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Thread: Ground glass questions

  1. #1
    Dann Corbit
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    Ground glass questions

    It seems that the satin snow ground glass is no longer available.
    I saw a product in the new products for super bright ground glass, but I saw no resolutions in the thread it if was good or not.
    All the ground glass questions seem old.

    I am wondering what people recomend for the best ground glass for a 4x5 camera. Is there a trusted vendor who creates exceptional ground glass?
    I have 2 Calumets, with one more on order, but I don't think the brand matters, as far as I can tell.

    Second, I see that some ground glasses have clipped corners. I remember reading once that there is value in that, but I forget what it does for you to have the corners clipped. What is the advantage to clipping the corners of the ground glass?

    I also see that people use Fresnel lenses with their ground glass. Are there ground glass Fresnel lenses (which is to say, the ground glass itself is a fresnel lens)?

  2. #2
    Tin Can's Avatar
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    Re: Ground glass questions

    I vastly prefer my DIY GG, as they are so easy and cheap to make

    I prefer cut corners even on vented cameras

    Useful for peeping at aperture

    Also ventilates better in sealed cameras, pushing and pulling less dust inside

    IF I want Fresnel, I use the old people book readers on top of the outside of a GG temporarily

    but! some OE GG from the past are really good, like KMV which is a coating, not a scratch up

    I have 50's OE Linhof 4X5 I don't like, it is very coarse, yet still testing...
    where is the monolith

  3. #3
    lenicolas's Avatar
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    Re: Ground glass questions

    Quote Originally Posted by Dann Corbit View Post
    It I see that some ground glasses have clipped corners. I remember reading once that there is value in that, but I forget what it does for you to have the corners clipped. What is the advantage to clipping the corners of the ground glass?
    Once you have focused, dialed in your movements, and stopped the aperture down, you peep through the corners into the lens. If you can see the whole aperture circle (or pentagon or hexagon etc depending on the number of aperture blades) through the lens, means you are within the image circle. If part of the aperture is ę bitten Ľ by the edge of the lens, you should stop down the lens further to avoid heavy vignette.
    "I am a reflection photographing other reflections within a reflection. To photograph reality is to photograph nothing." Duane Michals

  4. #4
    Steven Ruttenberg's Avatar
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    Re: Ground glass questions

    What manufacturers for ground glass for 4x5. I need to replace mine on my Chamonix (getting scratched up from using and hoping I can find a brighter one. It has the separate fresnel sheet on it as well that is separate from the glass. Also fresnel sheets as well.

  5. #5

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    Re: Ground glass questions

    Quote Originally Posted by Steven Ruttenberg View Post
    What manufacturers for ground glass for 4x5. I need to replace mine on my Chamonix (getting scratched up from using and hoping I can find a brighter one. It has the separate fresnel sheet on it as well that is separate from the glass. Also fresnel sheets as well.
    Are you trying to say that you have a ground glass plus a separate fresnel plus one of the cheap fresnel sheets?

    That simply isnít the correct way to set up a camera if that is how you did it.

    And how did your screen get scratched?

  6. #6
    Tin Can's Avatar
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    Re: Ground glass questions

    Be aware that 4x5 GG Dims may vary slightly and some won't fit a tiny bit smaller space
    where is the monolith

  7. #7
    Steven Ruttenberg's Avatar
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    Re: Ground glass questions

    The frosted portion is glass, the Fresnel lens is plastic and the outer piece is plastic

  8. #8

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    Re: Ground glass questions

    If you really want "exceptional" gg, then the Maxwell product is hard to beat. But it is relatively expensive.

    I never minded clipped corners.

  9. #9

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    Re: Ground glass questions

    I haven't had any complaints about the brightness of the stock Chamonix sandwich (45N-1, with the clear circle in the middle of the fresnel). Have you talked to Hugo about a replacement?

    Although I don't know how you've beat up your GG. That takes work.

  10. #10
    Steven Ruttenberg's Avatar
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    Re: Ground glass questions

    The outer layer is just plastic. Sliding you eye loupe around scratches it fairly easily.

    I am currently polishing it with Nova system.

    I like the set up, no problem. Just seeing if it can be better.

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