MicrobeHunter.com Microscopy Forum

I bought a Vision Scientific . . . Eleven posts in the past 24 hours or so -- all flogging this stencil brand and providing pretty much inaccurate comments about the competition. One might try buying something like the identical-appearing and priced "Parco Scientific" stereo microscopes - but they ...

The simple procedure I followed made a lot more difference to parfocal zooming than I would have thought possible. It may be the scope you tried was a lemon. I remember the scene you mention from Oliver's video, and is possible he did not know how to adjust for parfocal zoom as his expertise seems ...

I bought a Vision Scientific zoom stereoscope for home use from amazon. I have had it for two weeks by now. It is parfocal over the zoom range and I'm quite satisfied. I don't know if there is any product with a lower price than them on amazon. They have only one zoom stereo head and thousands of co...

Just for the sake of the completeness of this thread, the parfocal ZM line stereo zoom head is ZMDG6745T, which is sold separately. All other heads in the ZM line AmScope stereoscopes are not parfocal, as of last week. This is definitely incorrect, though it would not be surprising at all for an am...

Yes, my link was exactly what you are looking for. Read it again. Sorry for my misunderstanding. Yes, your link is correct. And I remember this procedure. I guess I had to test the scope with this method. But I very much doubt that it would correct over 15cm focusing knob rotation. That is just too...

Viktor's point was that getting a stereo zoom microscope parfocal involves focusing at high magnification and then (without changing the focus) zooming to low magnification. At that point you use the diopter adjustments to get things in focus. Might have to tweak it, but that's the basic approach. ...

Yes, my link was exactly what you are looking for. Read it again. Sorry for my misunderstanding. Yes, your link is correct. And I remember this procedure. I guess I had to test the scope with this method. But I very much doubt that it would correct over 15cm focusing knob rotation. That is just too...

The Amscope stereo zoom I had was parfocal--if you followed the correct procedure to adjust parfocality. I didn’t know that it was possible to adjust the behavior of the zoom lens complex of the AmScope stereoscope. Can you share the method? I couldn’t find it on the internet. Also I appreciate it ...

Looks like the same models ordered from the same suppliers. It may very likely be true. But when I communicated with the customer service representative of AmScope, he said that parfocal stereo heads should have such description in the product info page. And he pointed me to the only ZM line zoom s...

The Amscope stereo zoom I had was parfocal--if you followed the correct procedure to adjust parfocality. I didn’t know that it was possible to adjust the behavior of the zoom lens complex of the AmScope stereoscope. Can you share the method? I couldn’t find it on the internet. Also I appreciate it ...

Sorry it looked like a spam or ad. Yes it was my first post. But I bought the scope because I became very interested in doing something at home with my daughters. I just found Oliver’s site and loved it. I subscribed yesterday for his newsletter. :) To be more clear, I tested the ZM line of amscope....

Hi, Just FYI, I recently had a chance to compare an AmScope stereoscope and a Vision Scientific stereoscope. AmScope products do not seem to be parfocal in general. There is one stereoscope head in the ZM line that is parfocal (sold alone without stands etc), but other than that, it was not easy to ...