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  1. Re: What small lightweight lens for 4x5 backpacking?

    Maybe I do -- the tripod I use has "Sharman Camera Works San Francisco" on the top plate, where the camera or head would mount. It is 33" long unextended, and weighs about 3.5 pounds. In a pinch, it...
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    Re: RH Designs Zone Master II With MG V Paper

    I just switched from MGIV to MGV, and I use an RH Designs Analyser Pro and calibrated it for the new paper. I also re-calibrated it for the MGIV paper, and my values were different than what was...
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    Re: Lenses to fit inside a Busch Pressman

    Please ignore my reference to the 2 by 3 Pressman (Model C). I mis-read the original post.
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    Re: Lenses to fit inside a Busch Pressman

    Lots of info on Wollensaks here:

    https://alphaxbetax.com/wollensak-lens-and-shutter-compendium/

    I have a 2 by 3 Bush Pressman -- there is not much room for lenses, either across the lens board...
  5. Re: What small lightweight lens for 4x5 backpacking?

    Lens choice can shave a few ounces off the total weight of the pack, but its negligible compared to other choices. In my experience, it's the number of film holders carried that makes the most...
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    Re: Please help with this image

    The black strip on top could be a light leak, but the picture-side of the strip is quite distinct, so maybe not. To eliminate the possibility, put a sheet of photo paper in your holder and go through...
  7. Re: What small lightweight lens for 4x5 backpacking?

    The Kodak Wide Field Ektars are nice, for example the 135 mm, or 100 mm (no movements). For some reason, old Kodak lenses are expensive these days.
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    Re: MF (6x4.5,6x6,6x7,6x9,6x12) B&W film images sharing

    I am surprised that a Super Angulon can fit in a 2 by 3 Graphic. Very nice images, by the way. Was there a lot of smoke haze? The sky looks light given the red filter.
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    Re: The Setup and the Shot

    Here is one from this summer, on a ridge leading up to Cream Puff Peak. This peak is on the south edge of the Gros Ventre Mtns. in NW Wyoming. The scene is a re-take of an historic image by Eliot...
  10. Re: Is there such as thing as a modern, fast, compact 360 for 8x10?

    Thanks Vaughn, for tossing that redwood photo in -- very, very nice.
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    Re: Need Empty 4x5 Film Boxes

    I have many. Please PM me your address and I will send them to you.
  12. Re: ...photography and its relationship to state surveillance.

    Drew makes a good point -- I agree that Paglen is pushing a little bit too hard on the surveillance aspect. But he is not way out there. A good source for the history of these surveys is William H....
  13. Re: Krakatoa explodes The most powerful volcanic eruption in recorded history

    Do you really think people are gullible enough to believe that story? It defies the laws of projectile physics and common sense, unless the pumpkin piece floated there somehow like the tigers and...
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    Re: Leaf Shutter High Speed

    There seems to be a contradiction here. Although "there is lots of activity going on" with a 50% efficient shutter, such activity leads to less exposure than if the shutter was 100% efficient, as you...
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    Re: Leaf Shutter High Speed

    Thanks, I did not realize you were referring to the fastest shutter speeds only.

    Maybe I am missing something, but I wonder why manufacturers don't publish shutter efficiencies or the graphs...
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    Re: Leaf Shutter High Speed

    Why would a perfect measurement be necessarily triangular? This could be so for very fast shutter speeds, but not for slower ones (say 1/30 s or slower), unless the blades opening and closing time is...
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    Re: Leaf Shutter High Speed

    I agree, the time difference is very small may probably wrong, but I am not sure why. It could easily be 2X the 0.0002 measure, as 10 KHz cycle is 0.0001 s.

    My measurements could be biased to the...
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    Re: Leaf Shutter High Speed

    In the shutter tester I built, I use a phototransistor (a Vishay BPW85B) and it detects pulsed light through the lens at 10K Hz. There is a dramatic difference in amplitude in the signal...
  19. Re: Does Anyone have any experience with the RH Designs Analyser Pro? Any thoughts on

    I use one regularly, and it saves me a lot of time. One project requires me to switch papers (RC to FB), and having calibration on both papers allows for a quick, accurate switch to FB paper. I...
  20. Re: How To Test The Shutter On a Lens Intended for Use on a Graflex

    For any shutter, especially a leaf shutter, there are DIY shutter testers. I made one that uses pulsed light at 10,000 Hz from an LED that goes through the lens and hits a photo-transistor that...
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    Re: Meridian Model B 4x5

    The Meridian 45B serves me well. For lens boards, I cut 1/8" (0.125) aluminum flat stock to 4 by 4, then drill the appropriate hole with a hole saw on a drill. Some will say this is an extremely...
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    Re: Help me choose a camera to hike 2000+ miles

    After reading every post here, and after hiking hundreds of miles with a 4 by 5 in remote areas, my suggestion is DO NOT bring a 4 by 5 on the trip you are planning, given your objectives (stated...
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    Re: Aperture indicator not aligned

    This is not unusual. A given shutter can be used for different lenses, so the largest stop opening can exceed the lens diameter on the shorter-focal length, or smaller f-stop lenses. Most if not all...
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    Re: Aperture indicator not aligned

    Another simple test is to compare exposure readings through the ground glass using two different lenses (assuming you have another besides the one you just bought). Use a uniform target, like a wall,...
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    Re: slot canyon support

    +1
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    Re: Missing exposure equation

    The general equation in Excel is:

    =log(X,b)

    where X is the value to be logged, and b is the log's base

    in this case, X is the Exposure factor, b = 2 is the log's base

    The calculated...
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    Re: Practical Movements for 90mm 4x5

    Architectural work is the most demanding, and some rise and swing can be useful as well. Once the mechanism for a movement is included in the design, it seems like a reasonable amount of adjustment...
  28. Re: Your Best Photograph from the Previous Month - Critique and Discussion Encouraged

    Okay, I think I know what you did, except for "rise/fall". (which one? I guess rise).

    With such tall objects, it may have been impossible to have their tops sharp when using tilt (assuming...
  29. Re: Your Best Photograph from the Previous Month - Critique and Discussion Encouraged

    Nice one!

    I used to live on the Palouse, over 40 years ago now, so this brings back memories.

    One question though -- did you use any movements, or was the film plane tilted? The silo at right...
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    Re: My Set Up for Film Holder Labels

    Most of my photos are work-related (documentation, not art), and location, date, and time are very important, so unless I am on a casual trip, I take a notebook with me. I also record focal length,...
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    Re: My Set Up for Film Holder Labels

    What do Tv and R/F stand for?
  32. Re: Your Best Photograph from the Previous Month - Critique and Discussion Encouraged

    Thanks for posting such a strikingly good image. I like the strong geometric aspect to it, and the strong lighting too. The only thing I can think of that may improve it is a wider field of view -- I...
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    Re: Me, my inexperienced butt, and the backcountry

    No, I have not been there. My nephew has, though.
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    Re: Me, my inexperienced butt, and the backcountry

    Is the ranch the Philmont?
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    Re: Me, my inexperienced butt, and the backcountry

    Four 1/4 pounds is less than I thought it would weigh. Some of the folding 4 by 5's weigh more than this (mine weighs 6.5, with lens (135 mm Kodak WF Ektar), no rangefinder, and a quick-connect plate...
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    Re: Me, my inexperienced butt, and the backcountry

    Sorry, I did not realize you were at the ranch last year. You obviously know all about the weather there.

    I have several empty 4 by 5 boxes; if you need them, let me know.

    Regarding the...
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    Re: Me, my inexperienced butt, and the backcountry

    Some suggestions:

    Ask if there is a room that could be made dark enough to load film, at least. This will be much easier at night, before the moon is up, assuming they don't have bright outdoor...
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    Re: Bitten by the LF Bug!

    +1
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    Re: Large Format Landscapes

    Coyote Buttes, in the Paria Canyon-Vermilion Cliffs Wilderness? Very nice image, by the way.
  40. Re: Your Best Photograph from the Previous Month - Critique and Discussion Encouraged

    The link does not work for me -- I get an error message saying "Invalid Attachment specified. If you followed a valid link, please notify the administrator"
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