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Fieldscope for photography

  • 26-03-2003 5:16pm
    #1
    Kell
    Closed Accounts Posts: 2,479 ✭✭✭


    Hi all. Has anyone any experience using a fieldscope as a high power telephoto? I have a very good fieldscope and want to buy a photographic adapter for it, I am just concerned as to the image quality. Anyone use this type of set up and what are the results like?

    K-


Comments

  • #2
    Samson
    Users Awaiting Email Confirmation Posts: 3,129 ✭✭✭Samson


    When you say field scope, I am going to assume you are talking about what I would refer to as a spotting scope. If I'm incorrect, the basics of what I say should be the same.

    I have never seen a spotting scope used in conjunction with a camera as a lens, but I'm sure it's possible.
    However, what you would require would be the ability for the spotting scope to take a "T mount".
    A "T mount" is a sort of universal screw mount which is compatible with a range of optical devices (eg. mirror lenses, telescopes, slide copiers).
    You have two ends on a "T mount", the universal (screw) end and the other end which will be specific to your camera (Canon, Nikon etc.).
    I have seen telescopes (which are basically big mirror lenses) attached to cameras for celestial photography.

    One drawback with "T mount" optical devices is that you cannot change aperture, they are fixed aperture only. Most mirror lenses and telescopes are either F8 or F11, so you are somewhat restricted in exposure options (you can only adjust shutter speed). Spotting scopes (in my experience) are all fixed aperture.

    If you are asking the question because you are considering the purchase of a cheap spotting scope for use specifically as a telephoto, don't bother, buy a 600mm F8 Sigma mirror lens.

    What type of camera have you got?


  • #3
    Kell
    Closed Accounts Posts: 2,479 ✭✭✭Kell


    Cheers samson-

    Camera: Nikon F90 (nuff said)

    Scope: Opticron HR80 GA (€1000)

    It's an excellent scope. Wasent aware of the aperature setting being limited. The scope can take the T mount alright, but what I was really getting at was whether anyone here has actually used one and what the results on paper are like.

    While I am at it, anyone know where I can get the camera professionally cleaned? I have a sneaking suspicion it's harbouring grit or something that is scratching the **** out of my negs.

    K-


  • #4
    Samson
    Users Awaiting Email Confirmation Posts: 3,129 ✭✭✭Samson


    Speak to Alan at Photographic Repair Services, Portobello.
    Tel. 01 4782122 or 4781638


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