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  1. Re: Film curves and density range in reversal development

    reversal uses high energy developers and will make that straight line section much shorter for stops of exposure--contrast increases tremendously and the straight line portion from clear to black is...
  2. Re: Any telephoto (360mm or above) recommendations for a 4x5 (TK45S)?

    I've used 360 tele xenar, 360 tele arton and 380 15" tele raptar (optar). All 3 provide very good coverage, good contrast and sharpness for my tastes. The 15" tele raptar is my favorite, though.
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    Re: Carl Zeiss Jena tessar 17.5cm info??

    I just found this when researching another zeiss lens: https://www.arnecroell.com/czj.pdf

    He has compiled a lot of information in this paper and it may help you. I could only find 165mm and 180mm...
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    Re: converting a apo tessar to a triplet

    Thanks! So it is a "for real" tessar. I also found this article: https://www.arnecroell.com/czj.pdf. Thank you for Mr. Arnie Croll for this information.

    This article has a whole section on these...
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    Re: converting a apo tessar to a triplet

    Thanks everyone.

    Polishing sounds maybe better if I can't get it apart.

    But great suggestion--Yes--I totally forgot about the lens close up diopters I have somewhere. Hopefully the focal...
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    converting a apo tessar to a triplet

    Long story short: I just inherited a junk 60cm apo tessar. nice shape except for the dust and the front element which looks like it was cleaned a LOT over the years without much care. So the front...
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    Re: ULF Walk-in Camera?

    the barrel version of the 1100 xxl is f14--so it buys you a bit over a stop of light. You can do direct positives on regular photographic paper if you use reversal bleach and develop as...
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    Re: Petzval barrel repair - Light Traps

    telescope flocking material. they make it in many varieties: self adhesive paper, tape, board, foil.

    https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=190
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    Re: NEED HELP! All my negs are empty!

    Glad to see things finally worked out for you. I'll bet you're the first one to suggest checking the synch setting next time someone has the same problem.
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    Re: NEED HELP! All my negs are empty!

    Stumped!
    You can try to open the shutter on "B" then pop the strobe, then close the shutter. Just test to make sure your "B" setting works. That way you ensure to get the full power of the flash pop...
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    Re: NEED HELP! All my negs are empty!

    film is being loaded BACKWARDS, perhaps??? check your film holders.
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    Re: NEED HELP! All my negs are empty!

    Sending it out kind of almost eliminates a one-person processing error, right? It's an assumption to be sure, but a pretty reasonable one that at least one of the sheets was processed correctly...
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    Re: NEED HELP! All my negs are empty!

    Did you leave the dark slide in the film holder when you shot the picture? You can't have left the lens cap on?
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    Re: Fresh dry plates in a variety of sizes

    I have a set of the hasselblad cut film holders and there is very little thickness for plates. The slavich holographic plates in 2.5" size, for example, are too thick to fit in them. I no longer have...
  15. Re: Seeking Monorails for a 16x20, Also Will a 4x5 Front Standard Work?

    That one from glennview is a different rail. The one everyone's talking about is the 1 inch square rail that was used on the original cambos--this is what makes it desirable--the rail can be...
  16. Re: Seeking Monorails for a 16x20, Also Will a 4x5 Front Standard Work?

    For long extensions, home depot sells steel and aluminum 1 inch square rods that work with the cambo square rail drive. Aluminum works to about 4 feet extension and then you must got to steel....
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    Re: Lens to produce vignetted images on 4x5

    Any lens will work. All you have to do is black out a uv filter around the periphery deep enough to get the desired effect on the ground glass. Or just cut out an aperture on a piece of black paper...
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    Re: A light tripod for 810?

    Believe it or not, I've been using a tiltall with a zone 6 field camera for almost 20 years.
  19. Re: Routing the pneumatic connection on a Packard that's as big as the lensboard

    Yes, drill a hole through the shutter just big enough to pull the hose through. I am not home and can't send you a pic--but it's not difficult--disassemble the packard shutter and just make sure you...
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    Re: Polaroid 405 holder image frame position

    The film holder designed for use for the polaroid MP4 is centered--you can use it in most 4x5 cameras if you pull off the two side pins.
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    Re: Source of hot water

    I've seen very small inline aquarium heaters that may do the job for very small flow and small temperature rise--you won't need to heat all that much for darkroom use, so maybe one of those would be...
  22. Re: Developing B&W sheet film at home for a total beginner!

    In my experience, those tanks are hard to load, very cumbersome to use or agitate, and use a lot of chemistry. They work but will turn you off of home developing. For a beginner who wants to develop...
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    Re: Distortions Exposure and the ground glass

    That's not exactly what I said. But I understand what you're saying. It's a communication thing, so let's just say I think we are in agreement and leave it at that.

    My main issue got derailed and...
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    Re: Distortions Exposure and the ground glass

    I think so--you're forgetting the tilt I mentioned. Rise is the same as a camera movement plus a camera tilt--then you correct the standards back to parallel to the subject plane--can you picture...
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    Re: Distortions Exposure and the ground glass

    Perhaps it can be viewed this way:

    Regular camera movements seem to be pretty much like moving the camera in the x/y directions--up and down / left and right, and tilting back and forth. This...
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    Re: Distortions Exposure and the ground glass

    Correct--as far as I know, the only thing that camera movements do is allow a change in perspective or focus plane. I don't see how a camera movement would make a straight line appear to be curved.
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    Re: Distortions Exposure and the ground glass

    Yes--to accentuate the effect of perspective, the rule is the closer you are to the subject, the more perspective "distortion" is enhanced--so shorter focus lenses produce more effect than longer...
  28. Re: Cambo Revolving Back on Pacemaker Speed Graphic

    don't do it! the revolving won't work because the opening is not a square but a "landscape orientation" rectangle. If you revolve the back, you will get a 4" x 4" square image!
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    Re: Old 11x14 Super XX - Specific Experience?

    I had some old 8x10 super xx from the 80's, I think about 5 years ago. The stuff that was not in the sealed packets was bad, but the stuff in the sealed packet was totally good. I have no idea how it...
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    Re: LF Lenses Designed by Photographers

    Here's a photographer that markets his lenses:

    http://www.re-inventedphotoequip.com/Lenses.html

    First one that popped into my head.
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    Re: 11X14 Kodak Tri-X

    Here's something related to this order--it looks to be a local offer only--it says nothing about shipping.

    http://chicago.craigslist.org/chc/pho/5880092488.html
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    Re: Feedback on moderation

    It seems to function just fine the way it is. Although there are still instances of "armchair moderation" by those that disagree with some posts--they can hit the little "report" button, but they...
  33. Re: to the mods, does lowering a price on a FS item constitute a bump

    Please, moderators, do not listen to the naysayers. The enforcement of common sense and common courtesy rules are an improvement and a welcome reversal from the abuses that have gradually crept in...
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    Re: Modern Studio Camera Stand

    http://mammothcamera.com/mccacc.html

    A modern bi-post stand, custom designed to your needs.
  35. Re: Turner-Reich Gundelach : seeking opinion and info

    I just started to understand what separation is. I recently bought a protar because I thought I knew what I was doing. Now I feel like I've been made a fool because the protar double is supposedly...
  36. Re: Preventing foreign buyers on Ebay - good luck

    Wow. I am reading this and am shocked by the stuff people have to go through. And the "well known scams" that--let's face it--there's no way a person like me would even know about this kind of thing....
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    Re: Maplethorpe portrait of Doris Saatchie

    My eyes must be going. I don't see any diffusion at all, blacks or whites. It looks sharp to me. Can someone point out a feature which shows the diffusion of blacks to help me see what everybody else...
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    Impossible 8x10 film

    This one is for the Impossible 8x10 users:

    Can the Impossible 8x10 film fit in a standard 8x10 film holder?

    I ask because I don't have the very expensive Polaroid holder and processor, but do...
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    Re: post your trees!

    :):)
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    Re: Shooting directly up

    I'd agree that the mirror or prism solution would work best in some circumstances.
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