The actual diameter of a transmission microscope ocular tube is one inch (25.4 mm). The microscope adaptors are made to fit tubes from about 25,0 to 26,0 mm in diameter. They utilise a collet that closes down on the tube. Tubes vary slightly, but the big names - Zeiss, Leitz, Wild (Wild belongs to Leitz now) are usually the same - 25,4 mm. The ocular tubes of stereo microscopes are 33 mm in diameter so the K adaptor would be useless. Very good pictures indeed can be taken with stereo microscopes. It is quite practical to attach a camera directly to one of them with a phototube; but not to a transmission instrument - if you want decent pictures.
If we are to go on with this, its going to be a rather long and way off topic. The camera itself plays a rather minor role in this work. I've found a picture of my very first photomicrographic equipment in the Encyclopaedia of Southern Africa where there is an article I wrote on protozoa in 1970. The equipment is more or less like that I expect you envisage using. But perhaps this should be continued off-list? Unless there are more people interested. I don't know how we can show the picture unless I email it to those who want it, or post it. But in any case it still has to be scanned. Don Dr E D F Williams http://personal.inet.fi/cool/don.williams Author's Web Site and Photo Gallery Updated: March 30, 2002 ----- Original Message ----- From: "mike wilson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, December 18, 2002 2:35 PM Subject: Re: Advice for a microscope for photog. purpose? > Hi, > > Don wrote: > > "The K wouldn't fit anyway, it is made for 26 mm tubes." > > 25mm > > "I suppose there are some optics involved." > > None in mine. It is just an adaptor with a K mount at one end > and a clamp tube at the other. > > From the manual: > "As a binocular microscope has two lens tubes, slanted towards > the object, no camera,.... can take photographs ... because the > resulting images will be blurred." > > Used by itself, the Adaptor K will give images approximately one > third of the microscope enlargement on film. It can be used > with extensions or bellows to give images up to the full > enlargement size on film but this necessitates using some form > of camera bracing to ensure stability. Enlargements over x600 > are not recommended for the adaptor. > > To return to the header topic; another source of microscopes > might be a local educational establishment. It is possible it > might loan you a suitable 'scope in return for some > slides/prints. > > mike >
