Search found 2775 matches

by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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 ...
by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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 ...
by Scarodactyl
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.
by Scarodactyl
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...
by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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 ...
by Scarodactyl
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...
by Scarodactyl
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...
by Scarodactyl
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...
by Scarodactyl
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.
by Scarodactyl
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...
by Scarodactyl
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.
by Scarodactyl
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...
by Scarodactyl
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...
by Scarodactyl
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?
by Scarodactyl
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.
by Scarodactyl
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...
by Scarodactyl
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.
by Scarodactyl
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.
by Scarodactyl
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.