Search found 762 matches

by Scarodactyl
Tue Apr 21, 2020 7:23 am
Forum: Microscopy accessories
Topic: 25M female to RMS male
Replies: 6
Views: 499

Re: 25M female to RMS male

https://www.ebay.com/itm/370336094721
This guy is in Washington.
by Scarodactyl
Tue Apr 21, 2020 6:55 am
Forum: For forum members who want to buy and sell equipment
Topic: Found: Leitz K4 condenser lens (Can a mod please move this to the equipment discussion? Thanks!)
Replies: 34
Views: 1707

Re: WTB: Leitz K4 condenser lens

Images hosted on google seem to behave weirdly. I can't see them either.
by Scarodactyl
Mon Apr 20, 2020 10:50 pm
Forum: Microscopy accessories
Topic: 25M female to RMS male
Replies: 6
Views: 499

Re: 25M female to RMS male

Huh. I am in the US and overseas packages are coming as usual, there doesn't even seem to be an unusual delay.
by Scarodactyl
Mon Apr 20, 2020 8:46 pm
Forum: Camera systems and imaging
Topic: Maybe a way to get the perfect image with a DSLR?
Replies: 26
Views: 1114

Re: Maybe a way to get the perfect image with a DSLR?

If you don't have access to 3d printing or local machining RAFcamera provides a great service, both with unusual off-the-shelf adapters and custom made ones for quite reasonable prices. Shipping isn't even that slow given things are coming from Russia.
by Scarodactyl
Mon Apr 20, 2020 6:11 pm
Forum: For forum members who want to buy and sell equipment
Topic: SOLD Bausch and Lomb Microzoom II with 5 objectives 600 obo, super long working distance upright image
Replies: 7
Views: 2079

Re: SOLD Bausch and Lomb Microzoom II with 5 objectives 600 obo, super long working distance upright image

In retrospect I was expecting too much from non-apo optics, and worse, the samples I chose for testing were very unflattering. The buyer was quite happy with it and it has apparently been getting good use on microfossils. I think poor man's mitutoyo wouldn't be inaccurate. The finescope series was l...
by Scarodactyl
Mon Apr 20, 2020 6:03 pm
Forum: Camera systems and imaging
Topic: Maybe a way to get the perfect image with a DSLR?
Replies: 26
Views: 1114

Re: Maybe a way to get the perfect image with a DSLR?

To be more explicit, my microscope is an Optika IM-3: https://www.optikamicroscopes.com/optikamicroscopes/product/im-3/ and in order to take pictures from a DSLR the following accessories are available: an extension tube https://www.optikamicroscopes.com/optikamicroscopes/product/m-699/ and an opti...
by Scarodactyl
Mon Apr 20, 2020 5:53 pm
Forum: Beginner's corner
Topic: Imaging with different coverglass thickness
Replies: 18
Views: 821

Re: Imaging with different coverglass thickness

I helped set up a camera on a microscope on a friend's academic lab. Their sccopes were old leitzes, and that one had a leitz objective, a wild, an olympus, a zeiss and a nikon. Not exactly on purpose, just from inherited equipment that was likely bodged together over time. Similar issues with their...
by Scarodactyl
Sun Apr 19, 2020 11:11 pm
Forum: Beginner's corner
Topic: Also Needing Microscope Purchase Advice
Replies: 35
Views: 1673

Re: Also Needing Microscope Purchase Advice

That is a phase condenser. It also has a darkfield stop on the roulette. Not sure about thr objectives. It also has an unrelated trinoc head and some adapters, one of which looks like a diagnostic instruments slr adapter which would be handy. If not thr afx adapter can be retrofitted for a dslr easi...
by Scarodactyl
Sun Apr 19, 2020 11:01 pm
Forum: Camera systems and imaging
Topic: Maybe a way to get the perfect image with a DSLR?
Replies: 26
Views: 1114

Re: Maybe a way to get the perfect image with a DSLR?

Most systems will direct project onto aps-c with no trouble, no telecoverter needed unless you want to cover full frame. In systems where this is possible (no additional corrections needed, bit enough image circle--ie nikons, almost all stereo systems, probably most modern infinity systems) it is pr...
by Scarodactyl
Sun Apr 19, 2020 10:54 pm
Forum: Beginner's corner
Topic: Also Needing Microscope Purchase Advice
Replies: 35
Views: 1673

Re: Also Needing Microscope Purchase Advice

If something on eBay is listed as used (ie, not 'for parts') it has to arrive in working condition. If not the seller can be forced by eBay to accept a return on their own dime if they are unwilling to do so on their own. It might be more of a pain if they try to cause a fuss but I have never had a ...
by Scarodactyl
Sun Apr 19, 2020 9:35 pm
Forum: Beginner's corner
Topic: Also Needing Microscope Purchase Advice
Replies: 35
Views: 1673

Re: Also Needing Microscope Purchase Advice

Wouldn't that not even really be an upgrade though? How much better would that things images be? As opposed to an amscope? Yes, it will likely be significantly better than an amscope, cheaper and more expandable. He linked a few alphaphots in his first post, which are the student tier member of tha...
by Scarodactyl
Sun Apr 19, 2020 8:49 pm
Forum: Beginner's corner
Topic: Also Needing Microscope Purchase Advice
Replies: 35
Views: 1673

Re: Also Needing Microscope Purchase Advice

800 should buy something nice in nikon or olympus 160 finite era if you spend some time trawling eBay.
Just as a random example this one might be a good starting point https://www.ebay.com/itm/233373357867
by Scarodactyl
Sat Apr 18, 2020 10:32 pm
Forum: Microscopes and optics
Topic: 40x SPlan woes
Replies: 53
Views: 3835

Re: 40x SPlan woes

The mtv lens is a reducing optic. It is an essential part of that adapter for using small sensor cameras. If you remove it you've turned a valuable and useful adapter into a simple dovetail adapter. If I were you I'd bust out the acetone, remove the superglue, reassemble the mtv. Sell that adapter t...
by Scarodactyl
Sat Apr 18, 2020 12:57 am
Forum: Microscopes and optics
Topic: PLANAPO eyepieces
Replies: 7
Views: 385

Re: PLANAPO eyepieces

Yeah, zeiss infinity optics won't give the best results on a non-zeiss head, same with Leica objectives. It may not be that big an effect but a high end Leica or Zeiss objective is likely to be so expensive that you could get a better matching objective for cheaper. Nikon an Olympus aren't 100% comp...
by Scarodactyl
Fri Apr 17, 2020 11:49 pm
Forum: Microscopes and optics
Topic: PLANAPO eyepieces
Replies: 7
Views: 385

Re: PLANAPO eyepieces

It varies from brand to brand. I think that Chinese ones tend to be non-compensating. Olympus and nikon are noncompensating, zeissx leica, ao/reichert are comlensating. Not sure about Meiji.
by Scarodactyl
Fri Apr 17, 2020 9:59 pm
Forum: Camera systems and imaging
Topic: Help/Thoughts on camera setup
Replies: 2
Views: 344

Re: Help/Thoughts on camera setup

Hey, sorry I forgot to respond to your PM about this, but fortunately the answer is simple. https://www.ebay.com/itm/Olympus-OM-Lens-to-Canon-EOS-EF-Camera-mount-adapter-70D-60D-T6i-5D-III/382412425460 this one works just fine. You have all the right hardware. The 2.5x projects an image that's well-...
by Scarodactyl
Fri Apr 17, 2020 9:49 pm
Forum: Microscopes and optics
Topic: PLANAPO eyepieces
Replies: 7
Views: 385

Re: PLANAPO eyepieces

They came out of an obsolete gene sequencer. They should definitely be much, much more expensive, but the supply is pretty high right now. They're the best deal in optics right now--perfect color correction, high resolution, strain free, just nice. Just make sure you're using it on an infinity-corre...
by Scarodactyl
Fri Apr 17, 2020 8:11 pm
Forum: Microscopes and optics
Topic: LOMO as a brand
Replies: 25
Views: 996

Re: LOMO as a brand

Thank you for sharing that! I have been curious about Lomo for a while, but not curious enough to buy on (aside from the aforementioned excellent 3.7x objective). I was searching for something else (an urban legend about a model of microscope that was exported from the soviet union solely for the sc...
by Scarodactyl
Fri Apr 17, 2020 8:04 pm
Forum: Microscopes and optics
Topic: PLANAPO eyepieces
Replies: 7
Views: 385

Re: PLANAPO eyepieces

It depends on the era. Nikon was ahead of the curve--in the labophot era they introduced the "CF" series objectives, with all corrections done internally, requiring no eyepiece corrections. This carried over to their infinity-corrected CFI series. If you have an older one it will need eyepiece corre...
by Scarodactyl
Fri Apr 17, 2020 8:39 am
Forum: Pictures and Videos
Topic: First shots with DSLR, first shots stacking
Replies: 7
Views: 366

Re: First shots with DSLR, first shots stacking

I think what you have been sold as a dslr adapter is actually a reducing adapter designed for a c mount camera with a further c-mount to eos adapter screwed on (and the price more than tripled.) If so this adapter is meant for a camera with a small sensor and with a small flange focal distance (dist...
by Scarodactyl
Fri Apr 17, 2020 8:24 am
Forum: Camera systems and imaging
Topic: What DSLR settings do you use?
Replies: 5
Views: 420

Re: What DSLR settings do you use?

That is an odd adapter to be using. Typically a reducing adapter is used to smush the image back down to small enough for a tiny sensor c mount camera (a 1/2" typically with a .5x lens), not for a dslr with an aps-c camera. Does it give you a lot of vignetting? As to settings, on my t6 I have it kn ...
by Scarodactyl
Thu Apr 16, 2020 10:31 pm
Forum: Microscopes and optics
Topic: Anyone familiar with a Steindorff Microscope?
Replies: 5
Views: 274

Re: Anyone familiar with a Steindorff Microscope?

Ah, but they did make the Microbe Hunter

Image
One heck of a nice-looking scope, optics aside.
by Scarodactyl
Thu Apr 16, 2020 10:03 pm
Forum: Beginner's corner
Topic: PLAN APO vs APO
Replies: 8
Views: 514

Re: PLAN APO vs APO

It's not super common to find modern non-plan apo objectives. There are modern stereos that are just labeled just 'apo' so planarity might not be a guarantee, but these were greenough units (leica and zeiss) so perfect planarity might jot be expected anyway, that's not what you'd want it for. For a ...
by Scarodactyl
Thu Apr 16, 2020 6:21 pm
Forum: Microscopes and optics
Topic: Anyone familiar with a Steindorff Microscope?
Replies: 5
Views: 274

Re: Anyone familiar with a Steindorff Microscope?

I'd guess a Chinese-made scope broadly modeled on an Olynpus BH2. Steindorff was once a serious brand a long time back. It looks like the name has also been used to sell the same Chinese scopes you'll see for sale from any smalltime dealer. Qualitywise it's probably just ok, not a toy but inferior o...
by Scarodactyl
Thu Apr 16, 2020 5:56 pm
Forum: Beginner's corner
Topic: Numerical Aperature 40x
Replies: 3
Views: 324

Re: Numerical Aperature 40x

Of course when you get into industrial dry long working distance objectives you can spend an awful lot for a very thoroughly engineered objective with a much lower NA. But you are unlikely to end up with one of these without knowing what you're getting and exactly what you want to use it for.
by Scarodactyl
Thu Apr 16, 2020 5:31 am
Forum: Microscopes and optics
Topic: LOMO as a brand
Replies: 25
Views: 996

Re: LOMO as a brand

Their reputation varies a lot depending on who you ask. Built like tanks? Prone to breaking? Good optics? Bad optics? There's a range of reactions and likely a range of quality levels. It also suggests to me that QC might not have been the best. They made (make?) a 3.7x objective that is very well-l...
by Scarodactyl
Wed Apr 15, 2020 9:53 pm
Forum: My microscope
Topic: The Myth of the Digital Microscope
Replies: 10
Views: 616

Re: The Myth of the Digital Microscope

It's certainly not an honest or useful way to present magnification.
by Scarodactyl
Wed Apr 15, 2020 8:37 pm
Forum: Illumination Techniques
Topic: Soviet Plot revealed !!
Replies: 25
Views: 930

Re: Soviet Plot revealed !!

I wonder if this might be an instance of someone copying a design without fully understanding it.
by Scarodactyl
Wed Apr 15, 2020 6:50 pm
Forum: My microscope
Topic: The Myth of the Digital Microscope
Replies: 10
Views: 616

Re: The Myth of the Digital Microscope

There are a wide range of digital scopes available, ranging from 10-20 bucks to 10-20k+ bucks. But they do tend to aim somewhat low on resolution--even something like the Leica DVM6 only has a 10mp camera integrated, so it's hard to imagine some corners aren't cut since you can't get more than that ...