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  1. Replies
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    Re: Actual zone system

    I liked reading the David Vestal book, but it doesn't mention Zone System at all. He also didn't know what we know now about Selenium cell light meters. They are all losing sensitivity.

    What light...
  2. Re: Luna-pro advice. Which ones do you like and why?

    I am currently working on two Luna Pro (the original).

    One has factory battery conversion and came to life after I repaired the obvious battery chamber issue (Corrosion ruined the tip of the...
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    Re: Methods for testing unknown shutters?

    You can get apps for your phone that listen to the microphone and graph the click bzzzz clack and the time between can easily indicate 1 second to 1/10 second accuracy.

    In case you want to find...
  4. Re: Stouffer's 4x5 step wedge for exposing negative?

    Regarding the idea to "mount the step wedge to the translucent sheet and focus at 1:1"...

    Some people do it that way.

    But the image of a step-wedge starting with 1000:1 contrast, after...
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    Re: Zone VI Cold Light

    I agree with Mark Sampson it is the best light source I have found for Omega DII / D2. It's very useful.
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    Re: Ilford Printing Paper Costs Blowout.

    So far my luck has been good. Of all the Galerie paper I have bought online, only one box had any significant fog. And it was a box the seller threw in for free.
    If it has fog, I'll use it for...
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    Re: Ilford Printing Paper Costs Blowout.

    In a panic, I just snapped some up off eBay. 11x14 little less than a dollar a sheet.
    For better or worse at this rate I'll take my chances.
  8. Re: Probably a dumb question - how to see or adjust LF aperture from behind the came

    Then there was the time my son held the back of my belt as I leaned over the cliff.

    I was using a rangefinder so all I had to do was compose and shoot. The focus, f/stop and shutter speed were...
  9. Re: Weston Nudes and the Friends of Photography

    I'm guessing Minor White drew the hand/lens logo. It's his style.
  10. Re: Weston Nudes and the Friends of Photography

    I saw him at Caltech. I think it was a high school field trip.
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    Re: DIY Sensitometer

    Looks like it works!
  12. Re: Are print drums a more practical way to print big in a bathroom?

    Can you show us your tiny space? Maybe there's a dry space option you haven't considered.
    I can't imagine not having enough room for at least two 11x14 trays... Dev and Fix. Then take out to the...
  13. Re: Lina Bessonova Interview with Paula Chamlee (YouTube)

    I like the thought in what Paula Chamlee said about looking at the groundglass... "see the world for how it looks versus how it is."

    Maybe this is where I have gone wrong by shooting a...
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    Re: Linhof Tripod and Pan-Tilt Head

    It's definitely the one to get if you don't already have it.
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    Re: New Autofocus 4x5"

    That would be sweet! Can it refocus... say if you aim at subject's eye, recompose but they move slightly back, you'll re-focus on their eye because the focus aim followed?
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    Re: Point Reyes Advice?

    Here's some of the HAER photos of the radio stations...

    https://www.loc.gov/resource/hhh.ca3143.photos?st=gallery
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    Re: Point Reyes Advice?

    I was thinking going inside, getting close-ups of the gear. Didn't one of us do that?
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    Re: Point Reyes Advice?

    Please make sure you have enough water.

    Also take the keys to your car. We had a friend leave them in his friend's car glove compartment thinking it would be fine. It was but his friend's car was...
  19. Re: Pentax V, three cell meter light adjustment or replacement.

    I don't know if a brighter bulb would hurt!
  20. Re: BTZS / TMAX / XTOL 1:1 Film Density Test Question

    Thanks! Got the data from your spreadsheet! I like to remove B+F when graphing, but BTZS wants you to include it. Ralph Lambrecht also has a spreadsheet to accompany Way Beyond Monochrome which is...
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    Re: BTZS Tubes in daylight

    It took about 10 minutes to get the image density built-up by normal developing... how much additional do you think happens in a few seconds? Not enough to measure.

    Alkaline fixer is the...
  22. Re: BTZS / TMAX / XTOL 1:1 Film Density Test Question

    mpålsson,

    You say you saw: "ISO triangle came out to be very close to the 13’30” curve"

    That's the developing time I get when I meet the ISO triangle for TMAX 100, TMY2 and TRI-X in D-76 1:1....
  23. Re: Pentax V, three cell meter light adjustment or replacement.

    I've joined the discussion from time to time... There are lots of complaints about the light, I know.

    Be sure to judge the bulb in light levels so low that the spot you are reading has a scale...
  24. Re: Question for chemistry--especially D-23--experts

    One day you will be facing a deadline (like a friend's birthday and you want to give them a portrait), on your last batch of chemicals, and all the camera stores are closed...
  25. Re: Question for chemistry--especially D-23--experts

    If you have a sensitometer and densitometer, you can figure it out. Practically everyone has said it's not worth it and I agree.

    But I have done a similar test and know how to do what you are...
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    Re: Foot candle to aperture and ISO.

    It is the reciprocal, and you want the square root of the arithmetic film speed. And right Weston meters indicate candela per square foot. Shutters mostly leave off the 1/ . If there is time the...
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    Re: Foot candle to aperture and ISO.

    Right. Since a Weston Master indicates that:

    Take the square root of the film speed and use that for your f/stop.
    When you have taken an average reading with a Weston Master light meter...
    Set...
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    Re: Zeiss Protar 8.5cm f18 Bill Brandt lens

    There is an ugly one on eBay for under $100 - worth the experiment!
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    Re: Zeiss Protar 8.5cm f18 Bill Brandt lens

    I got a Bausch & Lomb 4x5 Protar V 3 1/2 IN f/18 for the purpose of experimenting in the style of Bill Brandt

    Think he used 5x7 film in his old detective camera though - which would take in more...
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    Re: Foot candle to aperture and ISO.

    Ansel Adams tells how to convert foot candles to f/stops and shutter speeds in your head.

    Use the square root of the film speed for the f/stop and use the footcandles for the shutter speed.
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    Re: water filters

    Haa exactly! Used to have a reverse osmosis filter and this served well for the final rinse. But after a couple leaks I decided I didn't want to take any more swim tests and I shut the thing off and...
  32. Re: Precision and Accuracy in LF Photography: How much is enough?

    @jp I like the precision/accuracy scale. The one with no precision and no accuracy should have fewer marks on the target though (because some will miss the entire dartboard).

    I see I fall into the...
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    Re: Exposing A Stouffer T2115 Onto Film

    Tape the Stouffer strip to a 4x5 piece of black construction paper with a stripe cut out of it to let the light through the strip.
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    Re: Removal of graphite from aperture blades

    Just don't use those orange capacitors that Nakamichi used in their cassette decks. Use the capacitors that EG&G used in their sensitometers.
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    Re: Mounting without a press?

    I recommend Yes! A Stick Flat glue. I keep this paste in my finishing box.

    Takes a bit of practice but is quite good fo an occasional mounting
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    Re: SEI Exposure Photometer

    Are you sure the bulb is not in there? If it is not there you will see a hole where the bulb would go. You could aim a bright flashlight in there. If the ammeter needle moves, even just a little, you...
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    Re: "vintage" safe light

    Nice - box too! I've been watching for one of these, didn't think further into what would happen if I lit it.
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    Re: Developing Tri X 320 (4x5) in D76 1:1

    I made the same mistake Stearman. Anyway develop it more than 9 but less than 13:30 (I develop all my film too long compared to most other people) and you'll be fine.
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    Re: Photographing stars, 4x5

    The LEAH telescope at Chabot Observatory has Graflok back.
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    Re: Developing Tri X 320 (4x5) in D76 1:1

    OK I see 9 minutes in massive dev. They don't track aim contrasts so it's hard to tell. I use tray with several sheets shuffled. That extends the developing time because each sheet only sees fresh...
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