Search found 1157 matches
- 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.
- 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...
- 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...
- 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 (...
- 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...
- 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.
- 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...
- 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...
- 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...
- 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.
- 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.
- 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.
- 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.
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.
- 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.
- 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).
- 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?
- 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...
- 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...
- 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...
- 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...
- 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 ...
- 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...
- 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...
- 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.
- 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...
- 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 ...
- 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. ...
- 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...
- 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...
- 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 ...