Search found 2760 matches

by Scarodactyl
Thu Mar 14, 2024 10:39 pm
Forum: Microscopes and optics
Topic: Reichert U.S.A. and Leica. Why the undercorrection?
Replies: 10
Views: 546

Re: Reichert U.S.A. and Leica. Why the undercorrection?

I understand why this was necessary in the 60s and earlier, but I do find it odd that Nikon was able to manage so well without additional corrections in the 80s, followed by Olympus and Mitutoyo, while Leica and Zeiss cling to it still. I kind of assume Leica and Zeiss should have the best engineers...
by Scarodactyl
Tue Mar 12, 2024 5:25 pm
Forum: My microscope
Topic: what objectives have you tried on wild M8
Replies: 1
Views: 123

Re: what objectives have you tried on wild M8

65mm thread objectives have an added 1.25x magnification on m50/m60 systems like the M8, so it would act as a ~0.78x. Leica plan apo stereo objectives are quite nice.
by Scarodactyl
Tue Mar 05, 2024 11:55 pm
Forum: Microscopes and optics
Topic: Polylite SC endusers(?)
Replies: 39
Views: 1320

Re: Polylite SC endusers(?)

That .32X fractional lens is to compensate for the tube length and reduce unwanted alterations in W.D. It isn't needed if the tube length is kept to something close to the reference length. My understanding is thst, as designed, a viewing or afocal photo eyepiece projects an image at infinity focus...
by Scarodactyl
Tue Mar 05, 2024 2:09 am
Forum: Microscopes and optics
Topic: Polylite SC endusers(?)
Replies: 39
Views: 1320

Re: Polylite SC endusers(?)

A wild eyepiece isn't going to do what you need it to corrections-wise, they are basically neutral (and their field coverage is awful, 21mm fn). But that general setup with a widefield Riechert eyepiece and a shorter focal length lens subbed in for the 0.32x lens (maybe 40mm) could give quite good r...
by Scarodactyl
Mon Mar 04, 2024 2:16 am
Forum: Microscopes and optics
Topic: Polylite SC endusers(?)
Replies: 39
Views: 1320

Re: Polylite SC endusers(?)

JWW wrote:
Sun Mar 03, 2024 5:19 pm
A couple of super old cell phone shot through the eyepiece of the Polylite.

-JW:
Thanks, this looks like a very good system!
by Scarodactyl
Sat Mar 02, 2024 8:26 pm
Forum: Microscopes and optics
Topic: Polylite SC endusers(?)
Replies: 39
Views: 1320

Re: Polyvar SC endusers(?)

Very nice unit! Unfortunately I don't think any specific information is available. People have looked for the manual before and thus far had no luck. It is typical for these highly specialized units that were sold to industry rather than academic labs. The photo tube likely has correcting optics sin...
by Scarodactyl
Sat Mar 02, 2024 5:08 am
Forum: Microscopes and optics
Topic: Selling old Leitz Laborlux or SM?
Replies: 20
Views: 734

Re: Selling old Leitz Laborlux

I am not a leitz expert but I think you have a Heine condenser there which is sonewhat sought after.
by Scarodactyl
Sat Mar 02, 2024 4:51 am
Forum: Microscopes and optics
Topic: Selling old Leitz Laborlux or SM?
Replies: 20
Views: 734

Re: Selling old Leitz Laborlux

You can also search sold listings on eBay. They go back a decent ways.
by Scarodactyl
Sat Mar 02, 2024 4:51 am
Forum: Microscopes and optics
Topic: GF Planachromat infinity optics for Jenamed microscope
Replies: 9
Views: 407

Re: GF Planachromat infinity optics for Jenamed microscope

Oh cool, just using an m25 15mm long spacer? How did it dk in the corners being pushed down 20%?
by Scarodactyl
Fri Mar 01, 2024 11:09 pm
Forum: Microscopes and optics
Topic: GF Planachromat infinity optics for Jenamed microscope
Replies: 9
Views: 407

Re: GF Planachromat infinity optics for Jenamed microscope

These are from the 80s from what I understand, pretty late in the Jena lineup. They come up pretty frequently on eBay. I have not tried them but reviews have been quite good.
by Scarodactyl
Fri Mar 01, 2024 10:14 pm
Forum: Microscopes and optics
Topic: GF Planachromat infinity optics for Jenamed microscope
Replies: 9
Views: 407

Re: GF Planachromat infinity optics for Jenamed microscope

-A means it is internally corrected (ie part of the CF250 system, using a 250mm focal length tube length neutral tube lens, no eyepiece corrections).
-This one is meant for reflected light )but you could get away with transmitted light.)
-I believe they have a 25mm thread.
-250mm
by Scarodactyl
Fri Mar 01, 2024 8:42 am
Forum: Microscopes and optics
Topic: has anyone used Leica S-APO 10x objective?
Replies: 9
Views: 474

Re: has anyone used Leica S-APO 10x objective?

Edit: post was meant for a different forum context, whoops.
by Scarodactyl
Fri Mar 01, 2024 3:09 am
Forum: Microscopes and optics
Topic: has anyone used Leica S-APO 10x objective?
Replies: 9
Views: 474

Re: has anyone used Leica S-APO 10x objective?

For a bit there they were branding fluorites as s-apo (semi apo). Given the lack of full internal correction on top of that I wouldn't consider it a very appealing target.
Edit: I got mixed up on which forum I was on.
by Scarodactyl
Sun Feb 25, 2024 2:45 am
Forum: Microscopes and optics
Topic: Evolution of the Olympus microscope line
Replies: 2
Views: 379

Re: Evolution of the Olympus microscope line

That sounds like a lot of work to ask from people. You can read about the basics here https://www.olympus-lifescience.com/en/ ... eum/micro/
by Scarodactyl
Sat Feb 24, 2024 5:45 am
Forum: Microscopes and optics
Topic: AO Sterostar Prism
Replies: 25
Views: 1567

Re: AO Sterostar Prism

Congrats! Incide tally I have a trinocular attachment for this model--if you ever want one drop me a line. They're kind of rare but I can sell it reasonably.
by Scarodactyl
Wed Feb 21, 2024 7:57 pm
Forum: Microscopes and optics
Topic: Using modern olympus objectives on old olympus
Replies: 10
Views: 688

Re: Using modern olympus objectives on old olympus

Alexander wrote:
Wed Feb 21, 2024 7:41 pm
Reconsider that point.
The 100x and 40x in this test are made for the same optical system so if that were the issue you would expect both to perform poorly. That's aside from this combination being something of a known quatity from previous testing.

If you can return this objective I'd try that.
by Scarodactyl
Wed Feb 21, 2024 6:31 pm
Forum: Microscopes and optics
Topic: Using modern olympus objectives on old olympus
Replies: 10
Views: 688

Re: Using modern olympus objectives on old olympus

I think your objective is decentered or otherwise borked. Darn shame.
The tube lens in the bh2 illuminators is pretty neutral, the far corners on aps-c seemed to do something when I had one but I didn't test it that well. Either way it is fairly ckmpatible with modern olympus.
by Scarodactyl
Tue Feb 20, 2024 5:38 pm
Forum: Camera systems and imaging
Topic: higher magnifications with a M4/3 camera on a Leica M420?
Replies: 6
Views: 591

Re: higher magnifications with a M4/3 camera on a Leica M420?

I have never used a m4/3 camera before, but I assume since the mount is the same that you could use any m4/3 teleconverter, though of course some are probably much better than others.
by Scarodactyl
Tue Feb 20, 2024 4:44 pm
Forum: Microscopes and optics
Topic: Is it ok to use metalloscopy objective in biology microscope?
Replies: 8
Views: 603

Re: Is it ok to use metalloscopy objective in biology microscope?

This will not work. Optically it's fine, Motic's tube lenses are made to the Olympus standard and will play perfectly fine with mitutoyo spec objectives (though it would give 9x rather than 10x magnification), and at NA 0.28 you won't have coverslip issues. They also don't mind transmitted light. Bu...
by Scarodactyl
Tue Feb 20, 2024 4:39 pm
Forum: Microscopes and optics
Topic: DIC on Nikon Eclipse Ci-L
Replies: 4
Views: 389

Re: DIC on Nikon Eclipse Ci-L

On the older E line the E400 was prevented from mounting doc hardware by its geometry. With some grinding into the metal frame one could be mounted (I think Pete demonstrated this in an older thread). It might be a similar situation here.
by Scarodactyl
Tue Feb 20, 2024 4:37 pm
Forum: Camera systems and imaging
Topic: higher magnifications with a M4/3 camera on a Leica M420?
Replies: 6
Views: 591

Re: higher magnifications with a M4/3 camera on a Leica M420?

Yes, that spacing is going to matter. I don't know what you can get away with in using one out of spec before the image quality degrades noticeably, but I would guess you can't get away with much.
by Scarodactyl
Mon Feb 19, 2024 8:24 am
Forum: Camera systems and imaging
Topic: higher magnifications with a M4/3 camera on a Leica M420?
Replies: 6
Views: 591

Re: higher magnifications with a M4/3 camera on a Leica M420?

On the m420 you'd use any of the standard 38mm adapters that Wild offered. That could be the afocal setup with a viewing eyepiece (not great) or afocal with one of the dedicated photo eyepieces (probably better), but if you're using m4/3 it's probably going to be a poor result. You could also use Ni...
by Scarodactyl
Sun Feb 18, 2024 10:53 pm
Forum: Microscopy accessories
Topic: Wild Heerbrugg M5 power supply
Replies: 14
Views: 797

Re: Wild Heerbrugg M5 power supply

The M5 was made for decades. They msy have offered it with a few similarly specced power supplies over that period. I've certainly seen plenty of variations from the wild/leitz family.
by Scarodactyl
Thu Feb 15, 2024 2:50 am
Forum: Beginner's corner
Topic: seeing double images
Replies: 10
Views: 3850

Re: seeing double images

I have had stereo microscopes that seemed to be aligned on testing but nevertheless were painful for me and others to use, taking unpleasant effort to converge. Don't ask me why though. Easy enough to swap the head.
by Scarodactyl
Tue Feb 13, 2024 6:53 pm
Forum: Microscopes and optics
Topic: Wild M8 vs Wild MZ3
Replies: 5
Views: 511

Re: Wild M8 vs Wild MZ3

The m8 is a little higher tier than the m3z optically but they're both very solid. Especially if the m3z has a normal 1x and not a plan 1x the m8 will definitely outperform it in a very noticeable way. The m3z does have more optional accessories though, including the s stand and even a native planap...
by Scarodactyl
Mon Feb 12, 2024 10:59 pm
Forum: Illumination Techniques
Topic: Dual goose neck illuminators
Replies: 2
Views: 356

Re: Dual goose neck illuminators

If it is a halogen source don't bother below 150w. Get a used one from a good brand. I unfortunately don't know about the newer LED ones.
by Scarodactyl
Sun Feb 11, 2024 3:52 pm
Forum: Microscopes and optics
Topic: Fisher Scientific Micromaster Microscopes
Replies: 9
Views: 805

Re: Fisher Scientific Micromaster Microscopes

As far as I can tell Seiwa still only makes metallurgical/laser objectives, mostly but not entirely in the Miutotoyo 95mm standard/space. I have a feeling that that must be crossed wires on their part.
by Scarodactyl
Sun Feb 11, 2024 3:41 pm
Forum: Camera systems and imaging
Topic: Recommendation Camera for Zeiss Axiovert 25CFL with 1x Adapter
Replies: 11
Views: 866

Re: Recommendation Camera for Zeiss Axiovert 25CFL with 1x Adapter

That will depend on your objectives and dye. I set up a friend's lab with a leitz I refurbished with led lamphouses and a dslr for shooting and it gives them at least adequate results for their research.