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    Re: Is focus a plane to plane affair?

    Have you looked into figuring out the hyperfocal distance for your intended lens and aperture combination? I have heard stories of old press photographers setting up their speed graphics that way...
  2. Re: Gundlach Radar 12” anastigmat, a soft focus portrait lens?

    The Velostigmat name was used on a variety of lenses of different types. They were differentiated by the Series label.

    Velostigmat Series 1/1a -> Convertible lens closer to a Protar I think....
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    Re: Making Odd Sized Batteries

    I got a bunch of nickel plate strips from Amazon for a non-camera project with NiCad AAs a while ago (never used them.) In researching the topic, you need to be careful as you shouldn't use a...
  4. Re: 1960's Linhof camera factory tour movie...

    There is one, of a very rough sort. Turn on CC captioning for the video. Then go to settings and change from German to auto-translate and then choose the language of your choice. I have only...
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    Re: Expired Certificate Error

    I have been checking daily with Firefox and I was able to get in today. No longer any issue with the cert. The current one now lasts until February 2, 2023.

    -Darren
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    Re: Expired Certificate Error

    TLS/SSL certificates are used to encrypt data between your web browser and the remote web server. This prevents people from reading the contents of the web traffic between you and the server. They...
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    Re: Velostigmat for 8x10

    Looking through the Wollensak Catalogs, there are a few more focal lengths for Series IIs that are larger than 12":



    Lens Number
    Focal Length
    Film Size
    Catalogs
  8. Re: Hi : )!!! - Please suggest me GPC flatbed scanner

    I'm going to go a different tack here based on these requirements. For sharing, have you thought of just using a digital camera (like from a cell phone) to take a pick of the film? You could use...
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    Re: wildfire season already

    The SF Chronicle had a story today about a sequoia in Sequoia National Park that is still smoking from last year's fire. ...
  10. Re: No dumb questions here...What have I purchased?

    Can you measure the wooden size of the back? The one picture with the back looks like it might be a reducing back. You might have a 5x7" camera with a 4x5" back. I have a 5x7 Grover and the back...
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    Re: How to open old Gralab 450 for repair?

    If it is glue on the rotary switches, it is strong stuff. I have a 450 which I tried to work on. I tried pull one of the rotary switch handles off and ended up breaking the post off.

    -Darren
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    Re: Smoke smoke everywhere

    Press release today from the US Forest service "Forest Service Temporarily Closes Southern California National Forests, Adds Prohibitions in Others": ...
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    Re: Anyone else here on Instagram?

    Wouldn't this thread be better in another forum here like "Image Sharing (LF) & Discussion" or "Resources"?
  14. Re: Fungus on antique Lens: Can it be fixed?

    Even mistakes can become art. See Chris McCaw's Sunburn work. https://www.chrismccaw.com/sunburn

    I remember seeing a video of him taking a day shot with one of his home built ULF cameras with...
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    Re: Mountain Lion near Santa Cruz

    Yesterday there was a mountain lion sighting in San Francisco near Russian Hill

    https://www.sfgate.com/living-in-sf/article/Video-mountain-lion-wandering-in-San-Francisco-15344437.php

    -Darren
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    Re: Petzval in shutter

    actually, the Mamiya dual cable release would allow you to lift the mirror and then fire the shutter. You would just need to figure out the best way to go from the open shutter to close before you...
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    Re: Petzval in shutter

    The Lomo suggestion was more along the lines using it with a small format camera (handhold) over an RB.

    I had the same idea about using a Petzval on a RB; a while ago I acquired a 6" Darlot lens...
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    Re: Petzval in shutter

    What size lens are you thinking? Would it be something you could use the shutter out of an existing RB lens? If you go with an external shutter, what where your plans on mounting it to the RB?

    I...
  19. Re: The New Marketplace Rules are Too Restrictive

    Staring at me right in the face; I don't know how I missed that. thanks for pointing it out!

    -Darren
  20. Re: The New Marketplace Rules are Too Restrictive

    I looked the other day and found the rules in less than 10 minutes under the FAQ at https://www.largeformatphotography.info/forum/faq.php?faq=vb_faq

    Where did you look? I did a quick google...
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    Re: endless external HD shuffle Part deaux

    IKeep an eye out for the WD externals hard drives Currently when they go on sale the 12tb ones are like ~$185. 10tb version go for around $140-160, 8tb for around $120~130, and the 14tb for around...
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    Re: Easy alternative processes?

    I just checked in the book "OverExposure: Health Hazards in Photography" by Susan Shaw, 1983, and here is what is listed for potassium ferricyanide (Farmer's reducer):



    Potassium ferrocyanide...
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    Re: Easy alternative processes?

    I was told there was a little bit that comes off when removing it from the contact glass and "don't put your nose by the print" when you check or remove the print. We were printing in the sun so...
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    Re: Easy alternative processes?

    There are several companies who sell precoated cynotype paper. do a search for "sun print" on on amazon to get a list. there is one from UC Berkeley for ~$8 that includes 15 20x30cm sheets. i doubt...
  25. Re: Advice on a spare-time project? 4x4 back and holders

    Instead of trying to scale down a 4x5 camera, have you thought of looking at some 3 1/4 x 4 1/4 cameras and seeing if it would be easier to scale it up?

    -Darren
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    Re: Mountain Lion near Santa Cruz

    Another article: https://www.sfgate.com/news/article/Cupertino-park-closes-child-mountain-lion-injury-15061367.php

    This park is in Cupertino which is a bit away from Santa Cruz. There are plenty...
  27. Re: Paul Caponigro in Carmel, CA for lecture on February 8, 2020, 3-5 pm

    It was standing room only. Great presentation of some of his work and some stories behind them.

    -Darren
  28. Re: Does an affordable, available, non-plasmat 300mm-ish lens that covers 8x10 exist?

    Some lenses to consider keeping an eye out for. When they show up they are often in a Wollensak Alphax or Betax shutter. Not modern but I've found them to be fairly decent shutters.

    Wollensak...
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    Re: Monterey Cypress groves

    I enjoy the grove on the bluffs at Fitzgerald Marine Reserve.

    -Darren
  30. Re: Which shutters will suit this casket set?

    DoWhat are the measurements of the threads on the lens cells? Can you also measure the thickness of the old shutter where the elements screw in?

    -Darren
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    Re: Some Soft Focus Lens Sales Information

    I was not the winner. I am not surprised that ebay has done what it can to hide the true sell value. Thanks for the update.

    -Darren
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    Re: Some Soft Focus Lens Sales Information

    Kalosat IB with original box but without flange.

    BIN at $3000 USD. Item 292324365334
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    Re: New fire in Yosemite----

    Inciweb page on the Mission fire: https://inciweb.nwcg.gov/incident/5588/

    -Darren
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    Re: Firefox security warning

    I believe Firefox considers user passwords as sensitive data.

    -Darren
  35. Re: The New Marketplace Rules are Too Restrictive

    I find the new rules for the FS section fine. I am a little disappointed at the number of replies to this thread in comparison to the rest of the sub-forums I subscribe to here.

    As a reminder to...
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    Re: Coverage of Three Old Lenses

    Betax 5 is the shutter and size. What is the maximum aperture of this lens? That would help determine what series it is and what coverage it has. It should be able to do at least 8x10".

    -Darren
  37. Re: For-Sale-Wanted Rules changes coming on 3 Apr 2016

    How does one close their own thread? I looked at some of my (really) old threads and I don't see an option to do that. Is that something that is going to be turned on during the maintenance?
    ...
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    Re: Linhof cameras before 1945

    I have what I think is a Linhof Standard 9x12cm. SN:13644 There are no back movements. Front movements include horizontal and vertical shift and you can tilt the top of the lens back. There are...
  39. Re: Wollensak 6"1/4 W.A. and Extreme W.A. aperture scale not equal to focal/iris

    I have seen a lot of Alphax #3 shutters that had f/3.5 apertures (from oscilloscope?) I want to say those were for 75mm lenses so the scale is probably way off. I have a Series III f/9.5 in an...
  40. Re: Going to the eastern sierra for fall colors.

    I was up at Lee Vining / Mono Lake this past weekend. I took Sonora Pass over and did not see any color on the west side until around 9000' though there was color down to ~8000' on the east side. ...
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