Re: Zeiss Photomicroscope III correction?

On Apr 3, 11:12 pm, Richard J Kinch <ki...@xxxxxxxxxxx> wrote:
Thanks for the input, Kevin.

My real problem is that I have to analyze this optical problem without a
specimen instrument in hand. That's why I have to ask advice here, as
the customer with the microscope is not conversant in the optical
principles.

Kevin Cunningham writes:
Now the real question, what do you want to put were?

We propose to put a flat digital image sensor (such as a Canon digital
SLR) above the top port via a custom-made tube. This would in principle
be no different than the phototube and basic body Zeiss made for 35mm
film cameras, but possibly relaying differently to project a smaller
image for the smaller sensor. The question is how the light emerges
from the top port of the Photomicroscope III (that is, to a focal plane
versus infinity), and whether this needs further correction such as
specifically by a Kpl eyepiece.

Or maybe the need for correction depends on the objectives installed?
Looking at the Zeiss manual g-41-170photomicroscope3transmittedlight.pdf
from their Web site, some of the objectives in the list say they are
"corr (flatfield objective)".

Looking at the light path diagram in that manual, I see what you mean
about the 160mm objectives being followed by a tube lens which
collimates the light (makes it infinity). The diagram shows the crazy
path to the eyepieces, but not to the upper port. It is the case that
the upper port light is collimated?

Part of the confusion is that "correction" means several different
things here, such as flatfield correction versus objective/eyepiece
pairwise correction.

There are two or four positions in the head, the two position head was
designed to be cheaper and easier to use than the four position head.
However that really doesn't affect you since it both work the same.
The first position is only to the eyes and the last positions will
direct the light to both the camera and binoc or just to the camera.
I'd use the Zeiss trinoc tube and a photo eyepiece, that will correct
most distortions. Zeiss tended to go towards things like barrel
distortion if they couldn't correct all of the problem.

You should be able to make a simple adapter to get the Cannon on the
trinoc, no bit problem. Remember, if it will work on a Standard it
will work on a Universal, Photomic or a Ultaphot. If you just need to
look at a unit a Standard is easy and simple to find.

Thanks,

Kevin Cunningham
SMS
.

Relevant Pages

  • Re: Zeiss Photomicroscope III correction?
    ... My real problem is that I have to analyze this optical problem without a ... Or maybe the need for correction depends on the objectives installed? ... but not to the upper port. ...
    (sci.techniques.microscopy)
  • Re: Olympus Objectives on a Zeiss Microscope
    ... I have a Zeiss Axiovert 25 and like to use ... correction for a 2mm glass. ... So is there anyone who has experiences with the exchange of objectives? ... Zeiss and Olympus correct somethings in the ...
    (sci.techniques.microscopy)
  • Re: Here is why; and confusing conclusions about tubelength
    ... What modern makes and models use eyepiece correction like the old Zeiss ... objectives only. ...
    (sci.techniques.microscopy)
  • Re: Checking input for letters
    ... was having reading data in a Java program from a MySQL database. ... current objectives, plus the things that happen to interest me, and ... understand all the posts before I made the correction. ...
    (comp.lang.java.help)
  • Re: Problem with digital imaging on scope
    ... Is this Leitz eyepiece correction explained somewhere online? ... "Leitz Plano Objectives 'Plan' New series of ... Periplan GF or GW eyepieces for getting a flat field, ...
    (sci.techniques.microscopy)