Re: Connecting EOS 10D to Zeiss ICM 405

From: rene (renevanwezel_at_hotmail.com)
Date: 03/10/05

  • Next message: GTO: "Re: Connecting EOS 10D to Zeiss ICM 405" 
    Date: 10 Mar 2005 01:44:24 -0800

    Gregor, when homemaking adapters and you have enough room to play with
    the distance between (projection) eyepiece/relay lens and camera ccd,
    you have to take into account that sferical abberation is introduced if
    projection distance is different from the distance it is designed for.
    Normal eyepieces are not designed at all for projection but can still
    be used if the sferical abberation is corrected for. This on itself has
    nothing to do with compensation for chromatic abberation.

    Of course, in a professional world with dito pricing, why bother going
    through all the design troubles, just buy the thing you need from a
    proper microscope service company. For the amateur however...

    I think if you consider a dslr for photomicrography, it pays to start
    looking for the most suitable camera from the outset. The introduced
    shutter vibrations from dslr's is one of the disadvantages at the
    moment.

    Rene.

    GTO wrote:
    > The thread as discussed at the Microscope Yahoo group is mainly
    concerned
    > with microscope's that require a compensating relay lens (or
    eyepiece). Do
    > the epiplan objectives for this scope require a compensating relay
    lens?
    > Newer scopes (such as the Eclipse series of Nikon) do no longer
    require
    > compensating ocular/eyepieces and it is recommended to project the
    real
    > image directly onto a large CCD. Of course, if image sensors are too
    small,
    > a relay lens is required.
    >
    > DSLRs work great on microscopes when using an external shutter. Why
    do you
    > think it is a problem? - If an expensive dedicated camera is out of
    the
    > question, the use of a DSLR is preferred for applications that
    require great
    > a tonal range and/or require good S/N handling.
    >
    > Gregor

  • Next message: GTO: "Re: Connecting EOS 10D to Zeiss ICM 405"

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