Search found 7771 matches

by ChrisR
Fri Dec 25, 2020 4:42 am
Forum: Beginners Micro
Topic: Microscope for crystal photography advice
Replies: 9
Views: 341

Re: Microscope for crystal photography advice

For biological use the SP150 looks like a sound choice. For higher magnifications, which you will probably want, you'll use the condenser and turret to swap objectives, which your rail is lacking. The "advanced" polarising kit which gives you a rotating lower pol would be the one to go for. The dark...
by ChrisR
Mon Dec 21, 2020 9:29 am
Forum: Administrator's Appreciation Gallery...Photography Through the Microscope
Topic: Dioptase on Calcite
Replies: 7
Views: 2007

Re: Dioptase on Calcite

Very nice - what "tube" lens are you using on the UM-2?
by ChrisR
Thu Dec 17, 2020 3:01 pm
Forum: General Discussion Forum and Community Announcements
Topic: Interesting stuff
Replies: 18
Views: 2737

Re: Interesting stuff

I've been offline a while, and missed this. My uncle was a watchmaker, his workroom had a lifetime's collection of materials like Ray's. He used his "set of turns", which I think he'd made himself, rather than a full lathe. I made a couple of replacement pinions and bushed a couple of tiny watch pla...
by ChrisR
Mon Dec 14, 2020 6:37 am
Forum: Photography Through the Microscope
Topic: Sphagnia fluoro
Replies: 5
Views: 660

Re: Sphagnia fluoro

Beauties, but do you have any idea why some of the chloroplasts don't seem to be "turned on". Bleaching?

I thought "Royal Blue" was tradiitonal exciter, ~430nm, though I expect the difference would be quantitative only.
by ChrisR
Sun Dec 06, 2020 5:38 am
Forum: Community Members and Friends
Topic: Greetings, new member here.
Replies: 2
Views: 1995

Re: Greetings, new member here.

We're slipping - "Welcome to the forum"!

You have something like a 10^21x distance ratio, there , well done :)
by ChrisR
Mon Oct 19, 2020 6:37 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fluorite with masking tape
Replies: 12
Views: 3566

Re: Fluorite with masking tape

Interesting, and well taken. I imagine heat, or something may have diffused into the more active sites on the structure, during or after its browth, but I have no idea what. It doesn't seem to be common? UV result may reveal something because it's the impurities which fluoresce. Pure CaF2 doesn't. L...
by ChrisR
Mon Oct 19, 2020 5:47 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Calla w/Apo-Germinar
Replies: 6
Views: 1955

Re: Calla w/Apo-Germinar

I imagine there are several tonnes of detail we can't discern, there, Bob. Do you have it larger anywhere?
by ChrisR
Fri Sep 18, 2020 12:25 am
Forum: Nature Photography -- Macro and Close-up
Topic: Autumn mantid
Replies: 7
Views: 1998

Re: Autumn mantid

I like that a lot. The composition with the orange parts probably isn't one you'd find in a book, but they add warmth and contrast to the animal.
I think I'd be tempted to clone in a mirror-image antenna!
by ChrisR
Sat Aug 29, 2020 5:58 pm
Forum: Beginners Macro
Topic: Macro gear for a beginner?
Replies: 5
Views: 3119

Re: Macro gear for a beginner?

HI Flevioma.
A 600D is fine
I'm moving this to "Beginners macro". Do have a look there, there are some good answers.
How close Macro do you want to go? (In field-of-view terms?)
by ChrisR
Fri Aug 28, 2020 1:09 pm
Forum: Photography Through the Microscope
Topic: Cell Phones, Dedicated Cameras and DSLRs for Photomicrography
Replies: 6
Views: 1676

Re: Cell Phones, Dedicated Cameras and DSLRs for Photomicrography

An interesting and informative article, Robert, thank you for sharing your results.
by ChrisR
Tue Aug 25, 2020 11:30 am
Forum: General Discussion Forum and Community Announcements
Topic: Zeiss and Leica
Replies: 0
Views: 1614

Zeiss and Leica

...are about the only well known organisations whose boxes I tick to receive all the stuff they offer. I urge you do try - they don't take liberties. The Zeiss calendar is a bit special, though it bewilders me. The latest from Leica - for me every article was worth reading : https://www2.leicabiosys...
by ChrisR
Sat Aug 22, 2020 4:20 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Some Iris images
Replies: 6
Views: 1556

Re: Some Iris images

Would make super prints, #6 & #7 particularly.
by ChrisR
Sat Aug 15, 2020 6:49 pm
Forum: Beginners Macro
Topic: First Stacks with Lomo 3,7 x 11 need guidance...
Replies: 1
Views: 1668

Re: First Stacks with Lomo 3,7 x 11 need guidance...

They look pretty successful to me :D The two things to keep under control are 1) lighting diffusion. You have discovered how light you probably thought was pretty flat, gives you a contrasty image. It's a good exercise to first use multiple flashes, or diffusers and reflectors, to get it as absolute...
by ChrisR
Sat Aug 15, 2020 6:39 pm
Forum: Beginners Macro
Topic: Q: circular polar filter/analyzer for DSLR+tube lens+plan APO setup?
Replies: 1
Views: 1556

Re: Q: circular polar filter/analyzer for DSLR+tube lens+plan APO setup?

Sorry you didn't get an answer ( I don't think it was covered inthe later post) Chris S. is away at the moment, and I'm not sure if he fitted a n analyzer to his Bratcam. He'll be happy to give details if he did. Between the Objective and the"tube" lens the bundles of light are parallel (if tube len...
by ChrisR
Wed Jul 29, 2020 3:17 am
Forum: Macro & Microscopy Articles
Topic: An Atlas of Sphagnum-dwelling testate amoebae in Bulgaria (2019)
Replies: 1
Views: 1052

Re: An Atlas of Sphagnum-dwelling testate amoebae in Bulgaria (2019)

Super SEM pictures. And you don't have to be a member; it downloads then asks you to join :) .