Search found 2710 matches

by MichaelG.
Sun Apr 18, 2021 9:14 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

MichaelG. wrote:
Thu Apr 15, 2021 7:59 am
Their festival isn’t over yet, so I’m still waiting for a quote from Thailand
.

Meanwhile:
Although it doesn’t appear to be available in English, the Japanese Shodensha catalogue is worth a look
https://www.shodensha-inc.co.jp/digital ... ml#/page/1

MichaelG.
by MichaelG.
Sat Apr 17, 2021 7:30 am
Forum: Sandbox
Topic: Microscopic joints and gluing
Replies: 9
Views: 681

Re: Microscopic joints and gluing

My introduction to CA ‘SuperGlue’ was in the early 1970s when I worked at Kodak. It was very new then, and they used it in tiny quantities to bond the lenses into place, in the little plastic cameras. The dispensing equipment was the plumbed-in equivalent of Greg’s syringe, and the adhesive was very...
by MichaelG.
Thu Apr 15, 2021 7:59 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

Gee MichealG that manual made me feel really dumb! Very complicated-so is it a camera that you need to be into coding and audino or raspberry PI computers etc? Or also comes with software that is user friendly? (I know hardly anything about such things-too old) ... It’s O.K. Ross ... That ‘manual’ ...
by MichaelG.
Mon Apr 12, 2021 10:18 pm
Forum: Microscopy accessories
Topic: Oil immersion lens for reflected light!
Replies: 13
Views: 340

Re: Oil immersion lens for reflected light!

LouiseScot wrote:
Mon Apr 12, 2021 8:49 pm
ps I can't see how you could use reflected light with an immersion medium which assumes transmitted light - just not possible
Not quite impossible ... they are used for Coal studies:
https://www.uj.ac.za/faculties/science/ ... raphy.aspx

MichaelG.
by MichaelG.
Mon Apr 12, 2021 8:46 am
Forum: Pictures and Videos
Topic: Trying out my new objective
Replies: 26
Views: 316

Re: Trying out my new objective

It shows the same effect. It looks like it's to do with that species- maybe they are quite deep? . I’ve just found this: https://www.researchgate.net/publication/314545744_Morfologia_e_distribuicao_de_Caloneis_Lyrella_Moreneis_Petroneis_e_Pinnularia_em_praias_arenosas_de_Santa_Catarina_Sul_do_Brasi...
by MichaelG.
Sun Apr 11, 2021 6:26 pm
Forum: Pictures and Videos
Topic: Trying out my new objective
Replies: 26
Views: 316

Re: Trying out my new objective

LouiseScot wrote:
Sun Apr 11, 2021 5:52 pm
Petroneis_100xAchro_vsFluorCrop50pc_Red0017.jpg
.
Louise
Lovely image from that Fluorite
... but what's with the 'staircase' effect [very evident at upper left] ?

MichaelG.
by MichaelG.
Sun Apr 11, 2021 1:01 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: Zeiss KPL 2.5x Photo Eyepiece
Replies: 17
Views: 529

Re: Wanted: Zeiss KPL 2.5x Photo Eyepiece

MicroBob wrote:
Sun Apr 11, 2021 9:38 am
Zeiss West/Oberkochen normally had an adaptation using an 63mm achromat in the light path to the camera […]
@ScienceMatters ... You might find this thread worth a look:
https://www.microbehunter.com/microscop ... f=5&t=7871

MichaelG.
by MichaelG.
Sat Apr 10, 2021 9:02 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: Zeiss KPL 2.5x Photo Eyepiece
Replies: 17
Views: 529

Re: Wanted: Zeiss KPL 2.5x Photo Eyepiece

.

What an excellent page that is, Bob !!

Thanks for the link

MichaelG.
by MichaelG.
Sat Apr 10, 2021 7:58 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

I found the data-sheet for the sensor used in the DN3UVC-130
https://www.teledyne-e2v.com/content/up ... 76C560.pdf
... may be of interest [or not]

MichaelG.
by MichaelG.
Fri Apr 09, 2021 10:35 pm
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

. The brief tests I did with the Arducams were on a Raspberry Pi 4 ... I could never get them to work on either of my Macs. One USB 3 channel was always a little slower than the other, whether running MPEG4 or YUYV ... I didn’t investigate further, because I had decided to return them. The Japanese ...
by MichaelG.
Fri Apr 09, 2021 10:49 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

A pair of these cameras might be just what I need for 'real-time' stereo:
https://www.shodensha-inc.co.jp/en/dn3uvc-130/

Has anyone dealt with Shodensha ?

MichaelG.
by MichaelG.
Thu Apr 08, 2021 10:47 pm
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

Slightly off-topic ... but I did mention ViewMaster

Here’s a serious scientific application:
https://www.ebay.co.uk/itm/1987-2-Vol-S ... 3204513224

MichaelG.
by MichaelG.
Thu Apr 08, 2021 8:12 pm
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

.

I’ve just found the video to accompany the smartphone article:
https://static-content.springer.com/esm ... M3_ESM.mp4

[ not for the squeamish ]

MichaelG
by MichaelG.
Thu Apr 08, 2021 6:53 pm
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

That’s a very significant question, Bob

I sincerely hope that it is the former !

MichaelG.
by MichaelG.
Thu Apr 08, 2021 5:52 pm
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

As promised ... a few brief notes: I have been interested in stereoscopes for many years, and have a quite unreasonable fondness for the ViewMaster system ... which has all of the magic, but very little of the image quality, that we are seeking. https://www.viewmaster.co.uk/htm/quickref.asp The idea...
by MichaelG.
Thu Apr 08, 2021 7:40 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

MichealG here’s an interesting link I just found basically talking about the iPhone idea for making 3-D medical training videos from surgical stereo microscopes! Now I’m really going down a rabbit hole! https://www.nature.com/articles/eye2015282.pdf . Many thanks for that link, Ross ... This is the...
by MichaelG.
Wed Apr 07, 2021 4:18 pm
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

Scarodactyl wrote:
Wed Apr 07, 2021 3:46 pm
[…] That would probably be the most convenient method for video, though not the cheapest.
Thanks ... but even with that generous discount, way out of my price range for this.

MichaelG.
by MichaelG.
Wed Apr 07, 2021 7:50 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

. Great post, Rossf ... thanks My own interest is perhaps more ‘technical’ than your educational sessions, but we’re certainly on similar paths. ... reasonably high resolution and high frame-rate video is important for what I want; hence the interest in Holmes stereoscopes and their modern equivalen...
by MichaelG.
Tue Apr 06, 2021 10:33 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

The pair of camers will only show one image plane sharp at a time. For a good 3D- view one would need two stacked images from different angles. The typical focus drive of stereo microscopes and the inclined light pathes wil make it difficult to get a good result. I’m not sure what mgualt had in min...
by MichaelG.
Tue Apr 06, 2021 7:47 am
Forum: Illumination Techniques
Topic: What am i doing wrong?
Replies: 11
Views: 452

Re: What am i doing wrong?

I have absolutely no experience with Amscope products, but this looks a reasonable set-up tutorial:
https://youtu.be/coD33VcSL5A

MichaelG.
by MichaelG.
Mon Apr 05, 2021 1:37 pm
Forum: Camera systems and imaging
Topic: [HELP] - Hayear Cameras Setup & Software
Replies: 30
Views: 797

Re: [HELP] - Hayear Cameras Setup & Software

Gotcha. Reading the user manual I am now even more perplexed. Looking at the screenshots for the Windows/Mac software, it appears the Windows version has more tooling :cry: :evil: Unfortunately ... that is quite a common state of affairs ToupLite for example is the ‘poor relation’ of ToupView http:...
by MichaelG.
Mon Apr 05, 2021 9:48 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

Here’s one of my test shots:
.
for parallel viewing or Holmes stereoscope
for parallel viewing or Holmes stereoscope
6855096C-8D3A-4756-BC01-EF01CFC50D6E.jpeg (101.46 KiB) Viewed 1129 times
.

MichaelG.
by MichaelG.
Mon Apr 05, 2021 8:11 am
Forum: Beginner's corner
Topic: Using a pair of cameras with a stereo microscope
Replies: 32
Views: 1232

Re: Using a pair of cameras with a stereo microscope

Hello, I would like to try taking stereoscopic photos using a stereo microscope. My guess is the easiest way to do this would be to get a good stereo microscope and replace both eyepieces with cameras. I'm wondering if anyone has tried this, and also if there is a stereo microscope with really good...
by MichaelG.
Sun Apr 04, 2021 3:14 pm
Forum: Microscopes and optics
Topic: Remedy for eyepiece delamination
Replies: 6
Views: 322

Re: Remedy for eyepiece delamination

I have no idea what the Zeiss standard of accuracy was. Well the Germans are known for their engineering standards and attention to details so I imagine fairly tight tolerances. On which basis ... I still have no idea what the Zeiss standard of accuracy was :? O.K. we can imagine “not rubbish” ... ...
by MichaelG.
Sat Apr 03, 2021 9:21 am
Forum: Camera systems and imaging
Topic: Trying out a mono camera
Replies: 29
Views: 856

Re: Trying out a mono camera

Thanks

... That certainly gives you a ‘stretch target’

MichaelG.
by MichaelG.
Sat Apr 03, 2021 9:13 am
Forum: Camera systems and imaging
Topic: Trying out a mono camera
Replies: 29
Views: 856

Re: Trying out a mono camera

^^^
Broken link there, Louise
by MichaelG.
Sat Apr 03, 2021 9:00 am
Forum: Camera systems and imaging
Topic: Trying out a mono camera
Replies: 29
Views: 856

Re: Trying out a mono camera

You are already getting close to the best image here:
https://www.algaebase.org/search/specie ... s_id=34118

Keep up the great work

MichaelG.
by MichaelG.
Sat Apr 03, 2021 6:03 am
Forum: Illumination Techniques
Topic: PZO DIC collecting dust...
Replies: 7
Views: 2495

Re: PZO DIC collecting dust...

Thanks from me too, synnus

I have downloaded the document just for technical interest, and the introductory chapter looks very helpful.

MichaelG.
by MichaelG.
Sat Apr 03, 2021 5:50 am
Forum: Camera systems and imaging
Topic: Trying out a mono camera
Replies: 29
Views: 856

Re: Trying out a mono camera

That’s looking very good

MichaelG.
by MichaelG.
Fri Apr 02, 2021 9:39 pm
Forum: Microscopes and optics
Topic: Remedy for eyepiece delamination
Replies: 6
Views: 322

Re: Remedy for eyepiece delamination

The classic way is to use a lathe ... centre one element on a ‘wax chuck’, add warm balsam and the second element, and push it gently into place whilst it’s rotating. Sounds easy ... :roll: I have no idea what the Zeiss standard of accuracy was. MichaelG. . Edit: __ and here’s a more modern system; ...