Search found 382 matches

by Scarodactyl
Tue Oct 22, 2019 3:43 pm
Forum: Beginner's corner
Topic: Counterfeit detection
Replies: 2
Views: 74

Re: Counterfeit detection

Most dslrs will connect via usb as well, and you will get more bang for your buck in many cases. It would help to know how you want to illuminte the subject (thus what kind of lighting you need), and what field or fields of view you need. An indistrial zoom lens like a navitar, optem, unitron, or mo...
by Scarodactyl
Sat Oct 19, 2019 10:53 am
Forum: Beginner's corner
Topic: Focus distance
Replies: 6
Views: 98

Re: Focus distance

20x is about the reasonable limit on eyepieces, though higher do exist. You are unlikely to find an aux lens above 2x, and even with high end systems with whole interchangeable objectives going over 2x is uncommon. At some point the short working distance makes it impractical. Either way, a stereo s...
by Scarodactyl
Fri Oct 18, 2019 11:12 pm
Forum: Microscopes and optics
Topic: First Surface Mirror?
Replies: 13
Views: 1754

Re: First Surface Mirror?

Could a dental mirror be used for an image-reflecting sirface? I have some old sz7 trinocular add-ons with bad mirrors, and sizing a glass fsm is a pain.
by Scarodactyl
Fri Oct 18, 2019 9:40 pm
Forum: Beginner's corner
Topic: Cameras
Replies: 6
Views: 127

Re: Cameras

Webcams use similar tech for sure, though the quality of sensor varies a lot in microscope cameras. That said, giving you 1mp and interpolating it to hell to fake 14mp would be particularly bad imo. 50 bucks can get you this 5mp hayear, which seems to actually deliver about 5mp from my brief testing...
by Scarodactyl
Fri Oct 18, 2019 4:55 pm
Forum: Beginner's corner
Topic: Cameras
Replies: 6
Views: 127

Re: Cameras

Yeah, a .33x adapter would be ideal, though ones that low are a bit uncommon. It would probably be easier to get a .4x or .5x and live with a bit of cropping in that situation. That camera is probably fine, though I'd be concerned about what they mran by "effective pixels". You can probably save som...
by Scarodactyl
Thu Oct 17, 2019 6:44 pm
Forum: My microscope
Topic: Euromex MB 1051, Canon m6 (projection)
Replies: 7
Views: 142

Re: Euromex MB 1051, Canon m6 (projection)

Ah, ok, that makes sense. Yeah, if you have enough resolution in your camera this approach makes sense, as you can always crop more later.
by Scarodactyl
Thu Oct 17, 2019 2:33 pm
Forum: Beginner's corner
Topic: Cameras
Replies: 6
Views: 127

Re: Cameras

Whether you will need reducing optics for a c-mount camera depends on the size of the sensor. Typically the trinoc ports are set up so a 1" sensor camera will not need any reducing optics, and thus smaller sensors need increasing reduction to capture the whole field of view (.5x for a 1/2" sensor, e...
by Scarodactyl
Thu Oct 17, 2019 12:24 am
Forum: My microscope
Topic: Euromex MB 1051, Canon m6 (projection)
Replies: 7
Views: 142

Re: Euromex MB 1051, Canon m6 (projection)

40mm tends to produce an image with edges that almost hit the edge of the 10x eyepiece's field of view (when focused to infinity), giving you a nice near-optimal rectangle with no vignetting: https://i.imgur.com/NxqNpxF.png This is the entire image through a 10x eyepiece (taken with my phone camera)...
by Scarodactyl
Wed Oct 16, 2019 5:06 am
Forum: Introduce yourself
Topic: I am new to this forum and not that good in english
Replies: 6
Views: 146

Re: I am new to this forum and not that good in english

Welcome! A lot of people doing electronics, watchmaking, jeweling etc seem to be big fans of these Meiji clones (sold by Amscope and many others). I hope you'll let us know how you like it!
by Scarodactyl
Tue Oct 15, 2019 7:26 pm
Forum: My microscope
Topic: Euromex MB 1051, Canon m6 (projection)
Replies: 7
Views: 142

Re: Euromex MB 1051, Canon m6 (projection)

Typically a 40mm lens is used for afocal onto aps-c. A 22mm is probanly about doubling magnification vs a 10x eyepiece.
by Scarodactyl
Sun Oct 13, 2019 2:21 am
Forum: My microscope
Topic: DIY DIC Effect on Darkfield.... unreal
Replies: 6
Views: 588

Re: DIY DIC Effect on Darkfield.... unreal

Nice results for sure!
by Scarodactyl
Sat Oct 12, 2019 2:02 pm
Forum: Beginner's corner
Topic: Stereo Vs Biological Microscope Eyepieces
Replies: 12
Views: 535

Re: Stereo Vs Biological Microscope Eyepieces

These may or may not be compensating. Stereo eyepieces direct from china should be pretty cheap, so it is probably worth experimenting.
by Scarodactyl
Sat Oct 12, 2019 1:07 pm
Forum: Beginner's corner
Topic: Stereo Vs Biological Microscope Eyepieces
Replies: 12
Views: 535

Re: Stereo Vs Biological Microscope Eyepieces

Stereo eyepieces tend to apply little or no correction. So for Nikon scopes, for instance, they are pretty compatible between their stereo and compound lines since neither requires much correction. But if you need correcting eyepieces for your objectives you will get poor results.
by Scarodactyl
Sat Oct 12, 2019 3:44 am
Forum: Beginner's corner
Topic: Fusing glass slides
Replies: 23
Views: 840

Re: Fusing glass slides

I wonder if this is something you could do with a microforge. I see them for sale on eBay (since they have microscopes attached) and apparently they were used for some sort of fine glasswork. Might be a good excuse to pick up another scope....
by Scarodactyl
Sat Oct 12, 2019 12:01 am
Forum: Microscopes and optics
Topic: Leitz binocular head teardown
Replies: 6
Views: 394

Re: Leitz binocular head teardown

It does, but every now and then they'll surprise you and disappear with the first wipe. It's worth a try, because if it doesn't work oh well, it was a loss anyway, if it does it's the best feeling, like when a screw remover finally works on a stripped bolt.
by Scarodactyl
Fri Oct 11, 2019 12:28 am
Forum: Camera systems and imaging
Topic: Trinocular Modification for an Olympus CX31?
Replies: 17
Views: 939

Re: Trinocular Modification for an Olympus CX31?

You should keep one of the stereos if you don't already have a nice one. They are amazing tools.
by Scarodactyl
Sun Oct 06, 2019 7:54 pm
Forum: Beginner's corner
Topic: Newbie with information overload looking for first microscope
Replies: 22
Views: 919

Re: Newbie with information overload looking for first microscope

There are a variety of solutions depending on the system. Many of the older systems have solutions for small sensor sizes because people wanted to use video cameras, so that isn't a huge concern usually. There is always some way to get it done, one way or another. Some trinocs are set up with a fixe...
by Scarodactyl
Fri Oct 04, 2019 1:22 am
Forum: Microscopes and optics
Topic: A DIY Wild M400 / M420 Macroscope
Replies: 1
Views: 179

A DIY Wild M400 / M420 Macroscope

Maybe this should be in homemade microscope adaptations? Well, whatever. This is my latest dumb boondoggle, and I think it turned out all right! Have you dreamed of owning a Wild M400 or M420, but the price was too high? Are you also comfortable buying components on eBay, reasonably handy with a san...
by Scarodactyl
Thu Oct 03, 2019 11:50 pm
Forum: Beginner's corner
Topic: Newbie with information overload looking for first microscope
Replies: 22
Views: 919

Re: Newbie with information overload looking for first microscope

Meiji has an excellent reputation for stereos, but they actually run kind of expensive used in my experience. You'll tend to have more luck finding a bausch and lomb, american optical, olympus or nikon at a lower price point.
by Scarodactyl
Thu Oct 03, 2019 9:51 pm
Forum: Microscopes and optics
Topic: My Latest Microscope
Replies: 7
Views: 353

Re: My Latest Microscope

That's irridescent labradorite, likely from Madagascar or Canada. The color is produced by the crystallographic incompatibility of the two plagioclase feldspar endmembers, albite (sodium feldspar) and anorthtite (calcium feldspar). They're perfectly happy to intermix at high temperatures, but at low...
by Scarodactyl
Thu Oct 03, 2019 2:20 pm
Forum: Microscopes and optics
Topic: My Latest Microscope
Replies: 7
Views: 353

Re: My Latest Microscope

Neat! Stereos are super fun. Any chance it was from Mikon?
by Scarodactyl
Mon Sep 30, 2019 8:57 am
Forum: My microscope
Topic: Zeiss Tessovar
Replies: 5
Views: 251

Re: Zeiss Tessovar

Thanks for the link. I went and read his informative writeup as well. The max NA without aux lenses is listed at about .05, which is about half of the Wild makrozoom, but it sounds like color correction might be a bit better. They must produce a great image overall given their reputation, though I h...
by Scarodactyl
Mon Sep 30, 2019 1:35 am
Forum: My microscope
Topic: Zeiss Tessovar
Replies: 5
Views: 251

Re: Zeiss Tessovar

I've seen these guys recommended in the same breath as the Wild M400 series, but to be honest I am not entirely sure how they work. Did they have an option for eyepieces? Do they have zoom optics, or fixed mag? Parfocal or did magnification changes change the working distance? They certainly look li...
by Scarodactyl
Sat Sep 28, 2019 3:44 am
Forum: Camera systems and imaging
Topic: what camera lens to use for Parphocal setup?
Replies: 19
Views: 1274

Re: what camera lens to use for Parphocal setup?

Just as a quick update, here is what I just got set up: https://i.imgur.com/34KrB18.jpg Just a quick update, I finally had a chance to test position by stopping down the pancake lens. The Raf adapter has a small lip that positions the lens just a little bit above of the ideal point--it was easy eno...
by Scarodactyl
Wed Sep 25, 2019 6:51 pm
Forum: Camera systems and imaging
Topic: what camera lens to use for Parphocal setup?
Replies: 19
Views: 1274

Re: what camera lens to use for Parphocal setup?

I'd leave the lens wide open. It does need to be set to infinity. You have some options for adapting it. Using the filter threads to adapt on a 40mm clamp might be easiest, yours I think has a 49mm thread but it should be possible to adapt woth a stepup filter and the parts I linked in my earlier po...
by Scarodactyl
Tue Sep 24, 2019 10:17 pm
Forum: For forum members who want to buy and sell equipment
Topic: UHL Rod Microscope
Replies: 11
Views: 352

Re: UHL Rod Microscope

Yeah, to be honest I just wanted an excuse to show off my comps.
by Scarodactyl
Tue Sep 24, 2019 9:57 pm
Forum: For forum members who want to buy and sell equipment
Topic: UHL Rod Microscope
Replies: 11
Views: 352

Re: UHL Rod Microscope

The SPI/Graticules unit likely doesn't command that type of price used though: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F352702842104 https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2F133181800130 These are likely older iterati...
by Scarodactyl
Tue Sep 24, 2019 8:45 pm
Forum: For forum members who want to buy and sell equipment
Topic: UHL Rod Microscope
Replies: 11
Views: 352

Re: UHL Rod Microscope

This is a pretty standard setup even if the bramd itself is kind of uncommon. A couple Russian ones and an older one from Southern Precision (maybe Chinese or Japanese) have sold for about 50 bucks on eBay. This is a German brand but not exactly a well known one so I wouldn't expect a huge premium f...
by Scarodactyl
Tue Sep 24, 2019 7:20 pm
Forum: Beginner's corner
Topic: help buying a microscope
Replies: 3
Views: 256

Re: help buying a microscope

Stereo microscopes are wonderful tools. The MBS-10 in the article is a decent scope but I think not really top end (I say 'I think' just because I haven't used one myself, and have to draw from somewhat varied second-hand accounts) so you can affordably get sinilar or better performance. There are t...
by Scarodactyl
Mon Sep 23, 2019 2:57 pm
Forum: Illumination Techniques
Topic: Microscope fan cooled illuminator
Replies: 8
Views: 314

Re: Microscope fan cooled illuminator

I wonder if one of those cool/dumb bladeless fans would work in this context.