Search found 1547 matches
- Thu Nov 10, 2022 5:17 am
- Forum: Introduce yourself
- Topic: Microscope for video/visual art suggestions needed
- Replies: 8
- Views: 2136
Re: Microscope for video/visual art suggestions needed
Yeah maybe look for a macroscope. Those apozooms I hear are good but a little more than what you're looking to spend. Maybe a different one. This polish artist is not doing super close work from what I can tell. You can even see his ring light in the reflections of his sample in some! He says he dus...
- Wed Nov 09, 2022 2:27 pm
- Forum: Beginner's corner
- Topic: B&L SZ4 Does not stay in Focus when Zoomed
- Replies: 13
- Views: 2390
Re: B&L SZ4 Does not stay in Focus when Zoomed
Not exactly sure but B&L stuck with imperial units until the very end.
- Tue Nov 08, 2022 4:22 pm
- Forum: Beginner's corner
- Topic: B&L SZ4 Does not stay in Focus when Zoomed
- Replies: 13
- Views: 2390
Re: B&L SZ4 Does not stay in Focus when Zoomed
I've only adjusted the lenses in the sz7, where my advice there would be, "don't". Someone out there has a sz4 service manual pdf pretty sure. I only have the sz7 one.
- Mon Nov 07, 2022 11:15 pm
- Forum: Beginner's corner
- Topic: B&L SZ4 Does not stay in Focus when Zoomed
- Replies: 13
- Views: 2390
Re: B&L SZ4 Does not stay in Focus when Zoomed
https://www.covingtoninnovations.com/stereozoom/
Here's the adjustments you should make sure you have done before taking it apart and then instructions on taking.it apart.
Here's the adjustments you should make sure you have done before taking it apart and then instructions on taking.it apart.
- Sat Nov 05, 2022 4:56 am
- Forum: Beginner's corner
- Topic: B&L SZ4 Does not stay in Focus when Zoomed
- Replies: 13
- Views: 2390
Re: B&L SZ4 Does not stay in Focus when Zoomed
It should be parfocal throughout the zoom. Does it stay in focus when zooming out?
- Sun Oct 30, 2022 5:07 pm
- Forum: Camera systems and imaging
- Topic: LED white balance and blue/green artifacts
- Replies: 25
- Views: 3480
Re: LED white balance and blue/green artifacts
I picked up a Schott KL1500 for cheap that I will try to convert to LED. I was planning to use a high CRI neutral white LED All LEDs on the market today feature a significant hole in the green range. This is the reason why color critical applications like pol-microscopes still have halogen illumina...
- Sat Oct 29, 2022 10:48 pm
- Forum: Beginner's corner
- Topic: B&L SZ4 Does not stay in Focus when Zoomed
- Replies: 13
- Views: 2390
Re: B&L SZ4 Does not stay in Focus when Zoomed
Sometimes this.problem can be helped by adjusting the eyepiece distance
- Sat Oct 29, 2022 10:46 pm
- Forum: Camera systems and imaging
- Topic: LED white balance and blue/green artifacts
- Replies: 25
- Views: 3480
Re: LED white balance and blue/green artifacts
I have not seen any 30 watt LEDs with particularly even spectra.
- Fri Oct 28, 2022 8:02 pm
- Forum: Illumination Techniques
- Topic: DIY Epi Illuminator
- Replies: 25
- Views: 4342
Re: DIY Epi Illuminator
The microzoom has only a single collimating lens for.the illuminator. The coaxial illuminator for the sz7 has one lens per eye, in addition to the polarizers.LouiseScot wrote: ↑Fri Oct 28, 2022 3:08 pmanyone ever looked inside an epi/vertical illuminator and seen the lenses?
Thanks
Louise
- Fri Oct 28, 2022 4:58 am
- Forum: Introduce yourself
- Topic: Microscope for video/visual art suggestions needed
- Replies: 8
- Views: 2136
Re: Microscope for video/visual art suggestions needed
I think ideally you're going to want a mitutoyo finescope with maybe a 20x at most. Pricey though, but it's set up for photos and enough working distance for lighting and interaction
- Fri Oct 28, 2022 4:32 am
- Forum: Illumination Techniques
- Topic: DIY Epi Illuminator
- Replies: 25
- Views: 4342
Re: DIY Epi Illuminator
I'm not exactly sure how to interpret this four ray ray tracing diagram.
- Thu Oct 27, 2022 6:51 pm
- Forum: Illumination Techniques
- Topic: DIY Epi Illuminator
- Replies: 25
- Views: 4342
Re: DIY Epi Illuminator
Thorlabs sells some nice aspheric lenses for pretty cheap for this kind of thing that I have had success with. They even have the option of grinding one side of you want diffusion
- Thu Oct 27, 2022 4:01 am
- Forum: Specimens, samples and slides
- Topic: Expensive slide
- Replies: 2
- Views: 1307
Re: Expensive slide
Very nice. H-e works so well but sometimes you wish the anatomists would branch out a little? Anyway, looks like a primo section.
- Thu Oct 27, 2022 3:55 am
- Forum: Microscopes and optics
- Topic: Comparison of the tiny scopes
- Replies: 7
- Views: 1597
Re: Comparison of the tiny scopes
It is a Nikon universal illuminator fitted with a quality single led at about 4 watts, adjustable with voltage dimming. I like the little Nikon lamps and have two of them, both fitted with LEDs. They are equipped with a field iris and have a large collector lens on a helicoid focuser.
- Tue Oct 25, 2022 11:51 pm
- Forum: Microscopes and optics
- Topic: An objective for every situation
- Replies: 6
- Views: 1336
Re: An objective for every situation
I never thought I would collect so many objetives but I seem to have one for just about every need. It looks impressive but there is a lot of duplication. However, several of the objectives have longer working distances than others, which I find that useful when viewing pond water without using a c...
- Mon Oct 24, 2022 3:16 am
- Forum: For forum members who want to buy and sell equipment
- Topic: Buying Olympus parts, lots of stuff for sale.
- Replies: 8
- Views: 2022
Re: Buying Olympus parts, lots of stuff for sale.
I'm familiar with the lens arrangement. It is certainly B&L's finest variable focus achromat condenser. The iris could easily be fixed, but as it works more or less just fine I will leave it as it is. I am now think how to adapt or manufacture a condenser holder for it. Quite a catch, a piece I have...
- Sat Oct 22, 2022 12:35 am
- Forum: Microscopes and optics
- Topic: Comparison of the tiny scopes
- Replies: 7
- Views: 1597
Comparison of the tiny scopes
I was finally able to acquire a very nice Model R example for a song, and so I can post some pictures of its quality. https://i.imgur.com/Iw6OZd3.jpeg This is using a Nikon CF Plan Apo 10x on a full frame B&L Dynazoom with an Optem 50% reduction lens and a Pi HQ camera. The Dynazoom is outfitted wit...
- Mon Oct 17, 2022 11:49 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: Buying Olympus parts, lots of stuff for sale.
- Replies: 8
- Views: 2022
Re: Buying Olympus parts, lots of stuff for sale.
Ah, I bought the B&L condenser. I am hoping it is the variable focus type as I would like it for an ancient Bausch stand of.mine. Anyway, I can say you certainly were easy to work with I have no idea how that condenser works, but I can confidently guess it is a "focus type". There are two dials, on...
- Wed Oct 12, 2022 11:33 pm
- Forum: Beginner's corner
- Topic: Staining Nematodes
- Replies: 6
- Views: 1408
Re: Staining Nematodes
I use phase. The old timers used picric acid to impart a yellow shade, but you probably don't want to do that.
I bet DIC works good.
I bet DIC works good.
- Wed Oct 12, 2022 4:24 pm
- Forum: Beginner's corner
- Topic: I think I need a tutor, OR microscopes for sale
- Replies: 13
- Views: 4225
Re: I think I need a tutor, OR microscopes for sale
This is an old thread but a scope with a mirror and that illuminator and that condenser is an excellent combination and should be able to provide even, bright light to the competent operator. Although small of field and without planar correction, several of those objectives should be able to produce...
- Tue Oct 11, 2022 2:53 am
- Forum: For forum members who want to buy and sell equipment
- Topic: Buying Olympus parts, lots of stuff for sale.
- Replies: 8
- Views: 2022
Re: Buying Olympus parts, lots of stuff for sale.
Perfect! Exactly as I had hoped for. An oblique plate would be nifty, but I think for this one a.good old iris I'm fixing up will do
- Mon Oct 10, 2022 4:31 am
- Forum: Beginner's corner
- Topic: How to Sew a Buttonhole: Tips for Beginners
- Replies: 3
- Views: 1095
Re: Advice on which microscope to purchase?
What would you like to look at?
- Mon Oct 10, 2022 4:29 am
- Forum: For forum members who want to buy and sell equipment
- Topic: Buying Olympus parts, lots of stuff for sale.
- Replies: 8
- Views: 2022
Re: Buying Olympus parts, lots of stuff for sale.
Ah, I bought the B&L condenser. I am hoping it is the variable focus type as I would like it for an ancient Bausch stand of.mine. Anyway, I can say you certainly were easy to work with
- Mon Oct 03, 2022 6:24 pm
- Forum: Specimens, samples and slides
- Topic: DIY prepared slides archive
- Replies: 4
- Views: 1778
Re: DIY prepared slides archive
Glycerin is often described as temporary mounts, but I have some nematodes that were put into 60-70 years ago that look quite good.
- Sun Oct 02, 2022 12:58 pm
- Forum: Specimens, samples and slides
- Topic: DIY prepared slides archive
- Replies: 4
- Views: 1778
Re: DIY prepared slides archive
While temporary mounts are quite simple, making permanent ones is an art of nearly limitless depth. Moreover, each type of sample has different approaches and known solutions. I would recommend firstly checking out the posts here on the subject as well as the subforum devoted to books, of which ther...
- Sun Oct 02, 2022 12:51 pm
- Forum: Beginner's corner
- Topic: View through each eyepice is not aligned with my B&L sz7. How can I fix this?
- Replies: 6
- Views: 1438
Re: View through each eyepice is not aligned with my B&L sz7. How can I fix this?
Thank you! Excellent.
- Sun Oct 02, 2022 12:06 am
- Forum: My microscope
- Topic: My Bausch & Lomb Galen11
- Replies: 4
- Views: 1594
Re: My Bausch & Lomb Galen11
Neat! This is a completely different looking phase setup from the b&l/Leica Galen (plan)phase set I have. I wonder if they are at all compatible.
- Sun Oct 02, 2022 12:00 am
- Forum: Beginner's corner
- Topic: View through each eyepice is not aligned with my B&L sz7. How can I fix this?
- Replies: 6
- Views: 1438
Re: View through each eyepice is not aligned with my B&L sz7. How can I fix this?
Oh, just the mirror on the photo adapter would be ideal. My sz7 works very well, especially with those 15x uwf aerial surveillance eyepieces like you have. It's only when looking through the photo port do I see some issues. Thanks very much! I'm glad your instrument is working for you. The sz7 to me...
- Thu Sep 29, 2022 3:53 pm
- Forum: Beginner's corner
- Topic: I need stuff!
- Replies: 8
- Views: 1919
Re: I need stuff!
I have heard of fisher being called the Walmart of science
- Tue Sep 27, 2022 1:29 pm
- Forum: Pictures and Videos
- Topic: What is this on my new microscope? I need help
- Replies: 4
- Views: 1280
Re: What is this on my new microscope? I need help
You might be focusing on the top of the condenser or having some surface of your field light source projected. You did your proper Kohler exercise I assume?