MicrobeHunter.com Microscopy Forum

... Well wishing you a happy birthday over the weekend John. Thank you. They were predicting cold, cloudy, wet and windy weather, but the day proved to be just the opposite. I would definitely be keen to know your measurements when you have the opportunity and keen to read your experiences. Will do...

Hi John, the outer diameter of the tube that inserts into the camera port is 37.9mm, as confirmed by a caliper. It was printed as 38mm but this was pretty tight so I shaved it down a little. Very good. I am not surprised about having to shave down the 3D-printed part. They come out a little over, e...

... On the forum and online I've seen some monster towers over some microscopes and feel like I'm probably missing something. Is my setup giving me the best results or do you really need correcting optics or a greater distance between the sensor and the port to achieve the best possible image?... I...

So these things are insanely small and it might not have been obvious from the first picture.... Indeed, I estimate the lithographed area is roughly 1 mm to a side. That probably makes them better targets for compound microscopes. A die would only reach roughly half the field diameter of my stereo ...

If you would like to distribute a few as a standard target and compare microscopes, I would be happy to put one under a Wild M3 and an M7S, take some pictures and add them to a thread.

That it's possible to get a machine that looks and sort-of works like a microscope at all for $300 these days is the bigger mystery. I would say for a start, you can save lots of money by building microscopes that reuse and simplify old designs, with looser tolerances and much less durability, usin...

I would also consider mirrorless, interchangeable lens system cameras, as you probably will not be looking through the viewfinder. (I would have to use a step ladder and it would be kind of awkward.) Mirrorless cameras introduced a few innovations useful to microscopy that were missing from contempo...

They claim to be manufacturers !! but I am not totally convinced.... I spent a few years in light manufacturing on the engineering side (largely production equipment and a bit of planning). I viewed their "About us" videos showing their facilities. They are almost certainly reselling goods made off...

... I would be perfectly happy with this one.... https://www.bresser.de/en/Microscopes-Magnifiers/Microscopes/BRESSER-Science-ETD-101-7-45x-Zoom-Stereo-Microscope.html except....its 500!!! euros... That one looks much more feasible. It has a standard working distance of 90mm and will need an 0.5X a...

I briefly entertained the idea of asking the OP to measure the geometry of his microscope, from which we could estimate an upper bound on its numerical aperture, but I decided, no, it would be better to talk with Bresser and let them encourage or discourage the idea of 25X oculars. It would test Bre...

... I think you're putting more thought into it than they did. To be fair the lack of a zoom mechanism does remove some optical challenges and you can sometimes get a surprisingly nice image even off of older or low-end fixed mag stereos, but it's not like a lot of consideration needs to go into pu...

Because the OP's microscope has a very similar looking twin, rated for 50X, a twin that accepts both 10X and 25X eyepieces, I suspect the two share the same objectives, and that his microscope's objectives have the resolution. Optical engineering, however, is a matter of approximation and optimizati...

Yes and no. With a 25X eyepiece, you will see a smaller area of the specimen (typically only the inner 40% of what you see with 10X). On the other hand, if the microscope's objectives provide enough resolution (which I expect), a 25X eyepiece will magnify the inner 40%, 2.5X and with that much great...

Here's a manufacturer's table of DSLR & Mirrorless cameras suitable for microscopy... https://www.lmscope.com/en/Camera_Ranking_en.html The 'lmscope' ratings suggest many good things to look for, but are not entirely consistent. Take the first two cameras I looked up. They rank the E-PL7 at number ...

Have you talked to or written Bresser? They sell a similar looking microscope to yours that they supply with 10X and 25X oculars, to magnify twenty or fity times. Perhaps the 25X oculars are compatible with your microscope and they will sell you a pair, separately. The 25X oculars will magnify the c...

... I am not sure why David Walker referred to it as an empty tube in his article[/url], but I have found pictures that clearly show a lens at the bottom.... I understood "empty" as meaning that you had to fill the hole with a least a 37mm-port-to-something adapter, for example, a simple 37mm to c-...

... They also put the magnification marker on the ring, so it's definitely meant to be permanently installed in the same orientation.. Well, that does put a damper on that hope. One other thing I like less about it than the M3 clone is that the bottom objective is not a 50mm thread, but a larger as...

The M7 clone came in. Visually it is a very close copy--the only really major difference is that the focus mount is permanently attached rather than being on a standard 76mm removable ring.... What is the diameter of the ring? In your second photograph, are those a couple, radial set screws / set s...

... I have one of those M7 clones (just a single head) coming in soon because I'm an idiot who can't say no to a good deal on something I'm curious about.... You never know: it may come in handy. If it copies the Wild M7/M7A, it will have the amusing trick of being rather axial and letting you rota...

Does your trinocular BH2 provide an intermediate ISO 38 mm photo port? I have seen references to a 38 mm clamp or dovetail, and was wondering if it is was one and the same. If it is, I know a couple ISO to c-mount adapters that will (just) fully spin into most c-mount to micro four thirds thread ada...

The pictures I posted earlier are somewhat pathological, in that they try to excite the optical shortcomings of the microscope rather than demonstrate its strengths. The Wild M3 was sold as a "routine" microscope, designed to efficiently support daily production and inspection, in the field or on th...

Could that be Motic's previous model that Parco has copied, and a copier being copied?

I ask because Motic continues to sell the spitting image of Parco's photo adapter, for the K700 – and ask their customers to mix visual styles: Swiss rounded and Chinese rounded rectangular.

I believe the Motic K700 is a derivative. You can get both single and dual observer versions from Ted Pella. Their prices appear reasonable. They list the Motic 1500.3 photo bridge for $190. I have seen it as high as $300.

I am glad they were helpful. I wanted to include some shots of a green mineral, but have misplaced it. It is funny. All this time, I saw but never really felt the original Wild M3's, enthusiastic dome distortion – until a few minutes ago, when I looked at the text, again, in stereo, through the eyep...

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For comparison, here are some images from a ca. 1980 Wild M3, using an even older Wild 376788 photo tube, projecting directly onto the sensor of a 12 megapixel, Micro Four Thirds Olympus E-PL3 camera, with no additional optics. The text is from a 1200 dpi laser printer with ca. 5 µm toner particles....

,,, why is it that when you see photos of microscope & capture set ups of microscopists who clearly know what they're doing..., they are always using DSLRs?... What puzzles me a little is that they are still using cameras with mirrors. After all that effort to provide optical viewfinders, I have my...

So far, I have been quite pleased with the nearly unused Olympus E-PL7 I picked up, to mount on a Wild Heerbrugg, one-inch-sensor, C-mount port, with no intermediate optics. I think the aspect ratio and cropping of its µ4/3 sensor is a better match than I would get with the wider APS-C sensors. The ...

I would want to know at what depth a third party, reticule eyepiece expects the intermediate image, and if that matches the microscope. If the image is deeper into the eyepiece tube than the eyepiece expects (a curse for Wild zombies), you can have a focused reticule or a parfocal microscope, but no...

I decided to purchase a used Nikon Labophot with a phase contrast condenser and objectives from PeteM.... My kids can't wait to get started using it. I bet your kids will have a lot of fun. My parents, both scientists, gave me a brass, compound, student microscope when I was 7 or 8. I think my wors...