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  1. Re: Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    mhayashi: Thank you very much

    Kiwi7475: The Dallmeyer lens catalogue I've seen lists this lens as a 16 inch focal length. I think the difference in diameter is to do with the relative diameter as...
  2. Re: Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    mhayashi: please would you measure the thickness of your 3A WHS. I appreciate tolerances may be different but I'd like a reference starting point. Thanks.
  3. Re: Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    mhayashi, HUGE thanks for supplying this information. I really appreciate it.

    Now I'm a little confused. I thought the 3A was an F4 lens wide open but you have a stop marked F4. My lens wide open...
  4. Re: Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    Thanks, Steven.

    While we're discussing the 3A, I have a question about the rotating soft focus control on the rear of my version. When the rear element is screwed all the way in, the index screw...
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    Re: Heliar 21cm f/4.5 - barrel mounted

    Bernice, what are the mounts on the side and top of your front standard? Are they for holding a hot shoe spirit level? Thanks.
  6. Re: Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    Thanks, Steve.

    I've found this online calculator: http://calctool.org/CALC/phys/optics/f_NA

    Does this look correct? I've used Focal Length = 16 inches, Aperture diameter = 92mm (as measured...
  7. Re: Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    95mm wide. Thanks.
  8. Anyone own Dallmeyer 3A waterhouse stops? Aperture size help needed

    I'm looking for aperture hole sizes so that I can have waterhouse stops made for my Dallmeyer 3A. Does anyone own a set they can measure, please?

    I've made a dummy from card and measured the...
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    Re: Shen Hao TZ45IIA and Schneider 90mm lens

    Please would you share how you managed to get a 90mm lens to work. I have a bag bellows but the problem I'm seeing is getting the front and rear standards physically close enough which is not down to...
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    Re: Intrepid 8x10 experiences?

    Thanks for the video Peter. I watched it before placing my order for a Mark II and mentioned it to Intrepid via Twitter. The reply I got back said they had updated their design to make film holder...
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    Re: How to unscrew a stuck lens element...

    Hey Alex,

    I'm in the same situation with a stuck rear element on a Dallmeyer 3B. I tried this method but the whole rear group of the lens turns. I've tried to hold it firm with a gator grip rubber...
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    Re: de vere 504 varicon

    I've been given a De Vere 504 enlarger with a Varicon head but there's no power supply or timer. The lead from my Varicon has a kettle style plug on the end so I'm stumped about what I need to get...
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