Search found 1339 matches

by Scarodactyl
Sun Jun 13, 2021 8:09 pm
Forum: Illumination Techniques
Topic: DIC Question
Replies: 106
Views: 3106

Re: DIC Question

That does look promising. I think a stained slide is going to mask the effect, though I am not sure what the ideal subject is for DIC. Diatoms?
by Scarodactyl
Sat Jun 12, 2021 7:38 pm
Forum: Illumination Techniques
Topic: PlasDIC
Replies: 26
Views: 2290

Re: PlasDIC

That guy uses thr same "dic" photo for every listing from what I can see. I would never buy from him.
by Scarodactyl
Sat Jun 12, 2021 4:18 pm
Forum: Microscopes and optics
Topic: Newbie with Olympus BH2 and a camera
Replies: 3
Views: 111

Re: Newbie with Olympus BH2 and a camera

Yup, they still need the eyepiece corrections.
by Scarodactyl
Sat Jun 12, 2021 1:19 am
Forum: Microscopes and optics
Topic: Newbie with Olympus BH2 and a camera
Replies: 3
Views: 111

Re: Newbie with Olympus BH2 and a camera

Post some pictures and we can probably nail down the model. Olympus did a few different setups for this stuff. The eyepieces on this system provide essential optical corrections, so you need one involved. Olympus made photo eyepieces for this which sit in the head's trinocular port (or a standalone ...
by Scarodactyl
Thu Jun 10, 2021 3:58 am
Forum: Microscopy accessories
Topic: What 5x objective is mount inside this WYKO Michelson Interference adapter?
Replies: 1
Views: 76

Re: What 5x objective is mount inside this WYKO Michelson Interference adapter?

Probably a 45mm parfocal Nikon infinity CF objective, from before the CFI60 line.
by Scarodactyl
Wed Jun 09, 2021 1:25 am
Forum: Microscopes and optics
Topic: trinocular head
Replies: 11
Views: 303

Re: trinocular head

I've been curious about this listing. Please let us know how it works out! Even used olympus trinocs are awfully expensive, so this could be a good alternative.
by Scarodactyl
Tue Jun 08, 2021 1:20 am
Forum: Microscopes and optics
Topic: Wild Heerbrugg M8 scraping noise on zoom
Replies: 1
Views: 71

Re: Wild Heerbrugg M8 scraping noise on zoom

The mechanics of an m8 are pretty intuitive, don't be too afraid of opening it up. It kind of sounds like you might have something on the rails, maybe hardened grease. A little bit of relubing with turbine oil might be in order.
by Scarodactyl
Mon Jun 07, 2021 6:32 pm
Forum: Microscopes and optics
Topic: Is this a good objective?
Replies: 13
Views: 340

Re: Is this a good objective?

For just visual use you can get away with a lot of partial incompatibility. My friend's PI has a pair if Leitz laborluxes with olympus, leitz, zeiss, wild and nikon objectives on thrm, and really only the Nikon is visually compromised by the corrections mismatch (parfocality is off but not too bad)....
by Scarodactyl
Thu Jun 03, 2021 2:32 am
Forum: Microscopes and optics
Topic: This looks interesting
Replies: 3
Views: 165

Re: This looks interesting

At this point a stickup at UC San Diego would probably be the only way, but we'll see if it gets brought to market.
by Scarodactyl
Wed Jun 02, 2021 12:49 am
Forum: Beginner's corner
Topic: Help with buying a microscope for photography
Replies: 21
Views: 601

Re: Help with buying a microscope for photography

Photomacrography is a general powerhouse for information about reflected light extreme-macro-to-micro photography equipment. Less so for transmitted light microscopy, though there are certainly some people with expertise in it there. It's certainly an excellent and important resource to be aware of ...
by Scarodactyl
Wed Jun 02, 2021 12:28 am
Forum: Microscopy accessories
Topic: Reticle size?
Replies: 8
Views: 263

Re: Reticle size?

Yes, 'E' stands for 'economical', same as the objectives. They're not bad, but you can upgrade for not much money and get a significant QoL improvement.
by Scarodactyl
Tue Jun 01, 2021 4:37 pm
Forum: Beginner's corner
Topic: Replacing Eyepieces
Replies: 4
Views: 100

Re: Replacing Eyepieces

Generally no, eyepieces in microscopy are differwnt from telescope eyepieces. In some microscopes the eyepiece is an essential part od the optics, correcting for aberrations intentionally left in the objective design to make a fully corrected image. Even outside of that compatibility ia not universa...
by Scarodactyl
Mon May 31, 2021 7:33 am
Forum: Microscopy accessories
Topic: Reticle size?
Replies: 8
Views: 263

Re: Reticle size?

The CFWE eyepieces they bundle with the alphaphot are not great anyway--you might want to upgrade them to CFW/CFWN 10x/20s or the third party chinese 10x/22 eyepieces from eBay I love to shill. (technically I haven't tried that on the alphaphot's head, so I guess there is a possibility the head migh...
by Scarodactyl
Sun May 30, 2021 6:53 am
Forum: Microscopes and optics
Topic: What are the quality criteria for stereo microscopes?
Replies: 16
Views: 661

Re: What are the quality criteria for stereo microscopes?

The smz 1 and 2 models are greenoughs, as well as the recent 440/460, 640/660 and 745. All the Nikon cmos are modular units, separate zoom body and heads, while the greenoughs are one piece. That's sort of a general pattern across stereos with very few exceptions. Nikon does use the terms greenough ...
by Scarodactyl
Sun May 30, 2021 2:09 am
Forum: Microscopes and optics
Topic: What are the quality criteria for stereo microscopes?
Replies: 16
Views: 661

Re: What are the quality criteria for stereo microscopes?

I might have a stereo that's clear but misaligned, which could be ideal for your usecase. I'll dig around.
by Scarodactyl
Thu May 27, 2021 9:41 pm
Forum: My microscope
Topic: How does a collection happen?
Replies: 8
Views: 567

Re: How does a collection happen?

I don't know how many I own (it's hard to add up the fractiosn anyway).
by Scarodactyl
Thu May 27, 2021 8:34 pm
Forum: My microscope
Topic: Latest Addition Olympus SZH
Replies: 17
Views: 4337

Re: Latest Addition Olympus SZH

That's really neat! I haven't ever taken one apart, good to know it's easy to get them off. If direct projection gives a good image corner to corner it really does imply Olympus decided the nfks were just 'good enough' rather than ideal, which is what I'd suspected. I guess I need to pick up another...
by Scarodactyl
Wed May 26, 2021 12:07 am
Forum: My microscope
Topic: Latest Addition Olympus SZH
Replies: 17
Views: 4337

Re: Latest Addition Olympus SZH

The adapter you have there is the famous Photomicro-L, coupled with a nfk 2.5x photo eyepiece. The bayonet on top is for an Olympus OM camera, but a simple OM to EF adapter will work perfectly with your canon. The 2.5x eyepiece puts out an image well sized for a full frame camera, but the crop on a ...
by Scarodactyl
Tue May 25, 2021 11:48 pm
Forum: Introduce yourself
Topic: polyvar photo tube
Replies: 6
Views: 369

Re: polyvar photo tube

Facebook is, in my opinion, worse than a forum in just about every way for discussing this sort of thing. But that's where a lot of people are so them's the breaks I guess.
by Scarodactyl
Tue May 25, 2021 10:18 pm
Forum: Introduce yourself
Topic: polyvar photo tube
Replies: 6
Views: 369

Re: polyvar photo tube

I didn't respond here since I responded to his identical query over in the amateur microscopy group on facebook, but didn't check back in there. The adapter he is using is from Best Scientific, who are the US distributor for Optem's camera adapters. Like many other well-known businesses in this spac...
by Scarodactyl
Tue May 25, 2021 4:26 pm
Forum: Camera systems and imaging
Topic: solvent information required
Replies: 32
Views: 1008

Re: solvent information required

I once got a stereo microscope head with opaque, brown grease smeared on one prism with big fingerprints in it. Alcohol would not touch it, but acetone did the trick. It's almost never the right choice but probably worth a shot.
by Scarodactyl
Mon May 24, 2021 8:18 pm
Forum: Illumination Techniques
Topic: DIC Question
Replies: 106
Views: 3106

Re: DIC Question

This should probably be split off into another discussion. LouiseScot is working on an extremely cool project and I thinj we really don't want to make it harder to discuss by retreading this in her thread.
by Scarodactyl
Mon May 24, 2021 12:16 am
Forum: Camera systems and imaging
Topic: Camera fov
Replies: 8
Views: 420

Re: Camera fov

The typical inexpensive (relatively) microscope camera will have a 1/2.3" sensor, just over 6x4mm, or a 7.7mm diagonal. If your eyepieces have an 18mm FN then a 0.5x reduction lens will get the camera's FoV close to a reasonable crop of what you see in the eyepieces, though depending on the quality ...
by Scarodactyl
Sun May 23, 2021 10:14 pm
Forum: Illumination Techniques
Topic: DIC Question
Replies: 106
Views: 3106

Re: DIC Question

DiatomsCrop2_0130.jpg This is definitely intriguing, and looks like it's moving in the right direction. This is a pic I took of the setup: That looks a bit different than I expected--I would guess putting it through two additional lenses after the tube lens might be having a detrimental effect here...
by Scarodactyl
Sun May 23, 2021 10:09 pm
Forum: Illumination Techniques
Topic: DIC Question
Replies: 106
Views: 3106

Re: DIC Question

From the Olympus website: “ The tube length in infinity-corrected microscopes is referred to as the reference focal length and ranges between 160 and 200 millimeters..." The same guy wrote up these introductory articles for Olympus, Nikon and Zeiss with minor variations (though you can see a few pa...
by Scarodactyl
Sun May 23, 2021 5:40 pm
Forum: My microscope
Topic: I just bought a new stereo microscope
Replies: 19
Views: 1156

Re: I just bought a new stereo microscope

Stereo microscopes are the ultimate tool for visual inspection. Anything you need a closer look at in the macro range and any task you need to perform under magnification is best under a stereo microscope. In my line of work that includes looking at the inclusion scene in gems to determine treatment...
by Scarodactyl
Fri May 21, 2021 11:34 pm
Forum: My microscope
Topic: I just bought a new stereo microscope
Replies: 19
Views: 1156

Re: I just bought a new stereo microscope

The objectives probably don't produce that big of an image, so wouldn't really be possible to have a good 5x. Probably better to wait until a higher end stereo with a wider zoom range shows up used than spend money chasing a workable 5x eyepiece.
by Scarodactyl
Fri May 21, 2021 11:17 pm
Forum: Illumination Techniques
Topic: DIC Question
Replies: 106
Views: 3106

Re: DIC Question

To my understanding the Olympus UIS2 requires a correction All UIS/UIS2 olympus infinity objectives are fully internally corrected. Hmm: from the Olympus guide on selecting objectives: “ The UIS2 optical system optimally corrects aberration with a dedicated telan lens and an eyepiece so that the co...
by Scarodactyl
Fri May 21, 2021 6:13 pm
Forum: Beginner's corner
Topic: Bausch & Lomb SZ4 to SZ7 differences?
Replies: 13
Views: 395

Re: Bausch & Lomb SZ4 to SZ7 differences?

Not to mention the various poorly documented variations used in stereoscopes.
by Scarodactyl
Fri May 21, 2021 6:02 pm
Forum: Illumination Techniques
Topic: DIC Question
Replies: 106
Views: 3106

Re: DIC Question

To my understanding the Olympus UIS2 requires a correction All UIS/UIS2 olympus infinity objectives are fully internally corrected. The chrimatic aberrations showing up in photos are well beyond what you should be seeing, even with a pretty low end objective. I think getting that more dialled in sh...