Re: General comment

On Sat, 19 Nov 2005 23:33:08 -0600, "Nick" <nickmirro@xxxxxxxxxxxxxx>
wrote:

>Well this is eye opening. $15k? Well actually thats depressing. Maybe I
>should clarify that I could do without the imaging ability initially. It
>just needs to be an upgrade possibility. I am now also will to fork over up
>to $2500 and take something used. Here are some inexpensive zooms that I
>found tonight but I am unsure as to quality and usefulness. Any comments?
>

here is a reasonable stereo zoom on ebay. It has base, objective,
eyepieces and Fostec halogen illuminator.

http://cgi.ebay.com/OLYMPUS-STEREO-MICROSCOPE-SZ-4045-LIKE-NEW_W0QQitemZ7564367651QQcategoryZ26411QQrdZ1QQcmdZViewItem

Fostec is very good. I use their DCE units with the same ring light
and bifurcated bundle shown in the pix. The C-mount camera port would
allow use of prosumer digicams or dedicated microscope digicam.

I had an SZ-4045 as my first stereo and liked it. However, after
using it for awhile, the limits of stereo became clear. Illumination
is a constant problem. DOF and WD are opposite trade offs, and
regular camera systems did not work with stereo well at all--one needs
spot metering.

The other problem is that the resolution of the system was not what I
needed. I recall it being something like 200-300 lpi. So I moved to
SZH-10 and PlanAPO objectives. That moved it up to about 500 lpi. My
current SZH-10 is 800 lpi. The SZH-10 and SZX add an adjustable iris
to increase DOF (at the expense of illumination). A 30 second
exposure is not unusual. It's also important that the light source(s)
be color corrected for daylight. The Fostec units allow this very
easily.

If you have a macro system for your Canon, what do you want to do with
the stereo zoom?

Gary Gaugler, Ph.D.
Microtechnics, Inc.
Granite Bay, CA 95746
916.791.8191
gary@microtechnics dot com
.

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