Search found 2775 matches
- Mon Jan 22, 2024 3:49 pm
- Forum: Microscopy accessories
- Topic: American Optical reflected DIC info?
- Replies: 6
- Views: 771
Re: American Optical reflected DIC info?
User Microworldofgems has a complete set and has published some amazing pictures from it.
- Sun Jan 21, 2024 6:12 am
- Forum: Microscopes and optics
- Topic: Where is Rafcamera?
- Replies: 5
- Views: 816
Re: Where is Rafcamera?
That is very true about eBay--it's extremely expensive to sell there.
- Sat Jan 20, 2024 5:05 am
- Forum: Microscopes and optics
- Topic: Leica M80 Plan Objective
- Replies: 17
- Views: 1697
Re: Leica M80 Plan Objective
Being located in Russia probably makes ecommerce difficult right now. Actually he lists his location as Belarus. Given the proximity to Russia etc it could impact delivery. Although that did not seem to be the case with me. From what I have heard they are made in Belarus but he is in Russia, which ...
- Fri Jan 19, 2024 7:23 pm
- Forum: My microscope
- Topic: It is worth it?
- Replies: 3
- Views: 1122
Re: It is worth it?
It depends what you're doing and how it's equipped. My E800 is absolutely amazing but I have to admit I don't use it that much since I rarely look at alides and haven't ended up starting.
- Fri Jan 19, 2024 1:15 am
- Forum: Microscopes and optics
- Topic: Leica M80 Plan Objective
- Replies: 17
- Views: 1697
Re: Leica M80 Plan Objective
Being located in Russia probably makes ecommerce difficult right now.
- Thu Jan 18, 2024 8:11 pm
- Forum: Microscopes and optics
- Topic: Leica M80 Plan Objective
- Replies: 17
- Views: 1697
Re: Leica M80 Plan Objective
Within a system it may not vary as much, but typically when you move up to the higher tier of objectives (nikon HR, Leica 65mm series etc) working distances drop and resolutions increase since they need to handle higher max magnifications. The resolution on the 1x plan apo on my M10 knocks my socks ...
- Thu Jan 18, 2024 7:34 pm
- Forum: Microscopes and optics
- Topic: Leica M80 Plan Objective
- Replies: 17
- Views: 1697
Re: Leica M80 Plan Objective
Very nice! Those achromats are OK and all but the atep up in going to a good plan objective is pretty big.
- Thu Jan 18, 2024 7:32 pm
- Forum: Microscopes and optics
- Topic: Has anyone compared Chinese objectives to similar objectives from the Big Four?
- Replies: 3
- Views: 726
Re: Has anyone compared Chinese objectives to similar objectives from the Big Four?
Not nearly as relevant as Apo's, but I've done a few head to heads between Mitutoyo objectives and Chinese clones. Mitutoyo isn't one of the traditional big four but they're the big dog in their niche of long working distsnce metallurgical objectives (to the point Nikon has copied their standard for...
- Thu Jan 18, 2024 9:28 am
- Forum: Microscopes and optics
- Topic: What brand of traditional objectives do Chinese objectives mimic?
- Replies: 10
- Views: 1169
Re: What brand of traditional objectives do Chinese objectives mimic?
I think for something to qualify as a 'Zeiss knockoff' it would need to copy an optical system that Zeiss developed, not just be another company whiteboxing from the same optical pool. I guess some do attempt to look like the Primostar line which kind of counts though.
- Thu Jan 18, 2024 7:24 am
- Forum: Microscopes and optics
- Topic: What brand of traditional objectives do Chinese objectives mimic?
- Replies: 10
- Views: 1169
Re: What brand of traditional objectives do Chinese objectives mimic?
That's a Zeiss-branded Chinese Olympus knockoff though. It iwn't related to any of Zeiss's other in house systems.
- Wed Jan 17, 2024 10:29 am
- Forum: Beginner's corner
- Topic: Swift SW380B objective lenses problem
- Replies: 9
- Views: 1129
Re: Swift SW380B objective lenses problem
I bet your new one is a short barrel. I have one that looks identical which is this way, if so it wants to it a lot lower than your other objectives. Mine also performs very badly.
- Wed Jan 10, 2024 7:41 pm
- Forum: Beginner's corner
- Topic: How to select lighting? [SMZ-U]
- Replies: 5
- Views: 2663
Re: How to select lighting? [SMZ-U]
Yes, the working distance range is part of the spec, though chinese suppliers don't always provide that information.
A good alternstive is a dual gooseneck 100w halogen illuminator or modern LED equivalent. The poseable arms are nice for directing light where it's needed.
A good alternstive is a dual gooseneck 100w halogen illuminator or modern LED equivalent. The poseable arms are nice for directing light where it's needed.
- Wed Jan 10, 2024 5:48 am
- Forum: Illumination Techniques
- Topic: Brightfield cube in U-RFAA (Olympus), compatible with DICR?
- Replies: 3
- Views: 5386
Re: Brightfield cube in U-RFAA (Olympus), compatible with DICR?
But to follow up on the last point you'll likely get acceptable to good results with a wider variety of objectives than you'd expect.
- Mon Jan 08, 2024 5:07 pm
- Forum: Camera systems and imaging
- Topic: Camera sensor size to see bigger F.O.V.
- Replies: 10
- Views: 10374
Re: Camera sensor size to see bigger F.O.V.
Mu purpose is seeing bigger field of view. For example when scanning 15mmx15mm area, I have to take 650 photos (0.75mm x 0.55 mm). If I see bigger area for example (like 0.85mm x 0.75mm) I need less image and as a result less time to scan a tissue Of course, but if you're stitching the edge/corner ...
- Mon Jan 08, 2024 3:10 am
- Forum: Beginner's corner
- Topic: SMZ-U why multiple ports?
- Replies: 3
- Views: 5886
Re: SMZ-U why multiple ports?
Back in the day film type was a major consideration as well. Having two cameras would allow you to have multiple options on that front. Having access to the infinity image on the aide port allows for adapters using shorter or longer tube lenses rather than a tube lens plus a reducing or expanding le...
- Sun Jan 07, 2024 7:19 pm
- Forum: Camera systems and imaging
- Topic: Camera sensor size to see bigger F.O.V.
- Replies: 10
- Views: 10374
Re: Camera sensor size to see bigger F.O.V.
I don't know what your exact needs are. There may be vignetting from the 0.35x adapter (most likely) or from the objective. Direct projection onto full frame with a suitablr tube lens might have better odds of success (since you'd not have any reducing optics in the light path) but you'll definitely...
- Sat Jan 06, 2024 6:21 pm
- Forum: Camera systems and imaging
- Topic: Camera sensor size to see bigger F.O.V.
- Replies: 10
- Views: 10374
Re: Camera sensor size to see bigger F.O.V.
That'd be asking for a 37mm field number from your objective (13mm sensor diagonal * 1/0.35). The adapter may not even project an image big enough to cover a sensor that size. There's a chance your objective will cover it though, some Olympus objectives can cover full frame sensors with direct proje...
- Sat Jan 06, 2024 10:34 am
- Forum: Pictures and Videos
- Topic: Advices to improve my pictures
- Replies: 11
- Views: 7762
Re: Advices to improve my pictures
Great job! I would not mess with cleaning, your photos aren't showing major signs of lowered contrast which is what you'd expect from dirty elements. I'd say your equipment is dialled in well enough--now the fun bit, finding subjects and fine tuning your lighting and editing skills.
- Tue Jan 02, 2024 7:57 pm
- Forum: Beginner's corner
- Topic: What is the diference beetween a Splan Apo and Neo Splan NIC??
- Replies: 8
- Views: 6028
Re: What is the diference beetween a Splan Apo and Neo Splan NIC??
The neo splans are meant for looking at opaque subjects with nothing transparent on top of them. That matters less at lower magnifications, but at higher magnifications you will get bad results looking at pond life. In terms of optical quality, when set up with the correct optics (an extra lens is n...
- Thu Dec 28, 2023 8:16 pm
- Forum: Microscopes and optics
- Topic: Usin Mitutoyo objective on Olympus BHMJ
- Replies: 7
- Views: 2512
Re: Usin Mitutoyo objective on Olympus BHMJ
https://www.ebay.com/itm/273482756677
Note IXm assuming you don't have an ultrawide head.
Note IXm assuming you don't have an ultrawide head.
- Thu Dec 28, 2023 1:29 am
- Forum: Beginner's corner
- Topic: Nikon SMZ-U: How to clean Zoom Body
- Replies: 2
- Views: 1613
Re: Nikon SMZ-U: How to clean Zoom Body
You have to pull the rubber caps off the knobs, loosen the set screw this reveals, removd the knobs and then you can remove the bolts holding the shell on. The shell is split down the middle and each half can be slipped off with the knobs and bolts removed. The zoom body has teo independent light pa...
- Thu Dec 28, 2023 1:26 am
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 115427
Re: Dichromatic Illumination?
Why use PWM rather than a constant current driver? So I can alter the degree of chromicity between the two coloured LEDs; offering a variable colour selection between the two without altering the degree of required illumination. I'd think you could do the same with constant current since they can v...
- Wed Dec 27, 2023 7:21 pm
- Forum: Home-made microscope adaptations
- Topic: Dichromatic Illumination?
- Replies: 61
- Views: 115427
Re: Dichromatic Illumination?
Why use PWM rather than a constant current driver?
- Sat Dec 23, 2023 5:39 am
- Forum: Microscopes and optics
- Topic: Bausch & Lomb 240 aerial survey/photogrammetry zoom scope?
- Replies: 4
- Views: 3535
Re: Bausch & Lomb 240 aerial survey/photogrammetry zoom scope?
The 500 is neat. I got one cheap but it's so bulky and specific that I have not actually set it up. The higher mag objectives are also very short wd.
- Sat Dec 23, 2023 12:01 am
- Forum: Beginner's corner
- Topic: seeing double images
- Replies: 10
- Views: 4097
Re: seeing double images
Sometimes you get a slightly different field of view in each eyepiece l, which naturally doesn't line up. In others the fov might be the same in each and everything theoretically fine but converging them is still difficult or uncomfortable. Don't ask me why but this will likely vary from head to hea...
- Thu Dec 21, 2023 4:29 am
- Forum: Microscopes and optics
- Topic: Thinking about buying a Neophot 21, need information about it
- Replies: 9
- Views: 5996
Re: Thinking about buying a Neophot 21, need information about it
Yes. That type of knurling is an especially common touch on metallurgical objectives.
The -C means it requires compensating optics (tube lens/eyepieces not sure which), unlike -A marked objectives.
The -C means it requires compensating optics (tube lens/eyepieces not sure which), unlike -A marked objectives.
- Thu Dec 21, 2023 3:58 am
- Forum: Microscopes and optics
- Topic: Epistar microscopes
- Replies: 14
- Views: 8377
Re: Epistar microscopes
If you want best performance these aren't the best approach. You'll need to use a single die emitter on a heat sink positioned about where the halogen filament was. It is a lot more involved though.
- Wed Dec 20, 2023 5:36 pm
- Forum: Microscopes and optics
- Topic: Thoughts on these microscopes for sale on Facebook appreciated
- Replies: 7
- Views: 7669
Re: Thoughts on these microscopes for sale on Facebook appreciated
Ooooh good eye! Buy buy buy buy buy
- Wed Dec 20, 2023 4:50 pm
- Forum: Microscopes and optics
- Topic: Thoughts on these microscopes for sale on Facebook appreciated
- Replies: 7
- Views: 7669
Re: Thoughts on these microscopes for sale on Facebook appreciated
That's a hoffman modulation contrast condenser, not DIC. Not sure how popular they are.
- Mon Dec 18, 2023 8:07 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: FS Carl Zeiss slit lamp marked 14908 &14941
- Replies: 3
- Views: 2423
Re: FS Carl Zeiss boom stereo marked 14908 &14941
Looks like a slit lamp.