Search found 96 matches

by jfiresto
Thu Jan 16, 2020 8:38 am
Forum: Camera systems and imaging
Topic: DSLR or Integrated?
Replies: 10
Views: 208

Re: DSLR or Integrated?

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...
by jfiresto
Wed Jan 15, 2020 10:26 am
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

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...
by jfiresto
Tue Jan 14, 2020 8:44 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

... 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...
by jfiresto
Tue Jan 14, 2020 5:37 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

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...
by jfiresto
Mon Jan 13, 2020 10:47 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

... 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...
by jfiresto
Mon Jan 13, 2020 9:55 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

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...
by jfiresto
Mon Jan 13, 2020 9:32 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

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...
by jfiresto
Mon Jan 13, 2020 8:58 pm
Forum: Camera systems and imaging
Topic: DSLR or Integrated?
Replies: 10
Views: 208

Re: DSLR or Integrated?

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 ...
by jfiresto
Mon Jan 13, 2020 12:09 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 261

Re: Advice on upgrading a stereo microscope

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...
by jfiresto
Sun Jan 12, 2020 5:54 pm
Forum: Camera systems and imaging
Topic: Best option for attaching DSLR to Leica DMR trinocular port (HC)?
Replies: 6
Views: 147

Re: Best option for attaching DSLR to Leica DMR trinocular port (HC)?

... 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-...
by jfiresto
Sat Dec 21, 2019 12:16 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

... 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...
by jfiresto
Fri Dec 20, 2019 8:38 am
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

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...
by jfiresto
Thu Dec 19, 2019 6:20 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

... 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...
by jfiresto
Fri Nov 22, 2019 11:31 am
Forum: Camera systems and imaging
Topic: How to attach camera to Olympus BH2?
Replies: 19
Views: 3807

Re: How to attach camera to Olympus BH2?

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...
by jfiresto
Wed Nov 20, 2019 3:47 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

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...
by jfiresto
Sun Nov 17, 2019 8:53 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

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.
by jfiresto
Sun Nov 17, 2019 8:29 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

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.
by jfiresto
Sun Nov 17, 2019 5:36 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

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...
by jfiresto
Sun Nov 17, 2019 4:34 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

...
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by jfiresto
Sun Nov 17, 2019 4:33 pm
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 24
Views: 1903

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

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....
by jfiresto
Wed Nov 13, 2019 8:24 am
Forum: Camera systems and imaging
Topic: HA2307 HDMI industrial camera
Replies: 43
Views: 6185

Re: HA2307 HDMI industrial camera

,,, 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...
by jfiresto
Tue Nov 12, 2019 9:20 am
Forum: Camera systems and imaging
Topic: Camera to fit a Zeiss TV Tube
Replies: 5
Views: 541

Re: Camera to fit a Zeiss TV Tube

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 ...
by jfiresto
Sat Oct 12, 2019 3:09 pm
Forum: Beginner's corner
Topic: Stereo Vs Biological Microscope Eyepieces
Replies: 12
Views: 1330

Re: Stereo Vs Biological Microscope Eyepieces

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...
by jfiresto
Thu Oct 10, 2019 10:15 am
Forum: Beginner's corner
Topic: Newbie with information overload looking for first microscope
Replies: 22
Views: 2389

Re: Newbie with information overload looking for first microscope

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...
by jfiresto
Thu Oct 03, 2019 12:03 pm
Forum: For forum members who want to buy and sell equipment
Topic: Nikon E400 for sale
Replies: 3
Views: 1197

Re: Nikon E400 for sale

That looks like a very fine microscope. Has it been to Antarctica? I think you should advertise that if it has. :)
by jfiresto
Tue Sep 24, 2019 5:05 pm
Forum: Introduce yourself
Topic: Retired now, and looking to obtain first scope for hobby use
Replies: 8
Views: 1106

Re: Retired now, and looking to obtain first scope for hobby use

A stereo microscope on a boom stand is ideal for electronics inspection. 3-20X magnification is a good range: 3X for quickly scanning a large area and 20X for investigating things that look suspicious, for example, funny looking (is that a crack?) solder joints. Typically people add on an 0.5X auxil...
by jfiresto
Mon Sep 23, 2019 4:10 pm
Forum: For forum members who want to buy and sell equipment
Topic: WOW. and only $71,409.00
Replies: 3
Views: 1021

Re: WOW. and only $71,409.00

Yes, I now expect further signs before I entertain the idea that it is more than a typo.

Watching my hyperactive seller maximizing his profit got pretty amusing. I had hopes he could spin his listing into a fourth week, to see what else he would try.
by jfiresto
Mon Sep 23, 2019 3:20 pm
Forum: Illumination Techniques
Topic: Microscope fan cooled illuminator
Replies: 8
Views: 1593

Re: Microscope fan cooled illuminator

As in a Peltier cooler?

I might try a larger, very low noise and slow turning fan. You don't need a great deal of air flow to markedly increase a heat sink's efficiency.
by jfiresto
Mon Sep 23, 2019 2:54 pm
Forum: For forum members who want to buy and sell equipment
Topic: WOW. and only $71,409.00
Replies: 3
Views: 1021

Re: WOW. and only $71,409.00

They seem to be impatient sellers and have already dropped the price to $295 + shipping. I tried to buy a microscope last year, but gave up as the seller kept changing their mind. They kept changing the buy it now price, the starting price and if it should be on auction (the seller let none of three...
by jfiresto
Sun Sep 22, 2019 7:10 am
Forum: Digital processing
Topic: Motic Image Plus for Mac
Replies: 10
Views: 2109

Re: Motic Image Plus for Mac

I am sure your help was appreciated! Besides, the misdirection was probably partly my fault. I may have been getting too familiar with Michael's problem and should have answered with a touch of proper aloofness.