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Thread: Petzval lens question to the experts

  1. #11

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    Sep 2007
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    AZ
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    Re: Petzval lens question to the experts

    True. I was just pointing out the stamp appears to be as found on CC Harrisons, in a few instances known. And I agree, it's in exactly the same place/orientation as Paul's old lens.

  2. #12

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    Jan 2009
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    Denmark
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    Re: Petzval lens question to the experts

    I thought Harrison because of the heavy duty nature but not competant to say with any certainty.

    Well done, especialy if the special angled decoration matches!

  3. #13

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    Nov 2007
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    Re: Petzval lens question to the experts

    Quote Originally Posted by anton orlov View Post
    Nah, Jim, I mean the might have taken out rack and pinion and cut the slot, but I doubt they would change out the glass...

    So here are the images from the front - note in the last shot that you can see the Waterhouse baffles (badly corroded) and a white thin strip around the edge of the glass - that's not separation, but the very inner edge of that piece of paper I mentioned that separates the front two elements)
    Considering the amount of soldering and reworking that was done they may have changed out the glass,
    I'm a noob at old lenses, I defer to CCharrison, Garrett, and Steven Tribe, but in my collecting
    and using old lenses I've never encountered paper shims for separating lens elements.

  4. #14

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    Feb 2006
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    San Diego, CA
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    Re: Petzval lens question to the experts

    Thank you all for the input - it's really fascinating and helpful.

    Garrett, the knurling by the flange is indeed straight, but on the retainers for the lens groups it's sideways.

    I guess it is possible that the lens elements were switched out, but I wonder who in their right mind would do that AND put a non-cemented pair in the front. Who knows though, maybe the lens was rolled over by a wagon or stepped on by a horse and glass broke along with the focusing mechanism and they had the local smith and optician bring it back to life.

    I'm on my way right now to see what kind of an image it throws, will post a sample later today.

  5. #15

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    Feb 2006
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    San Diego, CA
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    79

    Re: Petzval lens question to the experts

    For those who care here are the test plates from it.

    First one wide open and second one with an f9 or so Waterhouse stop I fashioned for it. It's not the sharpest lens I've ever seen, but if someone did replace the glass they did a very decent job at it.

    Click image for larger version. 

Name:	Harrison_Test_Open_1.jpg 
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ID:	141585

    Click image for larger version. 

Name:	Harrison_Test_f8_1.jpg 
Views:	23 
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ID:	141586

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