Search found 1157 matches

by Scarodactyl
Fri Jan 08, 2021 9:54 pm
Forum: My microscope
Topic: Deleted
Replies: 9
Views: 487

Re: The wisest way to buy a microscope

Woahhh sorry, you convinced me lasvideo, I take back everything I said.
by Scarodactyl
Fri Jan 08, 2021 3:23 am
Forum: Microscopes and optics
Topic: Nikon gene sequencer objectives
Replies: 47
Views: 1476

Re: Nikon gene sequencer objectives

I think the best results I've gotten with Nikon objectives were via direct projection. I'll try to do a proper test of it with these objectives at some point, I just need to design and print out an m25 to m26 adapter to fit them onto my scope (edit: sorry I forgot I don't have a good stand for trans...
by Scarodactyl
Thu Jan 07, 2021 8:44 pm
Forum: Beginner's corner
Topic: LMscope
Replies: 2
Views: 127

Re: LMscope

LMscope is a legitimate company operating in a small niche. I think their prices are aimed at institutions looking for a plug'n'play solution, and there are more economical ways for a hobbyist to get the same or better results. A few more details about your scope and how it's set up (trinocular head...
by Scarodactyl
Thu Jan 07, 2021 8:17 pm
Forum: My microscope
Topic: Deleted
Replies: 9
Views: 487

Re: The wisest way to buy a microscope

Only lower end big four offerings are made in China, but it is a good point. One other advantage of accu-scope in particular is that they have a dealer network, in many cases having taken on companies either cut off or disaffected by the big four. There is one within a shortish drive from my house (...
by Scarodactyl
Thu Jan 07, 2021 4:02 am
Forum: Microscopes and optics
Topic: Anyone know what the biggest 'n-tuple' nosepiece available is?
Replies: 6
Views: 272

Anyone know what the biggest 'n-tuple' nosepiece available is?

Microscope companies often brag about having the biggest zoom ratio, highest resolution, lowest parfocal mag, etc. But I have found this question a bit hard to answer via quick googlin': who provides the nosepiece with the most objective slots? Heptuple ones are fairly well known from some brands. I...
by Scarodactyl
Tue Jan 05, 2021 4:03 pm
Forum: Camera systems and imaging
Topic: Parfocal distance
Replies: 2
Views: 250

Re: Parfocal distance

No, there are lenses built in to compensate for that. On some accessories this adds a small extra magnification factor.
by Scarodactyl
Tue Jan 05, 2021 6:31 am
Forum: Microscopes and optics
Topic: Monochromatic Microscopes?
Replies: 14
Views: 549

Re: Monochromatic Microscopes?

How wide do you have? The widest field number that exists as far as I know are mitutoyo ultra widefield eyepieces with a 30mm FN (their objectives can all cover full frame, and some can even cover medium format decently with a good tube lens). I've nevwr gotten to try those, though bausch and lomb 1...
by Scarodactyl
Tue Jan 05, 2021 6:03 am
Forum: Microscopes and optics
Topic: Monochromatic Microscopes?
Replies: 14
Views: 549

Re: Monochromatic Microscopes?

Have you used ultra widefield eyepieces before? In my experience they're really nice but it's more of a luxury than a necessity, with the main utility being more accurate framing of pictures when I am doing direct projection onto aps-c. Generally you want to move the slide rather than your eyes whwn...
by Scarodactyl
Tue Jan 05, 2021 1:22 am
Forum: Microscopes and optics
Topic: Monochromatic Microscopes?
Replies: 14
Views: 549

Re: Monochromatic Microscopes?

I am not sure what niche this would serve. If you need to look at a wider field than standard there are specialty low mag compound objectives, stereomicroscopes and macroscopes. Wider field numbers at a given magnification have diminishing returns, and Nikon actually went down from 26.5mm to 25mm ma...
by Scarodactyl
Tue Jan 05, 2021 1:13 am
Forum: Microscopes and optics
Topic: Unitron Unimet Info Search
Replies: 3
Views: 237

Re: Unitron Unimet Info Search

I think it's the Union MCB-1. They're still around and seem to still make them, might be worth dropping them a line.
by Scarodactyl
Mon Jan 04, 2021 7:44 pm
Forum: Microscopes and optics
Topic: Unitron Unimet Info Search
Replies: 3
Views: 237

Re: Unitron Unimet Info Search

I think these were made by Union Optical, one of the obscure Japanese producers. Many of Unitron's metallurgical scopes were, including thr similarly named hisomet.
by Scarodactyl
Mon Jan 04, 2021 6:05 pm
Forum: Microscopes and optics
Topic: Nikon gene sequencer objectives
Replies: 47
Views: 1476

Re: Nikon gene sequencer objectives

Yup, I got a few. Maybe that guy will list more, maybe not. They go up in waves.
by Scarodactyl
Mon Jan 04, 2021 5:27 pm
Forum: Microscopes and optics
Topic: Nikon gene sequencer objectives
Replies: 47
Views: 1476

Re: Nikon gene sequencer objectives

The one with a normal label is the one you want. The other two are also excellent but require a thicker cover slip.
This is one of the nicest objectives you will use, it's just great. Just be sure you're ready for the longer parfocal distance, m25 thread and infinity correction.
by Scarodactyl
Sun Jan 03, 2021 10:34 pm
Forum: Camera systems and imaging
Topic: Budget Friendly BH2 Video?
Replies: 40
Views: 1134

Re: Budget Friendly BH2 Video?

A good speed booster above a 2.5x nfk would probably work well. Teleconverters are sometimes used in the opposite situation where a direct projected image is too small for full frame.
by Scarodactyl
Sat Jan 02, 2021 5:28 pm
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 31
Views: 823

Re: Zeiss Citoval 2

It's probably best to avoid using the term 'objective' to describe a conventional camera lens in a microscopy context (I understand that's normal convention in some countries, just helps clarity in this context).
by Scarodactyl
Sat Jan 02, 2021 5:25 pm
Forum: Camera systems and imaging
Topic: I want to know the FOV of Leitz variable eyepiece。20mm? 22mm? 25mm?
Replies: 7
Views: 548

Re: I want to know the FOV of Leitz variable eyepiece。20mm? 22mm? 25mm?

28mm is a very impressive FN, matched by very few objective series. Do the Leitz objectives designed for it actually perform well that far out?
by Scarodactyl
Fri Jan 01, 2021 5:23 pm
Forum: Camera systems and imaging
Topic: Using a ZWO CMOS camera for microscopy
Replies: 5
Views: 255

Re: Using a ZWO CMOS camera for microscopy

No, the image is not parfocal between the camera and the eyepieces - not even close-on either the AmScope Stereoscope or the Swift Compound. This can be one source of trouble. The image is optimized for a particular magnification and working distance, so having to refocus a lot is pushing the optic...
by Scarodactyl
Fri Jan 01, 2021 6:35 am
Forum: Camera systems and imaging
Topic: Using a ZWO CMOS camera for microscopy
Replies: 5
Views: 255

Re: Using a ZWO CMOS camera for microscopy

A 1/2 inch sensor is 8mm on a diagonal. Your stereo microscope's eyepieces probably have a field number of at least 20mm, probably more. So from the start you are cropping out most of your image, which is like doubling the magnification while keeping the same resolution. Stereo microscopes tend to w...
by Scarodactyl
Fri Jan 01, 2021 5:17 am
Forum: Camera systems and imaging
Topic: Motic SMZ143 with Motic 2x SLR Projection Lens
Replies: 40
Views: 4267

Re: Motic SMZ143 with Motic 2x SLR Projection Lens

Leitz eyepieces are definitely correcting (meaning they have precise chromatic and spherical errors put in which cancel ones built into the objectiv, and likely will not give you great results. The scope's own eyepieces should be a better match but they'll be 30mm and most older photo tubes accept 2...
by Scarodactyl
Fri Jan 01, 2021 1:08 am
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 35
Views: 9063

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

OK, here's some worse news. The M3 clone did pretty well, but followup tests have suggested it vignettes in the eyepieces when a photo tube is attached, which is odd. I also finally did a comparison between my M7 and my motic M700z, a nice-looking copy. Though it looks quite good to the eye, the M70...
by Scarodactyl
Fri Jan 01, 2021 12:58 am
Forum: My microscope
Topic: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]
Replies: 35
Views: 9063

Re: Chinese Wild M3 Clone: It's pretty good! [With comparison to mz6]

PS. One key part of Scarodactyl's previous response that I do not understand - - " Using the m400 like that it is the same as a Nikon infinity head (down to a partially compativly dovetail). Not much point to that imo.") Somehow missed this message. My point was just that the M400 series heads are ...
by Scarodactyl
Fri Jan 01, 2021 12:41 am
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 31
Views: 823

Re: Zeiss Citoval 2

Just had a first look at the m700z vs m7 tests, it's worse than I thought. The m700 looks good to the eye but not as good to the camera--still better than some I've tried but not great, especially compared to the wild m7. The eyepieces also vignetted a bit with the trinoc attachment suggesting its m...
by Scarodactyl
Thu Dec 31, 2020 7:39 pm
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 31
Views: 823

Re: Zeiss Citoval 2

I can't really unconditionally recommend the m700z since it might not match the specs you're after, but it's an interesting and lesser-known option. One major downside vs the citoval is the lower max mag, since it is meant for lower mag work. I suspect the optics are better--I haven't tried a citova...
by Scarodactyl
Thu Dec 31, 2020 12:20 am
Forum: Digital processing
Topic: How to take measurements of things under the microscope?
Replies: 11
Views: 432

Re: How to take measurements of things under the microscope?

ImageJ is free software which has measurement and scale setting features. Should be good for this purpose.
by Scarodactyl
Wed Dec 30, 2020 10:04 pm
Forum: Camera systems and imaging
Topic: Images from LabCam and LabCam Pro
Replies: 4
Views: 1068

Re: Images from LabCam and LabCam Pro

Do you mean one of the Nikon digital sight/DS series cameras, rather than a ds5500 (which I think is a dslr)? I had a nikon ds2 5mp camera mounted on a stereo microscope for a bit. It waan't bad but didn't give results as good as my canon t6. Generally dslr/mirrorless cameras will give better result...
by Scarodactyl
Wed Dec 30, 2020 5:27 pm
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 31
Views: 823

Re: Zeiss Citoval 2

A good stereo can take pictures that are good enough to print. There are limitations but it isn't quite as grim as we sometimes make it out to be, even if a macroscope or fixed lenses can give technically better results. That guy has some neat scopes. The motic m700z he has listed is a clone of the ...
by Scarodactyl
Wed Dec 30, 2020 2:58 am
Forum: Camera systems and imaging
Topic: Nikon DSLR, Labophot-2, DiagInc HRD* adapters as a solution?
Replies: 12
Views: 385

Re: Nikon DSLR, Labophot-2, DiagInc HRD* adapters as a solution?

The native nikon solution with the 2.5x pl eyepiece has two components, the eyepiece and the physical adapter which holds the camera the right diatance above the eyepiece. The top of the trinocular head has an internal 23mm tube which holds the eyepiece, and an outer tube which is 42mm in diameter. ...
by Scarodactyl
Tue Dec 29, 2020 10:11 pm
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 31
Views: 823

Re: Zeiss Citoval 2

It is a bit hard to gauge pricing with those factors--if it were in guaranteed excellent condition I'd think 300 was a fair price anywhere, but it sounds more like a surplus situation where the seller can't assess condition and may not know how to pack it well either. The risk involved in buying a s...
by Scarodactyl
Tue Dec 29, 2020 2:40 am
Forum: Camera systems and imaging
Topic: Budget Friendly BH2 Video?
Replies: 40
Views: 1134

Re: Budget Friendly BH2 Video?

I wrote up a brief guide here Thanks. Your write-up mentions a SLR and a [Canon] "EOS" adapter (presumably an EF mount). Are you using a full-frame or APS-C sensor, and what photo eyepiece are you using? I'm assuming that going with this approach discourages the use of a micro 4/3s camera because o...
by Scarodactyl
Tue Dec 29, 2020 1:35 am
Forum: Camera systems and imaging
Topic: Budget Friendly BH2 Video?
Replies: 40
Views: 1134

Re: Budget Friendly BH2 Video?

I wrote up a brief guide here http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=9&t=9093 It is nothing too difficult. The relay eyepiece does some essential corrections, particularly in the periphery, so not using one might give some issues unless you capture only the very center of the ...