Search found 1502 matches

by PeteM
Mon Mar 01, 2021 7:20 am
Forum: Beginner's corner
Topic: Compound Microscope for Gross Anatomy Observation?
Replies: 23
Views: 333

Re: Compound Microscope for Gross Anatomy Observation?

It looks like the Ebay Motics are phase contrast and with plan phase objectives. Those scopes should be a distinct step up from the Swift scopes, lacking only the trinocular head. My view used to be that documentation was such an important (and fun) part of microscopy that most everyone should get a...
by PeteM
Mon Mar 01, 2021 7:06 am
Forum: Microscopes and optics
Topic: Nikon SMZ vs Chinese Copy in a battle of the titans
Replies: 3
Views: 108

Re: Nikon SMZ vs Chinese Copy in a battle of the titans

Thank you for that excellent review.
by PeteM
Mon Mar 01, 2021 4:00 am
Forum: My microscope
Topic: Nikon Binocular
Replies: 5
Views: 128

Re: Nikon Binocular

Just realize that you face a couple issues using this for slides. First, there is no light source and condenser for below the stage. You could do something like a LED headlight and maybe use it up to around 100 or possibly 200x without a condenser. But it won't have the best resolution. Second, the ...
by PeteM
Sun Feb 28, 2021 7:26 pm
Forum: Microscopes and optics
Topic: Nikon -S and -Phot stages
Replies: 2
Views: 40

Re: Nikon -S and -Phot stages

Pretty sure the compatibility is only between Labophot and Optiphot. Perhaps with significant machining effort you could get the old stage to fit and still have the condenser top sit high enough toward the stage top? The S series did have one other (besides the polarization one you're looking at) fa...
by PeteM
Sun Feb 28, 2021 5:57 pm
Forum: My microscope
Topic: Nikon Binocular
Replies: 5
Views: 128

Re: Nikon Binocular

One of the first things you might want to check is the fine focus gear. These were plastic and now often split with age and mishandling. Sometimes the fine focus will sort of work with a rough spot at the split. Sometimes it won't smoothly raise and lower the stage. A replacement gear is now hard to...
by PeteM
Sun Feb 28, 2021 5:48 pm
Forum: Camera systems and imaging
Topic: Significance of Difference between No-Name DSLR Adapters?
Replies: 8
Views: 190

Re: Significance of Difference between No-Name DSLR Adapters?

The 2x adapters with the iris might be handy - perhaps allowing better images - but I have no direct experience. One would think field and aperture iris settings in the microscope might be enough - but performance of the 2x relay lens in these these drops off enough at the edges it might be handy. I...
by PeteM
Sun Feb 28, 2021 4:40 am
Forum: Introduce yourself
Topic: New here
Replies: 2
Views: 65

Re: New here

Welcome.
by PeteM
Fri Feb 26, 2021 6:49 pm
Forum: My microscope
Topic: Leica / Reichert Jung Polyvar Microscope Illuminator Plug Type
Replies: 9
Views: 173

Re: Leica / Reichert Jung Polyvar Microscope Illuminator Plug Type

For the time and cost involved in finding an exact replacement - maybe just replace an entire pair capable of handling at least 10 amps? Female panel mount into the scope. Male plug on the illuminator end.
by PeteM
Fri Feb 26, 2021 3:00 am
Forum: Microscopes and optics
Topic: Anyone know how to fix this?
Replies: 5
Views: 155

Re: Anyone know how to fix this?

As you suggest, the easiest thing will be to find another stage or even a parts Zeiss on Ebay. Likely under $100. Recollection is that a tiny pin spanner attaches a threaded end of the rod. Try unscrewing it and then pushing/pin punching it out. Were I in a masochistic or ornery frame of mind - I mi...
by PeteM
Thu Feb 25, 2021 10:42 pm
Forum: Pictures and Videos
Topic: Pleurosigma and friend
Replies: 12
Views: 185

Re: Pleurosigma and friend

That brought a grin. Very cool image.
by PeteM
Wed Feb 24, 2021 10:29 pm
Forum: Microscopes and optics
Topic: Hey Apo, you ever seen one like this? (B&L Phase lens with no phase ring?)
Replies: 6
Views: 123

Re: Hey Apo, you ever seen one like this? (B&L Phase lens with no phase ring?)

Could be due to its age? You've heard the saying: "It's just a phase - he'll/she'll grow out of it."

OK - no idea. Phil might know - for some low power objectives the phase ring is at the back aperture of the objective and can be removed. Don't know if the B&L you have is like this.
by PeteM
Wed Feb 24, 2021 6:18 am
Forum: Camera systems and imaging
Topic: Are photo eyepieces needed?
Replies: 23
Views: 2090

Re: Are photo eyepieces needed?

noobzilla wrote:
Tue Jan 26, 2021 11:42 pm
Finally got the adapter to mount my camera to the Leica DMLB. . . .
N-zilla -- Hoping you can describe in some detail which setup (configuration and source of the adapter) provided you with the best images?
by PeteM
Tue Feb 23, 2021 4:10 am
Forum: Camera systems and imaging
Topic: Interesting comparison using Amscope cameras
Replies: 2
Views: 85

Re: Interesting comparison using Amscope cameras

Curious - and a couple questions, Greg.

1) Is "FM 037" a .37 reduction lens and "FM 050" a .50 reduction lens?? Otherwise similar in that they drop into a microscope tube and have a C-mount?

2) I vaguely recall the Amscope camera software had a setting to flip the picture. Not so?
by PeteM
Mon Feb 22, 2021 10:25 pm
Forum: Camera systems and imaging
Topic: Best c-mount camera?
Replies: 12
Views: 212

Re: Best c-mount camera?

Thanks - keep us posted.
by PeteM
Mon Feb 22, 2021 5:52 am
Forum: Camera systems and imaging
Topic: Best c-mount camera?
Replies: 12
Views: 212

Re: Best c-mount camera?

The Ebay link shows the adapter on an older A.O. infinity microscope. The seller (Newhoper) is reliable - you might message him and ask about your specific scope and that adapter.
by PeteM
Mon Feb 22, 2021 4:32 am
Forum: Camera systems and imaging
Topic: Best c-mount camera?
Replies: 12
Views: 212

Re: Best c-mount camera?

Don't believe you'll be able to pick up the image directly on you finite scope with that adapter slipped into one of the binocular tubes.
by PeteM
Mon Feb 22, 2021 3:51 am
Forum: Camera systems and imaging
Topic: Best c-mount camera?
Replies: 12
Views: 212

Re: Best c-mount camera?

You may have "infinity" microscope objectives? It wasn't obvious to me from the link. If so, it looks like you could remove the lens and replace it with a Samsung NX mount to C-mount to microscope tube adapter. You might find the sensor and image size satisfactory without any additional optics. Sinc...
by PeteM
Mon Feb 22, 2021 3:43 am
Forum: Camera systems and imaging
Topic: Best c-mount camera?
Replies: 12
Views: 212

Re: Best c-mount camera?

If you find a way to put your camera in manual mode and mount it securely above (and at the same angle) as an eyepiece - it can probably get you started. Perhaps a tripod or something like a Manfrotto arm to hold the camera just right. You'll have to check the camera model to see if it directly supp...
by PeteM
Sun Feb 21, 2021 9:06 pm
Forum: Microscopes and optics
Topic: olympus KHC disassembly question
Replies: 2
Views: 87

Re: olympus KHC disassembly question

Not sure about the KHC, but the central shaft and drive pinion can be removed from either side in some microscopes. Perhaps it will withdraw if you free up the other side of the focus assembly?? Picture might help others with a KHC recognize what you're facing. Worst case, you might be able to get a...
by PeteM
Sun Feb 21, 2021 4:44 pm
Forum: Illumination Techniques
Topic: Phase Contrast Question
Replies: 5
Views: 191

Re: Phase Contrast Question

Only the central vision of our eyes is sharp. Our brains make up a sharp image through a variety of techniques (scanning the image with eye movements, continuously focusing, etc.). So a regular achromat objective can look pretty good at low magnification. Typical cameras aren't so forgiving. If the ...
by PeteM
Fri Feb 19, 2021 12:18 am
Forum: Specimens, samples and slides
Topic: Final Lichen Images - Apothecia!
Replies: 18
Views: 378

Re: Final Lichen Images - Apothecia!

Bravo, John.
by PeteM
Thu Feb 18, 2021 9:33 pm
Forum: Microscopes and optics
Topic: Does it make sense to use Nikon CFN lenses on a olympus BH-2?
Replies: 18
Views: 380

Re: Does it make sense to use Nikon CFN lenses on a olympus BH-2?

A few thoughts. Olympus SPlan objectives and Nikon CFN finite objectives (the larger barreled ones with slightly higher numerical apertures) are essentially equivalent. The Nikon Plan CF objectives are equivalent to Olympus DPlan. And within a smaller image circle, the Olympus D Plan objectives are ...
by PeteM
Wed Feb 17, 2021 3:12 am
Forum: Microscopes and optics
Topic: Any advice on Leitz 402aa repair?
Replies: 4
Views: 99

Re: Any advice on Leitz 402aa repair?

Simplest possibility is that you have withdrawn a centering screw so far that it jams rotation?

If that's not it, take it apart. Reset the annulus, which may be cocked out of position and preventing rotation?
by PeteM
Wed Feb 17, 2021 3:10 am
Forum: Microscopy accessories
Topic: Carry/Storage Case For Swift 380T
Replies: 9
Views: 229

Re: Carry/Storage Case For Swift 380T

Here's another option - a padded case just about the right size for that size Swift, AmScope, Omax, etc. https://www.ebay.com/itm/Respironics-Inc-Black-Medium-Weight-Padded-Travel-Bag-CPAP-Carrying-Case-II/203277204755?epid=668530397&hash=item2f5443fd13:g:VxMAAOSwZ-5fnIRU These are well padded, well...
by PeteM
Tue Feb 16, 2021 1:26 am
Forum: Microscopes and optics
Topic: "New" eyepiece technology to eliminate "floaters"
Replies: 14
Views: 526

Re: "New" eyepiece technology to eliminate "floaters"

The technology is different - the links above have a bit more information. There's a sort of spinning disk with tiny lenses involved. Your digital screen likely makes more sense for a compound scope but maybe not a stereo microscope. Since this was introduced 17 or 18 years ago, could be you'd find ...
by PeteM
Tue Feb 16, 2021 1:03 am
Forum: Microscopes and optics
Topic: Retrofitting phase contrast hardware
Replies: 4
Views: 132

Re: Retrofitting phase contrast hardware

Most bacteria are pretty small - and typically stained to see even the rough shapes at 400x. Fungi range from tiny to huge, of course. If you're sure that 40x (400x with 10x eyepieces) phase contrast is just right for the bacteria and fungi of interest, you might consider buying a cheap microscope e...
by PeteM
Tue Feb 16, 2021 12:58 am
Forum: Microscopes and optics
Topic: "New" eyepiece technology to eliminate "floaters"
Replies: 14
Views: 526

Re: "New" eyepiece technology to eliminate "floaters"

LouiseScot wrote:
Tue Feb 16, 2021 12:11 am
I suffer from . . .Louise
Shame you're not closer, I'd let you try this out. However, Vision Engineering is a UK company and I'd guess there must be some near by?
by PeteM
Sun Feb 14, 2021 11:42 pm
Forum: Microscopes and optics
Topic: "New" eyepiece technology to eliminate "floaters"
Replies: 14
Views: 526

Re: "New" eyepiece technology to eliminate "floaters"

I tried this out on a couple of stereo microscopes. Some more pros and cons observed. Pro: The "softness" I saw in the compound microscope images didn't show up at lower magnification (6x to 40x). Image quite clear, with good contrast. Con: You don't want a stereo microscope with widely divergent ey...
by PeteM
Sun Feb 14, 2021 7:45 am
Forum: Microscopes and optics
Topic: "New" eyepiece technology to eliminate "floaters"
Replies: 14
Views: 526

Re: "New" eyepiece technology to eliminate "floaters"

Good point about the vast improvement of screens, Bob. Could be "ISIS" is best used on a stereo microscope, where the 3D view can be retained.

And I do like the idea of considering her more like the original Egyptian goddess, than yet another name ground up over time.