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  1. Re: Kodak Aero Ektar 6,3/48" Largest lens I have seen

    The Aero Ektars were made from glass that is mildly radioactive. However, given the size of this one, you might want to be careful with it.
    Dave B.
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    Re: AeroEktar Aero-Ektar night shutter

    The Aero-Ektars were made with mildly radioactive glass. Nothing too serious but worth keeping in mind as you play with it. You might want to keep it away from the kids or the grandkids. You can...
  3. Re: Production dates of Schneider 90mm F/6.8-Angulon

    While you won't steal the lens from KEH, you will get an honest appraisal of its condition by people who know what they are doing, absolute assurance you will see the lens after you send in the money...
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    Re: Removing Aero Ektar from K-24 aerial camera

    I presume you know these lenses are mildly radioactive. Not a super big deal but worth being careful with. Lots of posts here on the subject.
    Good luck,
    Dave B.
  5. Thread: Miroslav Tichư

    by Dave_B
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    Miroslav Tichư

    It was a nice Sunday in NYC and we went to the International Center of Photography. There were a number of interesting exhibits there but the one that got my attention was by Miroslav Tichư. All...
  6. Thread: Making a lens

    by Dave_B
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    Re: Making a lens

    We had a long thread on this a couple of years ago. The issue is are you trying to make something that will cost you less than you could buy it for or are you trying to build a lens for the fun of...
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    Re: Richard Learoyd and his Camera Obscura Prints

    I recommend that you try to see some of his images in person. Looking at them on a website really misses what they are all about. The compelling feature is the quality of the images and their...
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    Re: Richard Learoyd and his Camera Obscura Prints

    It's more than life size. Roughly 4'x6'.
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    Re: Richard Learoyd and his Camera Obscura Prints

    Yes, that was the photo. In person the details are amazing, like no print you have ever seen from a negative. The ICP exhibit was quite interesting but I am a fan and go whenever they have a new...
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    Richard Learoyd and his Camera Obscura Prints

    Folks:
    It was a sunny day in NYC and we visited the International Center for Photography which we do on occasion. There was an amazing photo there made by Richard Learoyd where he used a room-sized...
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    Re: lens wrench alternative?

    For years I used the stamped metal wrench made by Toyo. Rodenstock also makes one. I've also used the wrench made up of two vertical rods with drilled holes for cross pieces. This last one is...
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    Re: Lens comparison (or review) article

    Size, weight, focal length, aperture, manufacturer, coatings, contrast, bokeh, price new and used, filter sizes, lens cap sizes, resolution at different apertures and at different places in the image...
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    Re: Voltage stabilizer

    If you are handy with a soldering iron, another low cost possibility is an Omega enlarger power supply. There are a couple you could consider. The first is their Chromegatrol that has a...
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    Re: Compact metal Field camera

    The Toyo is built like a brick s___house. It will do everything you need a camera to do and your great-grandchildren will be able to use it (if anyone still makes film then....). I love mine and it...
  15. Thread: Tektol

    by Dave_B
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    2,725

    Re: Tektol

    Guys:
    Thanks for the help. I think I'll give it a try.
    Dave B.
  16. Thread: Tektol

    by Dave_B
    Replies
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    2,725

    Tektol

    Has anyone here tried Tektol as a paper developer? A search comes up empty. The folks who make/sell it claim that it is the photographic paper version of Kodak XTOL, e.g. a low toxicity developer...
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    Re: Pushed TMAX 100 compared to TMAX 400

    Thank you all for your advice. I will give TMAX 400 a shot on my next trip.
    Dave B.
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    Pushed TMAX 100 compared to TMAX 400

    Folks:
    Does anyone have any idea how TMAX 100 pushed two stops compares with TMAX 400 processed normally? If you never need to go beyond an ISO of 400, is it worth carrying two types of film as...
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    Re: instant fuji film usage

    yep
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    Re: Are photographers loners?

    yes^2*







    * yes squared for all you english majors out there....
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    Re: Free to a Good Home......

    This now has a new home.
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    Re: do old cameras have value

    They are worthless and dangerous. If you had one in your house you might be tempted to take pictures with it and that would start you on the road to perdition and financial ruin. You should send it...
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    Re: Free to a Good Home......

    I found one on Ebay. It is a Beseler 45 lensboard. Still available if anyone wants it.
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    Free to a Good Home......

    I have a lens plate for an unknown enlarger. It came attached to a lens I bought. The holder has a flat, square blackened aluminum plate that is four inches on a side, it has a raised top-hat that...
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    Re: Super Angulon 90mm XL v. everything else

    I have this lens. It is an amazing lens in terms of performance but a real beast to use. It is large, heavy and won't fit into some cameras as mentioned above. Other smaller lenses such as my two...
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    Re: Do I really need cable releases?

    Some of us have learned how to use our tongues to trip the shutter. Fingers are pretty crude in comparison with the sense of touch and feel you can get with your tongue. It takes a few hundred...
  27. Re: Coating lens elements on wafer fab CVD equipment?

    The wavelength of light is too small for something like this to work. The films need to be a fraction of a micron thick, accurate to ~2-5% and uniformly applied over the entire lens.
  28. Re: Coating lens elements on wafer fab CVD equipment?

    This is a hard thing to do correctly. The first issue is single or multi layers. You need to decide what stack of films and materials you want to use. Issues that need to be considered are finding...
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    Re: Film suggestions please

    IMHO, whatever you shoot, you should bracket every shot +/- 1 stop. You might decide to initially only process the shots you think were on the money wrt exposure but having those other sheets of...
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    Re: Refrigerated Film Storage

    Won't it last four times longer?
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    Re: Refrigerated Film Storage

    The deterioration of film is a chemical reaction. Chemical reactions are speeded up at higher temperatures and slowed at lower temperatures. In general, the lower the temperature, the slower the...
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    Re: Enlarger Question

    Guys:
    Thanks for the input. The Beseler it is. Gem, I was (he sheepishly admits) thinking about buying the equipment new. I have not had much luck with electronics that have been sitting in a...
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    Enlarger Question

    Folks:
    I've lost my mind and am planning on building a darkroom while the rest of the world is abandoning them in droves. The main reason for doing this is that in ten years it won't be possible...
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    Re: Jobo Processors and Delta Sinks?

    Folks:
    Thanks for your replies. It looks like this is the way I will go.
    Dave B.
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    Jobo Processors and Delta Sinks?

    Folks:
    I am in the process of setting up a new darkroom with a Jobo CPA-2 processor. The Delta ABS sinks look pretty nice and was thinking about getting one, probably the model with two sinks, a...
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    Re: First rate E6 and C41 labs in USA?

    Photocraft in Boulder gets my vote (and my business). Totally professional.
  37. Thread: #%$& Glasses

    by Dave_B
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    Re: #%$& Glasses

    This is an interesting comment. I always assumed that glasses were optimized to focus at a hyperfocal distance and then worked OK from there to infinity. Does anyone know if they actually do this...
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    Re: Lenses for 10x8"

    http://www.largeformatphotography.info/lenses/LF8x10in.html

    This information is elsewhere on this site. The link above is an example. The search function can help you find it. Good luck.
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    Re: What lens are you missing?

    It may be my imagination but it seems to me that the usually congenial nature of this forum has recently been replaced with a lot of generally unpleasant behavior. When even kindly old souls like...
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    Re: Brilliant Ground Glass

    If you are going to buy/use these types of polishing powders, you need to use a mask and be very careful about breathing the dust. The long term health hazards can be similar to those one finds with...
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