Search found 93 matches

by Bryan
Mon Jun 10, 2019 11:15 pm
Forum: My microscope
Topic: Olympus VT-II Stereo Microscope
Replies: 7
Views: 5031

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: 5031

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: 1619

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: 1619

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: 2190

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: 2934

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: 2934

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: 2934

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...
by Bryan
Tue Apr 09, 2019 4:40 pm
Forum: Pictures and Videos
Topic: Bugs, Grass and Diatoms
Replies: 0
Views: 2416

Bugs, Grass and Diatoms

These photos are from some antique microscope slides I recently purchased off the evil auction site. As I have mentioned before I like to shoot on film so this was an exercise in improving my photography skills with that medium. Since focus stacking would be quite difficult with film I was trying to...
by Bryan
Tue Mar 26, 2019 3:31 am
Forum: Pictures and Videos
Topic: Crystal Mania
Replies: 8
Views: 3431

Re: Crystal Mania

Beautiful shots! How much vitamin C do you put into solution? I was doing 1/4 teaspoon in 30ml solution.
by Bryan
Tue Mar 19, 2019 1:42 am
Forum: Pictures and Videos
Topic: Cyclopoid nauplius
Replies: 10
Views: 4025

Re: Cyclopoid nauplius

Very nice image! What a creepy looking critter.
by Bryan
Mon Mar 11, 2019 8:26 pm
Forum: Pictures and Videos
Topic: Crystals and Polarized light
Replies: 8
Views: 2286

Re: Crystals and Polarized light

Thanks Bryan - I noticed you added table salt - it turns out that every alcoholic drink I add table salt do also crystallizes. So I tried NaOH no crystals. I tried NaCl (table salt) to, water, methanol, and ispropanol - no crystals suggesting it is the Cl ion that might be important or something in...
by Bryan
Mon Mar 11, 2019 6:09 pm
Forum: Sandbox
Topic: flickr test embed
Replies: 8
Views: 15020

Re: flickr test embed

mrsonchus wrote:Thanks for the info, what's it like as a place to keep photos online do you think?

John B.
I like it, they give several options for sharing photos on other sites.
by Bryan
Mon Mar 11, 2019 6:06 pm
Forum: Pictures and Videos
Topic: Crystals and Polarized light
Replies: 8
Views: 2286

Re: Crystals and Polarized light

Wow, great colors! I posted this on Beerenol crystals a while back. they don't produce a lot of color but the structure is interesting. http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=6&t=6883&hilit=beerenol It's a film developer I came up with for black and white film. This is the rec...
by Bryan
Mon Mar 11, 2019 5:59 pm
Forum: Microscopes and optics
Topic: Simple cleaning of a partially frozen field diaphragm
Replies: 4
Views: 3340

Re: Simple cleaning of a partially frozen field diaphragm

Graphite also works well for that. Sprinkle some on the blades and work it in. Then blow away the excess. I have done this on camera lenses, just don't get it on any on the glass lens. They usually sell it in the lock and key section of hardware stores. It's often used to lubricate locks. On camera ...
by Bryan
Mon Mar 11, 2019 1:47 pm
Forum: Sandbox
Topic: flickr test embed
Replies: 8
Views: 15020

Re: flickr test embed

Yes, looking good! Nice clear vid/animation too. How is the venerable Flickr these days, since turning 'pro'? I used to 'be on' Flickr many moons ago, and did like it's interface and basic organisation. It's now a subscription service? John B. You can have up to 1,000 photos without paying for a su...
by Bryan
Sun Mar 10, 2019 4:54 pm
Forum: Microscopes and optics
Topic: Possible to lubricate iris-equipped objectives?
Replies: 17
Views: 5257

Re: Possible to lubricate iris-equipped objectives?

I’ve had some luck with this on old camera lenses. What 75RR said about heating it can help but I usually use a hair dryer. That way you avoid over heating it and you can keep adding heat as you work it. If the problem is hardened grease this can help but sometimes the grease will re-harden when it ...
by Bryan
Fri Mar 08, 2019 4:33 pm
Forum: Microscopes and optics
Topic: Leitz Eyepiece Questions
Replies: 8
Views: 3658

Re: Leitz Eyepiece Questions

Thanks for the response apochronaut. I found a good deal on this pair of Periplan 10X O so I'll give them a try. They look like a newer version but also slightly longer than the one pictured above. I have seen much longer ones that I assume are the ones you were referring to. Hopefully these help wi...
by Bryan
Fri Mar 08, 2019 4:57 am
Forum: Microscopes and optics
Topic: Leitz Eyepiece Questions
Replies: 8
Views: 3658

Re: Leitz Eyepiece Questions

Does anyone know what the “O” in the designation “10X O” means on this Periplan eyepiece?
6590A89D-C136-4F09-B75C-0CE65AA8C510.jpeg
6590A89D-C136-4F09-B75C-0CE65AA8C510.jpeg (85.47 KiB) Viewed 3476 times
by Bryan
Mon Mar 04, 2019 10:34 pm
Forum: Microscopes and optics
Topic: Leitz Eyepiece Questions
Replies: 8
Views: 3658

Re: Leitz Eyepiece Questions

Thanks for the information Bob. Based on the table below that came with my microscope it looks like I may benefit from Periplan eyepieces when I use my 100X Oil objective. My microscope has a 170mm tube length so I assume I should avoid the Periplan 10x18 eyepieces. If I'm reading my chart correctly...
by Bryan
Mon Mar 04, 2019 7:09 pm
Forum: Microscopes and optics
Topic: Mechanical stage binding
Replies: 4
Views: 2332

Re: Mechanical stage binding

Did you clean off the old grease? Grease that was used when that microscope was made can harden over time. Maybe a cleaning with solvent then re-greasing it will help.
by Bryan
Mon Mar 04, 2019 6:58 pm
Forum: Microscopes and optics
Topic: Leitz Eyepiece Questions
Replies: 8
Views: 3658

Leitz Eyepiece Questions

The more I look into Leitz eyepieces the more confused I get. I know there are many different designations for eyepieces depending on the use but my questions are fairly basic. I have a Leitz SM microscope from around 1957, it came with 10X and 6X paired eyepieces. These have the "B" designation to ...
by Bryan
Sun Feb 10, 2019 3:40 am
Forum: Microscopes and optics
Topic: gluing the condenser
Replies: 5
Views: 1892

Re: gluing the condenser

Lenses are usually glued together with Canada Balsam. At least that’s how it was done in the past, they may have some new high tech adhesive now.
by Bryan
Sun Dec 30, 2018 6:03 pm
Forum: Pictures and Videos
Topic: Beerenol Crystals
Replies: 1
Views: 1308

Re: Beerenol Crystals

The link below is a GIF of the crystals growing, also shot on film. These were 10 second exposures shot one after the other, that should give you an idea how fast the crystals grow.

https://giphy.com/gifs/cXM2VQleOnIVQSwA7S
by Bryan
Sun Dec 30, 2018 5:57 pm
Forum: Pictures and Videos
Topic: Beerenol Crystals
Replies: 1
Views: 1308

Beerenol Crystals

I'm a film photographer and I like to develop my own black and white film. I use a home made developer that I created called Beerenol or Beerol. It's based off Caffenol, another home made developer that has been around a while. Caffenol uses instant coffee where Beerenol uses beer. Lately I have bee...
by Bryan
Sat Dec 29, 2018 5:48 am
Forum: Pictures and Videos
Topic: Birefringence of Ice
Replies: 10
Views: 2628

Re: Birefringence of Ice

Nice colors, I would have thought the ice would melt too fast, do you use an led light source?
by Bryan
Mon Nov 19, 2018 2:24 am
Forum: Pictures and Videos
Topic: Malic Acid crystal explorations in polarized light [Large file warning]
Replies: 10
Views: 3250

Re: Malic Acid crystal explorations in polarized light [Large file warning]

Those are beautiful, lately I’ve been growing some ascorbic acid Chrystal’s with some good results. What recipe did you use to grow the malic acid crystals? Is this from a malic acid supplement that you can get at the drug store or do you need a higher grade? Thanks Bryan! Yup absorbic acid produce...
by Bryan
Sun Nov 18, 2018 7:31 pm
Forum: Pictures and Videos
Topic: Malic Acid crystal explorations in polarized light [Large file warning]
Replies: 10
Views: 3250

Re: Malic Acid crystal explorations in polarized light [Large file warning]

Those are beautiful, lately I’ve been growing some ascorbic acid Chrystal’s with some good results. What recipe did you use to grow the malic acid crystals? Is this from a malic acid supplement that you can get at the drug store or do you need a higher grade?
by Bryan
Thu Nov 15, 2018 9:56 pm
Forum: Pictures and Videos
Topic: Parascaris mitosis
Replies: 4
Views: 1429

Re: Parascaris mitosis

That looks great Aslan, did you stain it? Do you have information on the LED bulb you used?
by Bryan
Wed Nov 14, 2018 5:38 pm
Forum: Resources (online, books etc.)
Topic: Leitz SM manual
Replies: 5
Views: 3417

Re: Leitz SM manual

These are sales brochures for the Leitz SM Microscope. They have good information on the different options and accessories that were available plus data on the objectives and eyepieces.
Leitz Medical and Student Microscope - 1964.pdf
(1.7 MiB) Downloaded 292 times
This one is in German.
Leitz Mikroskop SM 1960.pdf
(1.46 MiB) Downloaded 261 times