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  1. #1

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    Tiny Tiny Petzval lens?

    I wasn't sure where to put this post, but I thought the best folks to answer a petzval lens question would be here in the LF forum section.
    I have purchased a couple of the wee petzval lenses from Jim Galli. I adapted them to my pentax 67 using parts from Lowes. They work better than expected (I have posted a few images and pics of the first lens here in the past). I'm so pleased with this setup, I can't stand it. You can see many images made with this setup on my website.

    Before I ask my question, I'll say that I have cameras from 35mm to 12x20 and I love them all for various reasons. The big cameras generally stay at home due to my physical limitations. A year ago I had a double lung transplant, and although I'm doing great, I still cannot lug a huge camera around. The MF setup I cobbled together is everything I ever wanted as a great compromise.

    My wife and I are going to Italy for two weeks in June and early July. I just cannot see taking the Pentax rig with me, and LF stuff is out of the question. I have back and ankle problems, and we will do a lot of walking, which just adds to the BS I have to deal with. I'm afraid I will have to go digital for this trip (please forgive me. I don't like it any more than you do ). This brings me to my crazy question:
    If I could figure out a way to have a 35mm version of my MF Pentax setup, I would be thrilled. Would anyone know a practical way (without a PhD in optics or mechanical engineering) to build a petzval lens that is small enough to get the desired edge effects on a 35mm camera?
    Has anyone ever done this, or do you think SK Grimes would build me a simple one mounted in a tube that I could fashion into a push/pull focusing setup? Another option would be buying the lens elements from Edmunds and making it myself. Unfortunately, I wouldn't know where to begin with this.

    Just brainstorming and wondering if anyone has any thoughts on the subject before I spin my wheels and start pursuing it further....

    Thanks,
    Steve
    www.scdowellphoto.com

  2. #2

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    Check out the Lensbaby's, I don't know if they are actually a Petzval design, but they produce a similar sharp center result, from what I've seen in the ads.

  3. #3

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    The trouble with the lensbabies is that they have a curved field of focus. Worthless stuff. I have one.
    Begged them for a flat field focus optics but so far nothing......

    If you have the tiny's mounted on 6x7 mounts think about this:

    lens > 6x7 to pentax 35 adapterring > adapter ring to DSRL.
    It should work !

    Peter

  4. #4
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    Back in December I saw Jim selling a selling a petzval that was small enough to be shot with a digital. So you can definitely get one for your use, although it seems like a rarity.

  5. #5

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    Peter,
    Thanks for the reply.
    The lensbaby is nothing like a petzval. I have one of the new ones and I like it, but it's totally different. I actually like the plastic lens stopped down for a holga type effect if I'm shooting with the DSLR (sorry again).

    I could adapt the wee petzvals for the 35mm format easily. That's not the issue. The problem is the image circle is so big that I would lose the edge effects I'm looking for. What I need is a lens that has a really really small image circle.

    Steve

  6. #6

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    And than you will have to start looking for some micro-petzvals........
    Focal lenth: between 1 cm and 1 1/2 cm or so.....

    Peter



 

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