Search found 3970 matches

by MichaelG.
Sun Mar 17, 2024 8:21 pm
Forum: Pictures and Videos
Topic: The Current Biofilm
Replies: 4
Views: 105

Re: The Current Biofilm

Well done, Don !

MichaelG.
by MichaelG.
Sun Mar 17, 2024 3:53 pm
Forum: Pictures and Videos
Topic: Internet Problem
Replies: 5
Views: 196

Re: Internet Problem

Hello, Don

I have just looked-back at some of your videos … they appear to be on YouTube
https://www.youtube.com/@DonSchaeffer-ew3dz

Sorry … I don’t use it myself, so can’t help regarding your log-in problem.

MichaelG.
by MichaelG.
Sun Mar 17, 2024 10:09 am
Forum: Microscopes and optics
Topic: Leitz Diavert, modernization (kind of)
Replies: 7
Views: 278

Re: Leitz Diavert, modernization (kind of)

Interesting to note that the designation for those two includes UV … but doesn’t mention either LWD or ULWD

… looks like a long and winding road ahead !

MichaelG.
by MichaelG.
Sun Mar 17, 2024 8:21 am
Forum: Microscopes and optics
Topic: Leitz Diavert, modernization (kind of)
Replies: 7
Views: 278

Re: Leitz Diavert, modernization (kind of)

I think there was a special Plan Apo series made for the Olympus IMT-2 and these had a longer working distance. However, you are right that this is crucial and needs to be verified. … Having just started my journey in the opposite direction [ bought an IMT-2 yesterday ], I will post links, later to...
by MichaelG.
Fri Mar 15, 2024 10:04 am
Forum: About the website, the magazine and this forum
Topic: Spam post and inappropriate use
Replies: 6
Views: 353

Re: Spam post and inappropriate use

Just to note that I attempted to report that post when I first saw it … but although the reporting icon opened a form … I don’t think it submitted my report.

I then [wrongly] assumed that the matter was already in-hand.
MichaelG.
by MichaelG.
Wed Mar 13, 2024 8:52 pm
Forum: Beginner's corner
Topic: What happened to the Leica DMLB?
Replies: 8
Views: 400

Re: What happened to the Leica DMLB?

[…] Thanks Michael—Unfortunately, this is the jumbled manual I was referring to in my post. It has some useful information, but it's all over the place in terms of sections referring to various configurations. And the resolution of the images are so low it's nearly impossible to tell, in many cases...
by MichaelG.
Fri Mar 08, 2024 8:43 pm
Forum: Introduce yourself
Topic: Hello from Manchester, England
Replies: 2
Views: 213

Re: Hello from Manchester, England

Welcome, Brad You may be interested to know that the Manchester Microscopical Society meets occasionally, in the Stopford Building at the University. Next meeting is the AGM on Thursday 14-March. http://www.manchestermicroscopical.org.uk/ Feel free to come along if it’s convenient for you. MichaelG.
by MichaelG.
Fri Mar 08, 2024 8:35 pm
Forum: Pictures and Videos
Topic: tulip stomata
Replies: 8
Views: 368

Re: tulip stomata

That all worked very well indeed !

MichaelG.
by MichaelG.
Tue Mar 05, 2024 7:28 am
Forum: Digital processing
Topic: Chromatic aberrations filtering
Replies: 47
Views: 1451

Re: Chromatic aberrations filtering

Apochronaut’s comments are wise , and well-expressed. To the best of my knowledge, software fixes can only work by discarding information and/or making guesses. The one relatively safe approach is when pure lateral CA is known to be present, and the channels can then be individually re-sized to over...
by MichaelG.
Mon Mar 04, 2024 10:59 am
Forum: Microscopy accessories
Topic: Mystery Nikon Magnifier
Replies: 8
Views: 1092

Re: Mystery Nikon Magnifier

Thanks for that ^^^

MichaelG.
by MichaelG.
Sat Mar 02, 2024 2:26 pm
Forum: Microscopes and optics
Topic: Selling old Leitz Laborlux or SM?
Replies: 20
Views: 707

Re: Selling old Leitz Laborlux or SM?

Just a quick clarification :

Perhaps contrary to the instinctive reading … Nur für means Only for

MichaelG.
by MichaelG.
Sat Mar 02, 2024 9:38 am
Forum: Microscopes and optics
Topic: Selling old Leitz Laborlux or SM?
Replies: 20
Views: 707

Re: Selling old Leitz Laborlux

MichaelG. wrote:
Fri Mar 01, 2024 8:47 am
… it all depends [in great detail] what you have, and in what condition.
I think the subsequent discussion is demonstrating that point

… Glad to see you found a way to re-size the images.

MichaelG.
by MichaelG.
Fri Mar 01, 2024 8:47 am
Forum: Microscopes and optics
Topic: Selling old Leitz Laborlux or SM?
Replies: 20
Views: 707

Re: Selling old Leitz Laborlux

Anyone else have an idea on what would be a good price for this microscope? Sorry, but this is a real How long is a piece of string ? question Look at some Leitz prices and you will soon realise that one objective could be worth more than another complete Laborlux. … it all depends [in great detail...
by MichaelG.
Tue Feb 27, 2024 8:50 am
Forum: My microscope
Topic: Does Anybody Recognize this Inverted 'Scope?
Replies: 33
Views: 3055

Re: Does Anybody Recognize this Inverted 'Scope?

Forgive me if this is a ‘Red Herring’ but those sliders look remarkably similar to the ones for the Olympus IMT https://microscopecentral.com/products/olympus-microscope-40x-phase-annuli-for-40x-objective-imt-rs40 https://www.alanwood.net/downloads/olympus-imt-manual.pdf I believe these were offered...
by MichaelG.
Tue Feb 20, 2024 7:39 am
Forum: Microscopy accessories
Topic: Wild Heerbrugg M5 power supply
Replies: 14
Views: 793

Re: Wild Heerbrugg M5 power supply

Try this as a search for suitable replacement switches:

https://uk.rs-online.com/web/c/?searchT ... ton+switch

The left side-bar on that page will let you refine the search

MichaelG.
by MichaelG.
Fri Feb 16, 2024 8:16 pm
Forum: Pictures and Videos
Topic: Ballpoint pen tip
Replies: 9
Views: 1437

Re: Ballpoint pen tip

Very impressive, Franck
… You obviously have that bench well-sorted

MichaelG.
by MichaelG.
Thu Feb 08, 2024 3:36 pm
Forum: Camera systems and imaging
Topic: OM1 Objective adapter
Replies: 21
Views: 6167

Re: OM1 Objective adapter

Many thanks for the clarification, elaniobro

… All’s good
.
… I blame Oympus, of course, for re-using a name !
MichaelG.
by MichaelG.
Wed Feb 07, 2024 1:19 pm
Forum: Camera systems and imaging
Topic: OM1 Objective adapter
Replies: 21
Views: 6167

Re: OM1 Objective adapter

This would also be for my OM-1 camera system which is a Micro 4/3 lens. Please excuse me for coming late to this discussion … I have read trough the previous posts, and this statement leaves me confused. If, as you confirmed yesterday, your OM-1 has a mirror … then it would surely be the original 3...
by MichaelG.
Tue Feb 06, 2024 6:48 am
Forum: Beginner's corner
Topic: Several choices of microscopes; what's your opinion?
Replies: 17
Views: 1412

Re: Several choices of microscopes; what's your opinion?

As a disinterested observer [which is not the same as being uninterested] … I would welcome the open discussion that charlie g has invited. The forum exists as a learning and information-sharing platform for all of us … so let’s all see [and perhaps contribute to] the technical aspects, please. Mich...
by MichaelG.
Tue Feb 06, 2024 3:27 am
Forum: Pictures and Videos
Topic: Collection of live round Diatoms
Replies: 2
Views: 295

Re: Collection of live round Diatoms

Nicely done
… and an important reminder that the pretty structures we usually admire are only their skeletal remains.

MichaelG.
by MichaelG.
Mon Feb 05, 2024 9:02 pm
Forum: Microscopes and optics
Topic: Determining the back focal plane of an objective
Replies: 5
Views: 522

Re: Determining the back focal plane of an objective

It doesn’t answer the question explicitly, but your will find 17 occurrences of the term here:
https://www.iso.org/obp/ui#iso:std:iso: ... :sec:3.1.9
and collectively they explain.

I am posting that link because it’s very rare to get a freebie from a Standards Organisation !

MichaelG.
by MichaelG.
Fri Feb 02, 2024 7:48 pm
Forum: Illumination Techniques
Topic: Has anyone ever used LWD condenser?
Replies: 8
Views: 888

Re: Has anyone ever used LWD condenser?

I think tis probably gives the game away: https://www.fishersci.fi/shop/products/condenser-achromatic-lwd-ba410/15425302 The long working distance facilitates its use with phase contrast accessories MichaelG. . See also: https://moticeurope.com/en/lwd-achromatic-condenser-na-065-wd108mm-with-iris-di...
by MichaelG.
Thu Feb 01, 2024 8:29 am
Forum: Microscopes and optics
Topic: Lomo objective designations
Replies: 33
Views: 6713

Re: Lomo objective designations

It is quite good and covers full frame sensors if I remember correctly, assuming one shoots focus stacks, because it is not plan. It was actually my exact LOMO 3.7x that RobertOToole tested and praised, after which the price went up dramatically. Congratulations !! I was looking back at his reviews...
by MichaelG.
Wed Jan 31, 2024 10:07 pm
Forum: Microscopes and optics
Topic: Lomo objective designations
Replies: 33
Views: 6713

Re: Lomo objective designations

The mystery deepens
… this ebay item has a “plano-convex” egraved on it
https://www.ebay.com/itm/395033242941

I admit, I am lost !

MichaelG.
by MichaelG.
Wed Jan 31, 2024 9:48 pm
Forum: Microscopes and optics
Topic: Lomo objective designations
Replies: 33
Views: 6713

Re: Lomo objective designations

Hello. Thank you for this thread. Can someone suggest the meaning of the following symbol on a LOMO water immersion objective? IMG_5630.jpeg Thanks. At a very wild guess, I would say it’s a simple biconvex lens element ! … but I hope that’s not valid What other markings are there on the objective b...
by MichaelG.
Tue Jan 30, 2024 8:53 am
Forum: Pictures and Videos
Topic: Some arcellinid amoebae in SEM
Replies: 21
Views: 1516

Re: Some arcellinid amoebae in SEM

I keep returning to < Difflugia brevicolla.jpg >

All of the images are wonderful in various ways …
but that one somehow encapsulates how little we comprehend.

It astonishes me every time I look at it.

MichaelG.
by MichaelG.
Tue Jan 30, 2024 6:03 am
Forum: Beginner's corner
Topic: Several choices of microscopes; what's your opinion?
Replies: 17
Views: 1412

Re: Several choices of microscopes; what's your opinion?

Hi, jackieone, are you located con-US? I have excellent 160mm/finite SteindorfBerlin with trinocular head, with illumination setup. very low cost+ shipping. Other scope setups too , Olympus/Tokyo CKa inverted microscope with illumination setup...$120+shipping, other scopes too. I also can supply mi...
by MichaelG.
Tue Jan 30, 2024 5:43 am
Forum: For forum members who want to buy and sell equipment
Topic: eBay Catch-22 Login Problem
Replies: 4
Views: 486

Re: eBay Catch-22 Login Problem

I am stunned that MichaelG required snail-mail postal from 'UK-eBay'. charlie g Not actually from ebay, charlie g The snail-mail arrangement was imposed by Tesco Bank [the supplier of my MasterCard] They posted a special letter, with a tear-off security layer embedded … this revealed the six-digit ...