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    Re: Lens Not Focusing, What is the Cause?

    Yes it is on a 4x5.

    The 1m test was just a test to see if I could get a clear image. In reality I will have the camera further back so the entire subject is on the screen, I will test this in the...
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    Re: Lens Not Focusing, What is the Cause?

    This did cross my mind as well but it was late and I ran out of time when I did the simple test. At 1m I was not getting the entire flower arrangement on the screen so I'll do more comprehensive...
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    Re: Lens Not Focusing, What is the Cause?

    Thanks Bob and Domaz. I did this and achieved a sharp image at about 130mm distance. Next I remounted the lens on a Horseman rail camera and was able to focus on a bunch of flowers. It may be that...
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    Re: Lens Not Focusing, What is the Cause?

    Yes, I think so. It is interesting the rear element has all the same moldings around the outside of the barrel as the front one, which probably means it is Rodenstock but from a different lens. Would...
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    Re: Lens Not Focusing, What is the Cause?

    I'm going to mount the lens on a different camera with a long bellows to see if that helps, but I can't see why given a 135mm lens works perfectly well on the other camera.
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    Lens Not Focusing, What is the Cause?

    Recently I bought a Sironar N 120mm. I only got around to mounting and using it yesterday. What I found is that it will not focus unless I have the lens practically on top of the subject and the lens...
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    Cooke Lens Questionable?

    Looking for a 5x7 on fleabay when I came across this camera (item 223476836639) with the Cooke lens attached. Seller says lens is 8.5in, f4.5, series III. Such a lens seems to come from a casket set,...
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    Re: My DIY Repair of Cooke IIA f3.5 Lens

    More investigation needed.
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    Re: My DIY Repair of Cooke IIA f3.5 Lens

    I didn't get that post when I did a search. We dealt with some similar issues, especially the placement of the last few blades which required delicate precision, then again I didn't have to make new...
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    My DIY Repair of Cooke IIA f3.5 Lens

    About six weeks ago I started posting about how to dismantle a Cooke IIA lens. When this lens arrived it was completely seized. Various posts found here and elsewhere talked about this problem and...
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    Re: Problem with aperture ring on Cooke Triplet

    After many hours toiling away I've finally got the lens back together. I'll post some photos of the repair work on the DIY thread when I get a chance. Getting all the blades back into place was the...
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    Re: Problem with aperture ring on Cooke Triplet

    This has become an obsession and case study in perseverance. I've completely dismantled the lens. Some of the blades are warped, bent in places, mighty ugly, my heart sunk to my feet. My first...
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    Re: Problem with aperture ring on Cooke Triplet

    This is proving to be more difficult that expected. Cannot budge it with this method either. I'm going to have to resort to more extreme/forceful methods with the chance I will damage the blades...
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    Re: Problem with aperture ring on Cooke Triplet

    Cheers Jim, I'll give that very technical method a go.
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    Re: Problem with aperture ring on Cooke Triplet

    Well using solvent didn't budge anything so I took out the two screws which allowed me to take off the front external barrel that also has the aperture ring attached to it. This left two cylinders...
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    Re: Problem with aperture ring on Cooke Triplet

    Thanks Jim, I'll see if I can get some of this stuff.
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    Re: Problem with aperture ring on Cooke Triplet

    Can this thread be moved to DIY by a moderator please
  18. Replies
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    Re: Problem with aperture ring on Cooke Triplet

    The blades look to be in pretty good condition, no sign of damage or pins missing, everything seems in order. The whole lens is in great order excepting the aperture ring is seized.

    I'll give the...
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    Re: Problem with aperture ring on Cooke Triplet

    Doh, stupid me, the aperture ring hasn't been removed, it is the problem and won't turn. I removed the front and rear elements.

    I've decided to put a small amount of Zippo lighter fluid on the...
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    Re: Problem with aperture ring on Cooke Triplet

    I've noticed there are two small screws on the barrel just behind the flange. One appears to be locking pin, perhaps could be the one that moves the iris blade mechanism if it was working because I...
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    Problem with aperture ring on Cooke Triplet

    The aperture ring on a Cooke Triplet (barrel lens) I have received is siezed, it won't budge. First of all I'm not sure what causes this, and more importantly can it be fixed? There's no external...
  22. Re: Do all Cooke Series IIA have difussion mechanism?

    If correct that's useful to know, is there anything unique or different about this lens then?
  23. Re: Do all Cooke Series IIA have difussion mechanism?

    Thanks Steven, that's useful info on the options with the series II? Cooke lenses. I had a IIA as my first choice but maybe they will be too difficult to find or too expensive. I'll have a look...
  24. Do all Cooke Series IIA have difussion mechanism?

    I'm interested in finding and maybe buying a Cooke Series IIA lens as long as it is not madly expensive. Do they all have the difussion mechanism built into them? Most of the comments on here and...
  25. Does Sinar Shutter Fit 8x10 Arca Swiss F-Metric?

    Wondering if a Sinar shutter will fit my 8x10 Arca Swiss F-Metric before I go out and buy it?

    Thanks
  26. Replies
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    Re: Some Soft Focus Lens Sales Information

    Cheers Steven, yes mine is missing one knob, the soft focus one, and the other is different to what I have seen, but it looks to be made for the lens, it's aluminium but is ribbed and cylindrical...
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    Re: Some Soft Focus Lens Sales Information

    This is probably the wrong thread for my question given it is not for sale or recently sold so I'll move it elsewhere.
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    Re: Some Soft Focus Lens Sales Information

    I bought this lens last July noted by Mark on this thread:

    $## for a Series VI 8x10 f/5.6 13.1 inch Cooke Portrait Lens. From the engraving style, it may be a very early one,

    It had so much...
  29. Thread: Nude

    by bc_69
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    Re: Nude

    Her face, it draws you into her deep blank classical gaze. The second one is a fine image, but the first one for me though is compelling, it has a commanding powerful presence which has to do with...
  30. Re: Images shot on X-ray film

    Ok, well that sounds simple enough and if I get close to the quality of your image I will be more than happy. Thanks for your insights that has removed some of the mystique with x-ray.
  31. Re: Images shot on X-ray film

    Very nice indeed, what did you rate the film at? Not trying to pry but I have some x-ray film and am looking to understand how to get the best results with it, ie. exposure times, appropriate...
  32. Thread: Nude

    by bc_69
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    Re: Nude

    Classic and wonderful old world pose by your model. I like the hands focus, strong character along with the face. If she was covered it would be more outstanding IMO.
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    Re: Images of mistakes - good or bad..

    This photo appeared in the Technique and Style thread when I couldn't work out what the begeezus had gone wrong. Anyway it caused some interest with the unusual effect obtained from a flawed...
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    Re: Calibration vs. Consistency

    I had a very similar conversation with someone I bought a lens off. When I received it the times were off, you could tell without having it tested. I sent an email to him complaining he did not...
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    Re: What has gone wrong here??

    As far as I can tell nothing is in there to crater the film. The successful scan is very low resolution so doesn't give a true indication, but as far as I can tell there are now no bats flying across...
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    Re: What has gone wrong here??

    Yes, a one off run, could be my signature shots :o
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    Re: What has gone wrong here??

    Film was scanned the correct side up.
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    Re: What has gone wrong here??

    The emulsion is missing where the spots are, which indicates that something was stuck to it and has been removed or it has dissolved. Also of interest is how evenly spread the spots are across the...
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    Re: What has gone wrong here??

    I'm not sure if this is also relevant, but I also made sure the water was heated to 20 degrees, with the first two sheets one wasn't at all, and the other minimally, with no agitation.

    bc
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    Re: What has gone wrong here??

    Ok, I believe the culprit has been unmasked. I did two tests, one in an expert drum and the other in a tray. Before mixing the solutions I made a point of pouring some fixer into a clear bottle....
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