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Thread: Largest, fastest wide angle lens for ULF?

  1. #21
    Mark Sawyer's Avatar
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    Re: Largest, fastest wide angle lens for ULF?

    Quote Originally Posted by Jac@stafford.net View Post
    That cross-section shows two elements, both thinner in the middle than the edges, so both are negative/dispersive lenses. Sorry, just ain't gonna work.
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  2. #22
    Jac@stafford.net's Avatar
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    Re: Largest, fastest wide angle lens for ULF?

    Quote Originally Posted by Mark Sawyer View Post
    That cross-section shows two elements, both thinner in the middle than the edges, so both are negative/dispersive lenses. Sorry, just ain't gonna work.
    Thanks for that, Mark. I'm glad I asked. What if I remove the rear element?

    As-is it will at least be one impressive door peephole.

  3. #23

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    Re: Largest, fastest wide angle lens for ULF?

    Time to find a couple of positive lenses of similar diameter, and commit some optical mayhem!

  4. #24
    Jac@stafford.net's Avatar
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    Re: Largest, fastest wide angle lens for ULF?

    Quote Originally Posted by Mark Sampson View Post
    Time to find a couple of positive lenses of similar diameter, and commit some optical mayhem!
    That is a challenge! By chance I do have two opposing 15" condenser lenses, but no other big glass. Me thinks these lenses, or whatever they are, are candidates to my remote storage locker.

    Very good being in touch, Mark.

    (OMG, I just remembered that I have traffic light lens that throw a beam far away. I'm considering incorporating them into the tail lights of my home-built car. ) It is the one on the right here.

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