will produce. If the fumes are irritating or toxic then you need a effective ventilation arrangement that pulls the fumes out of the darkroom before they get...
  35. Which labs still make traditional optical enlargements from 4x5 color negatives?

    A colleague of mine wants to shoot 4x5 colour negative film, develop it himself in C-41, and sent the negatives to some one who put those negatives in an enlarger and turn out 16" x 20" prints. The...
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    Re: What Makes a sellable photograph?

    After being associated with several photographic galleries over some decades my strong impression is that sales of photographs are not inherently related to the content of the photograph, the...
  37. Re: How to Develop Characteristic Curves in Large Format...Cheaply

    Years ago I used to test 8x10 films by doing stepped exposures by means of advancing the dark slide a little bit between shutter clicks. It's not hard to put 10 or more exposure steps along an 8x10...
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    Re: 450mm lens with 420mm bellows draw?

    Yes, I've done extensive trial with minus lenses from -0.5D to -2.5D. The stronger the supplementary lens the worse is the image quality, as expected.

    The reason to settle for tolerable image...
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    Re: The Mystery of Dad's Nikkor-W 210m f5.6

    I have a couple of Nikkor-W 210mm f5.6 lenses. Serial number 741104 has the 77mm front thread. It is in a Copal #1 shutter with the older style silver speed ring. This is a lens I use on an 8x10...
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    Re: 450mm lens with 420mm bellows draw?

    One desperate trick I've resorted to is to shorten the focal length of a lens. The 300mm I use on my 8x10 camera is sometimes too long and I want something slightly wider. Answer? Screw a #1 close-up...
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