Search found 85 matches

by Bryan
Fri Jun 12, 2020 3:47 pm
Forum: Specimens, samples and slides
Topic: Where did the bubbles go?
Replies: 4
Views: 874

Re: Where did the bubbles go?

DonSchaeffer wrote:
Thu Jun 11, 2020 8:45 pm
Hmm! Lovely slide.
Thanks Don, I'm having fun learning this process, the bugs around my house aren't enjoying it much though.
by Bryan
Thu Jun 11, 2020 4:09 pm
Forum: Specimens, samples and slides
Topic: Where did the bubbles go?
Replies: 4
Views: 874

Re: Where did the bubbles go?

Not sure why the first picture is getting flipped around above they are all the same direction on my computer. Here are the last two.
IMG_6834s.jpg
IMG_6834s.jpg (68.66 KiB) Viewed 873 times
IMG_6835s.jpg
IMG_6835s.jpg (81.82 KiB) Viewed 873 times
by Bryan
Thu Jun 11, 2020 4:07 pm
Forum: Specimens, samples and slides
Topic: Where did the bubbles go?
Replies: 4
Views: 874

Where did the bubbles go?

I recently made a microscope slide of a macerated insect in a deep well slide. I was kind of upset at the bubbles but set it aside to dry. It takes a while for these dry, if they ever fully dry. When I came back to it the bubbles were gone. On the next slide I made sure enough there were bubbles aga...
by Bryan
Sat May 16, 2020 8:10 pm
Forum: Pictures and Videos
Topic: Bugs on film
Replies: 6
Views: 436

Re: Bugs on film

Like the look of your Leica III and the focusing on the Focaslide is pretty nifty. I will probably end up with something like your setup on the Leitz SM with the 4x5 camera if the vibrations from my Olympus E-P2 (as I expect they will) prove troublesome when I try Direct Projection. The way I avoid...
by Bryan
Sat May 16, 2020 7:09 pm
Forum: Pictures and Videos
Topic: Bugs on film
Replies: 6
Views: 436

Re: Bugs on film

This is the 4X5 camera atached to the top of my Leitz SM microscope.
P6161182+.JPG
P6161182+.JPG (76.13 KiB) Viewed 427 times
by Bryan
Sat May 16, 2020 6:59 pm
Forum: Pictures and Videos
Topic: Bugs on film
Replies: 6
Views: 436

Re: Bugs on film

These slide mounts are too large to fit the whole insect into the field of view, even with my stereo scope. I shot these on 35mm black and white film using a Leica III rangefinder camera attached to a Leitz Focaslide, extension tubes and a Leitz Elmar 50mm lens. The Focaslide has a ground glass for ...
by Bryan
Sat May 16, 2020 6:29 pm
Forum: Pictures and Videos
Topic: Bugs on film
Replies: 6
Views: 436

Bugs on film

For the shot below I modified a lens board on a 4X5 press camera to adapt to my Leitz MIKAS microscope adapter. The MIKAS is designed to adapt a Leica 35mm rangefinder camera to a microscope but it’s easy to make modifications for just about any camera including digital. With the bellows on the pres...
by Bryan
Wed Apr 29, 2020 3:54 am
Forum: Illumination Techniques
Topic: Dark field illumination: Questions and answers
Replies: 65
Views: 17541

Re: Dark field illumination: Questions and answers

apochronaut wrote:
Tue Apr 28, 2020 1:37 pm
Here are some photos, as well.
Thanks for getting back to me on that, I’m watching a few on the evil auction site.
by Bryan
Fri Apr 24, 2020 6:37 pm
Forum: My microscope
Topic: Olympus VT-II Stereo Microscope
Replies: 7
Views: 4225

Re: Olympus VT-II Stereo Microscope

Dear Brian, I would ask you for a favour: Would you please measure the internal part of the ring that holds the main part of the microscope. I need this piece and I have seen I can get it at Internet, but I don't know it fits in my microscope. If you can provide a photo with a metre will be much ap...
by Bryan
Fri Apr 24, 2020 4:47 am
Forum: Illumination Techniques
Topic: Dark field illumination: Questions and answers
Replies: 65
Views: 17541

Re: Dark field illumination: Questions and answers

I'm not exactly sure of the era of the objectives, probably from about the first W.W. to the early 50's but the design is a split shroud, with a lens section below a knurled ring and a blank section with rear baffle only above it. You unthread the baffle section and replace it with the iris as an a...
by Bryan
Fri Apr 24, 2020 12:11 am
Forum: Illumination Techniques
Topic: Dark field illumination: Questions and answers
Replies: 65
Views: 17541

Re: Dark field illumination: Questions and answers

I'm bringing back this old thread because I just obtained a Leitz Immersion dark field condenser the same as one mentioned earlier in this thread. It came with the iris adapter pictured below and mentioned on the last page of the linked instructions. What I don't have is the objective head to attach...
by Bryan
Sat Feb 15, 2020 3:59 pm
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 12070

Re: reflected light silicon chip die

I have some chips similar in size that I mounted to slides without a cover glass. I find it difficult to photograph them because of the clear coating. Jb89, do you have any techniques you can share? Could you post some of your pictures? This is one I just took with my phone held to the eyepiece on ...
by Bryan
Wed Feb 12, 2020 7:37 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 12070

Re: reflected light silicon chip die

I have some chips similar in size that I mounted to slides without a cover glass. I find it difficult to photograph them because of the clear coating. Jb89, do you have any techniques you can share?
by Bryan
Thu Dec 12, 2019 5:17 am
Forum: Microscopes and optics
Topic: Leitz binocular head teardown
Replies: 9
Views: 2588

Re: Leitz binocular head teardown

A half and half mixture of hydrogen peroxide and ammonia will dissolve lens mold. Do this in a well ventilated area. If the mold etched the glass you will still have the etch but sometimes you luck out ant it all goes away. If it’s between cemented elements then you’re out of luck.
by Bryan
Sat Nov 30, 2019 8:51 pm
Forum: Illumination Techniques
Topic: Identifying asbestos
Replies: 26
Views: 7379

Re: Identifying asbestos

Some time ago I boiought a Lomo portable microscope, which is equipped for polarization work. It came in a fitted wood lined metal carry case, with the wedge and wave plates missing but I have managed to find the right ones, to fit their slots. It has the Bertrand lens in the upper part. They appea...
by Bryan
Fri Nov 29, 2019 5:48 pm
Forum: Microscopes and optics
Topic: Leitz and Lomo compatibility
Replies: 1
Views: 546

Leitz and Lomo compatibility

I’m wondering if there is any compatibility between parts with Lomo and Leitz. I know the Soviets took over Leitz factories after the war and continued production of Leica cameras without many changes. Same goes for Zeiss. Specifically I’m interested in some parts for my Leitz SM microscope from the...
by Bryan
Wed Nov 20, 2019 2:57 am
Forum: Introduce yourself
Topic: New Member Micro-Photography Specialist
Replies: 13
Views: 3312

Re: New Member Micro-Photography Specialist

Hey Brian, So you are making images from the specimens on the stage of your microscope? And 4x5 no less. Yes, that is photo micrography. It’s for scientific and teaching purposes. What I am doing is the opposite. I am taking pictures with the microscope as the camera to produce micro photographs di...
by Bryan
Sat Nov 16, 2019 4:02 am
Forum: Introduce yourself
Topic: New Member Micro-Photography Specialist
Replies: 13
Views: 3312

Re: New Member Micro-Photography Specialist

Welcome Mark, I’ll be interested to learn what you find out about micro-photographs. I’m a film shooter that recently started doing photo-microscopy. I first mounted a 35mm camera to my Leitz SM microscope and have since graduated to a medium format camera and a 4x5 camera. I’m making contact prints...
by Bryan
Sun Nov 10, 2019 3:29 am
Forum: Illumination Techniques
Topic: Identifying asbestos
Replies: 26
Views: 7379

Re: Identifying asbestos

Here’s some information on bulk asbestos identification. It sounds a lot like the method I used and it lists the oils that you need

https://www.cdc.gov/niosh/docs/2003-154/pdfs/9002.pdf
by Bryan
Sun Nov 10, 2019 3:18 am
Forum: Illumination Techniques
Topic: Identifying asbestos
Replies: 26
Views: 7379

Re: Identifying asbestos

You don’t need anywhere near 100 different RI oils, I think I had a set of less than a dozen and there were a few out of that set that got the most use. I wish I could remember what ones we used.
by Bryan
Wed Nov 06, 2019 5:42 am
Forum: Illumination Techniques
Topic: Identifying asbestos
Replies: 26
Views: 7379

Re: Identifying asbestos

My first job out of college was a microscopist I an asbestos lab. It’s been almost 30 years since I left that job but I remember a few things. I did two different types of analysis, the main one was PLM identification using a petrographic microscope. This was for identifying asbestos in bulk samples...
by Bryan
Wed Jul 31, 2019 2:41 am
Forum: Beginner's corner
Topic: Coverslip spacers for permanent mounts?
Replies: 8
Views: 4051

Re: Coverslip spacers for permanent mounts?

https://www.youtube.com/watch?v=iOe5VbaTexY https://www.youtube.com/watch?v=w_wki4O8urc One person used a opened hard drive. No pictures were given. I don't know if that was me but I did cobble one together from a hard drive, pipe fittings and some scrap wood. It works pretty good but a real one wo...
by Bryan
Mon Jun 10, 2019 11:15 pm
Forum: My microscope
Topic: Olympus VT-II Stereo Microscope
Replies: 7
Views: 4225

Re: Olympus VT-II Stereo Microscope

Thanks for all the information everyone, I'll definitely be looking for some 10X eye pieces. It looks like Olympus made a G10X 22 that should work with this scope properly.
by Bryan
Mon Jun 10, 2019 5:39 pm
Forum: My microscope
Topic: Olympus VT-II Stereo Microscope
Replies: 7
Views: 4225

Olympus VT-II Stereo Microscope

I've been trying to learn how to make permanent mounted insect slides and one problem I ran into was manipulating the little buggers into position with the equipment I have. I decided to break down and get a stereo microscope for this purpose. What I got is an Olympus VT-II, it's a good sturdy metal...
by Bryan
Tue May 07, 2019 3:24 pm
Forum: Identification help
Topic: Tiny Caterpillar?
Replies: 2
Views: 1398

Re: Tiny Caterpillar?

It's Polyxenus sp. Thanks Viktor! When I first saw it I was thinking Millipede but after seeing the tufts I thought it may be a caterpillar. I should have stuck with my first impression. Interesting how the tufts are a defense against ants. I have seen these in my yard in the past, I just never too...
by Bryan
Tue May 07, 2019 2:57 am
Forum: Identification help
Topic: Tiny Caterpillar?
Replies: 2
Views: 1398

Tiny Caterpillar?

I found a few of these critters in my back yard, it kind of looks like a tiny caterpillar. It's about 2mm long, anyone have any idea what it is? This is my first attempt at focus stacking, I used a free program called Picolay that someone recommended on this forum. It's 51 photos in the stack. Shot ...
by Bryan
Thu May 02, 2019 4:35 pm
Forum: Camera systems and imaging
Topic: A question about the Past - shutter induced-vibrations in film cameras
Replies: 4
Views: 1937

Re: A question about the Past - shutter induced-vibrations in film cameras

When I bought my Leitz MIKAS adapter a few years ago it came with a Nikon M35 camera attached. That camera has no shutter, it has a dark slide that you pull out by hand and what looks like a shutter button. The shutter button is just for releasing the film advance to go to the next frame. I think sh...
by Bryan
Wed May 01, 2019 8:36 pm
Forum: Camera systems and imaging
Topic: Medium Format Upgrade
Replies: 5
Views: 2158

Re: Medium Format Upgrade

The shutter shock on my Bronica would shake the whole house. Actually I'm not using the lens on the Bronica which has a leaf shutter built into it. What gives the biggest shock is the mirror flipping out of the way. Most of the shots I do are long exposure, that way I can close down the diaphragm as...
by Bryan
Wed May 01, 2019 7:13 pm
Forum: Camera systems and imaging
Topic: Medium Format Upgrade
Replies: 5
Views: 2158

Re: Medium Format Upgrade

Hi Bryan, your images look very good - sharp and contrasty. How do you digitize the film images? In normal photography I startet late with digital, my first digital Camera was a Pentax K110d DSLR in 2007. Up til then I frequently carried a medium format camera with B/W film along my 35mm film SLR. ...
by Bryan
Wed May 01, 2019 6:04 pm
Forum: Camera systems and imaging
Topic: Medium Format Upgrade
Replies: 5
Views: 2158

Medium Format Upgrade

As some of you may be aware from my past posts I like to shoot film. My current setup is a Leitz SM Microscope with a MIKAS camera adapter on a trinocular head. With the MIKAS adapter I can use leica thread mount cameras and, with adapters, just about any other 35mm camera. I wanted to upgrade to me...