Search found 447 matches

by Scarodactyl
Sat Dec 14, 2019 7:15 pm
Forum: Beginner's corner
Topic: Does a DSLR adapter need a lens in it?
Replies: 4
Views: 75

Re: Does a DSLR adapter need a lens in it?

The trinoc port has a 23mm opeing at the top, so it is basically a third ocular. If you stick an eyepiece in there it will work like the other two (not all of them are set up quite like this, but they tend to be. You can test by trying one of your oculars in it and seeing it it produces a focused im...
by Scarodactyl
Sat Dec 14, 2019 5:07 pm
Forum: For forum members who want to buy and sell equipment
Topic: Stereo Darkfield Condensers and LED ring lights (stocking stuffers?)
Replies: 3
Views: 124

Re: Stereo Darkfield Condensers and LED ring lights (stocking stuffers?)

That might work, but I think they would need a fair bit of separation to get enough light in, and at that point you can get darkfield from the ring light alone (which you could improve with a baffle, and even add switchable brightfield with an insertable frosted plate.
by Scarodactyl
Fri Dec 13, 2019 11:07 pm
Forum: Beginner's corner
Topic: Does a DSLR adapter need a lens in it?
Replies: 4
Views: 75

Re: Does a DSLR adapter need a lens in it?

One with no lenses will produce an image, but it won't fill the sensor and will require a lot of refocusing. The parfocal image is right about where the bottom of the eyepiece would sit. This is inconvenient and also pushes the optics out of spec so quality will suffer. The generic 2x adapters are o...
by Scarodactyl
Mon Dec 09, 2019 5:21 am
Forum: Microscopes and optics
Topic: Zeiss and Gem Scopes
Replies: 6
Views: 126

Re: Zeiss and Gem Scopes

What are you planning on using it for? Depending on your budget you might want to consider a horizontal immersion scope. I have not tried one myself but the people I know who have them like them quite a bit for looking at inclusions. Depending on your budget you might be able to do better by picking...
by Scarodactyl
Mon Dec 09, 2019 1:57 am
Forum: Microscopes and optics
Topic: Zeiss and Gem Scopes
Replies: 6
Views: 126

Re: Zeiss and Gem Scopes

None of the big four make gemscopes themselves. Olympus did for a brief period back in the 60s, but that market has always been dominated by specialty sellers like Gem Instruments (part of the GIA now). Meiji does, and they have a great reputation for build quality, though you have to be sure you ge...
by Scarodactyl
Sun Dec 08, 2019 9:51 pm
Forum: For forum members who want to buy and sell equipment
Topic: Stereo Darkfield Condensers and LED ring lights (stocking stuffers?)
Replies: 3
Views: 124

Stereo Darkfield Condensers and LED ring lights (stocking stuffers?)

A while back I got kind of overexcited and bought a big lot of these darkfield condensers and LED ring lights. I have a ton of them (all new in box), and while they are certainly useful I don't need this many. So I am selling a few of these off to get closet space back. https://i.imgur.com/XWan0rA.p...
by Scarodactyl
Sun Dec 08, 2019 12:28 am
Forum: Microscopes and optics
Topic: Neural lens paper
Replies: 1
Views: 97

Re: Neural lens paper

Another great trick for enhanced resolution: upsize the images and draw more details onto them. It is a cool trick but I don't think it is a good idea to treat 'filling in missing information with a plausible guess' as a useful technique. Results are a lot more visually pleasing than the original im...
by Scarodactyl
Sat Dec 07, 2019 3:14 am
Forum: For forum members who want to buy and sell equipment
Topic: AO 575 barlow lens
Replies: 7
Views: 293

Re: AO 575 barlow lens

Sorry for the slow reply. I think eBay will end up being easiest since you don't have PMs yet. I listed it here, just make an offer of 50 and I will accept it
https://rover.ebay.com/rover/0/0/0?mpre ... 3977692116
by Scarodactyl
Fri Dec 06, 2019 6:18 am
Forum: My microscope
Topic: Just finished: tricked out cycloptic gemscope
Replies: 3
Views: 164

Re: Just finished: tricked out cycloptic gemscope

Absolutely. I did have to assemble it from a couple working ones (one broken head, two broken click-stop spring mechanisms) but it is clearly very well-built and the optics are nice. I'm still working on hooking up a camera--since the standard 2x Chinese dslr adapter seemed to work well on the B&L s...
by Scarodactyl
Thu Dec 05, 2019 10:45 pm
Forum: Microscopes and optics
Topic: Zeiss Eyepieces - anyone have any info please?
Replies: 6
Views: 111

Re: Zeiss Eyepieces - anyone have any info please?

That's not too surprising. Any compound modern enough to have 30mm eyepieces is not doing any corrections in the eyepieces. At least on stereos compativility is pretty broad, though not totally universal (it will always produce a good image but sometimes you can't get them positioned to be parfocal).
by Scarodactyl
Thu Dec 05, 2019 9:54 pm
Forum: Microscopes and optics
Topic: Zeiss Eyepieces - anyone have any info please?
Replies: 6
Views: 111

Re: Zeiss Eyepieces - anyone have any info please?

The three two-digit numbers are the part number, which I have found to be almost completely useless for finding information online. Zeiss is awful about that relative to eg Leica. Presumably they switched over to longer part numbers at some point between when the two eyepieces were made? I am guessi...
by Scarodactyl
Thu Dec 05, 2019 5:43 pm
Forum: Microscopes and optics
Topic: Zeiss Eyepieces - anyone have any info please?
Replies: 6
Views: 111

Re: Zeiss Eyepieces - anyone have any info please?

These are stereo eyepieces for their stemi series. They made a lot of stemis over a long period so a change in styles at some point makes sense.
by Scarodactyl
Thu Dec 05, 2019 6:55 am
Forum: My microscope
Topic: Just finished: tricked out cycloptic gemscope
Replies: 3
Views: 164

Just finished: tricked out cycloptic gemscope

https://i.imgur.com/MzgnqLr.jpg Here's a project I've been meaning to finish for a while. I got a vi tage 'jewelscope', an apparently japanese copy of the GIA gemolite (the original, not the later Gemolite V). It might be virtually unknown today, but the jewelscope is extremely well built and has a...
by Scarodactyl
Mon Dec 02, 2019 7:14 pm
Forum: Camera systems and imaging
Topic: Microscope adapter for Casio EX-Z85
Replies: 5
Views: 121

Re: Microscope adapter for Casio EX-Z85

The bands are from the 60hz ac current interacting with your camera's sampling. Not really something wrong with your camera per se. You can see the same with a cell phone camera and a halogen lamp.
by Scarodactyl
Sun Dec 01, 2019 6:58 pm
Forum: Camera systems and imaging
Topic: Microscope adapter for Casio EX-Z85
Replies: 5
Views: 121

Re: Microscope adapter for Casio EX-Z85

The EX-Z85 has a non-interchangeable zoom lens, so your only option is probably an afocal setup, with the camera suspended over a viewing eyepiece and focused to infinity. You may or may not be able to get a good, non-vignetted image that way. Fortunately it should be easy to test by holding it over...
by Scarodactyl
Sat Nov 30, 2019 3:24 am
Forum: Microscopes and optics
Topic: Microscope for my wife?
Replies: 10
Views: 246

Re: Microscope for my wife?

You'll definitely want to get a trinocular microscope if photography is the main goal. It does sound like a standard biological setup is what she's after, though the more you know about what she wants to photograph the better an idea we can get of what you'll need. At 500-1k you should be able to ge...
by Scarodactyl
Sat Nov 30, 2019 12:55 am
Forum: For forum members who want to buy and sell equipment
Topic: AO 575 barlow lens
Replies: 7
Views: 293

Re: AO 575 barlow lens

Hello. I think I sent a PM with pictures. I will double check and resend if it didn't go through. edit: whoops, looks like you can't receive them yet. I'll post the pictures here (click for full size): https://i.imgur.com/tJdYglPl.jpg https://i.imgur.com/CJ0j3vql.jpg Condition is good but not comple...
by Scarodactyl
Fri Nov 29, 2019 8:38 pm
Forum: Microscopes and optics
Topic: Microscope for my wife?
Replies: 10
Views: 246

Re: Microscope for my wife?

Do you have an idea of your budget, and of the size of subjects she will want to photograph? If her workflow will involve painting the image she may not need tip top resolution since it will be her interpretation of the image anyway.
by Scarodactyl
Fri Nov 29, 2019 3:05 am
Forum: For forum members who want to buy and sell equipment
Topic: Wild M400/M420 Frankenmacroscope 900usd free US shipping
Replies: 1
Views: 1202

Re: Wild M400/M420 Frankenmacroscope 900usd free US shipping

It's almost black friday, and I'd like to clear some room for my next project (though it probably won't be another one of these for some time--how often to Nikon infinity-corrected heads with an erect image come up affordably priced??) Price marked down to 900 if anyone is interested.
by Scarodactyl
Thu Nov 28, 2019 7:07 pm
Forum: Microscopy accessories
Topic: German Gipsplatte
Replies: 5
Views: 251

Re: German Gipsplatte

Gips=gypsum. Drywall is made of gypsum, but so are gypsum accessory plates.
by Scarodactyl
Wed Nov 27, 2019 11:08 pm
Forum: Camera systems and imaging
Topic: Help attaching full frame DSLR to Olympus BX40
Replies: 19
Views: 510

Re: Help attaching full frame DSLR to Olympus BX40

Bless those institutions--their overspending enables our surplus buying. One could try probably 5 different methods with used equipment and still have money left over relative to buying the DI setup new. Unfortunately more recent Spot/DI adapters are not as easy to come across used for cheap right n...
by Scarodactyl
Wed Nov 27, 2019 10:03 pm
Forum: Camera systems and imaging
Topic: Help attaching full frame DSLR to Olympus BX40
Replies: 19
Views: 510

Re: Help attaching full frame DSLR to Olympus BX40

But spot imaging (or diagnostic instruments) will have done reasonable testing and something you get from them should yield at least acceptable results. But it does come at quite a price. Given those prices ($650 and up) - acceptable does not seem to me to be acceptable. Agreed, and it's likely it'...
by Scarodactyl
Wed Nov 27, 2019 10:01 pm
Forum: My microscope
Topic: My first Stereo
Replies: 3
Views: 150

Re: My first Stereo

It's a lot easier to get non-zooming optics right, so at a low price point you can often still get a great, crisp image if you go for this style of scope. I was just trying a similar scope at my local microscope dealer's shop and was pretty impressed. I hope you enjoy it!
by Scarodactyl
Wed Nov 27, 2019 6:44 pm
Forum: Camera systems and imaging
Topic: Help attaching full frame DSLR to Olympus BX40
Replies: 19
Views: 510

Re: Help attaching full frame DSLR to Olympus BX40

And worse yet, in at least some cases '1x' seems to be defined relative to what they recommend for a 1" sensor (which is going to be in the same broad ballpark given the usual intermediate image size but not the same). Those generic 2x dslr adapters prove the broad nonuniversality point really well....
by Scarodactyl
Tue Nov 26, 2019 4:59 am
Forum: My microscope
Topic: Manufacturer of this petrographic scope?
Replies: 7
Views: 1334

Re: Manufacturer of this petrographic scope?

Unitron used to mostly resell Kyowa stuff, which would track with it being a quality-but-obscure Japanese-made scope. I've tried a couple of Kyowa products and been pretty happy with them.
by Scarodactyl
Mon Nov 25, 2019 8:25 pm
Forum: For forum members who want to buy and sell equipment
Topic: AO 575 barlow lens
Replies: 7
Views: 293

Re: AO 575 barlow lens

Sounds great. It needs a bit of cleaning, but I'll get it spiffed up and send some pictures via pm.
by Scarodactyl
Mon Nov 25, 2019 4:13 am
Forum: For forum members who want to buy and sell equipment
Topic: AO 575 barlow lens
Replies: 7
Views: 293

Re: AO 575 barlow lens

I have an original AO 0.5x lens I am willing to part with. Make me an offer.
by Scarodactyl
Sat Nov 23, 2019 7:05 am
Forum: Camera systems and imaging
Topic: How to attach camera to Olympus BH2?
Replies: 19
Views: 3524

Re: How to attach camera to Olympus BH2?

Changing the position of the nfk projective is likely going to have some sort of optical consequence--raising it certainly does anyway.
by Scarodactyl
Fri Nov 22, 2019 3:08 pm
Forum: Microscopes and optics
Topic: Moisture condensation in stereomicroscope
Replies: 7
Views: 213

Re: Moisture condensation in stereomicroscope

Microscopes need to be kept in temperature and humidity controlled environments. Presumably there are temperature swings making it condense moisture, which is obviously not great.
by Scarodactyl
Fri Nov 22, 2019 12:41 pm
Forum: Camera systems and imaging
Topic: Help attaching full frame DSLR to Olympus BX40
Replies: 19
Views: 510

Re: Help attaching full frame DSLR to Olympus BX40

beemer wrote:
Fri Nov 22, 2019 8:56 am
Also, I stumbled upon this option.
The spot/diagnostic instruments adapters are quite well made, and since this is a non compensating eyepiece it's replacing it should give good results.