Search found 7766 matches

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: 2304

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: 1052

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: 1365

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: 2351

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: 1334

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: 1067

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: 1246

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: 1419

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: 1322

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: 782

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 :) .
by ChrisR
Wed Jul 29, 2020 2:19 am
Forum: General Discussion Forum and Community Announcements
Topic: Dark fish
Replies: 9
Views: 2551

Re: Dark fish

OK< here's a better one :-k :


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png.png
by ChrisR
Mon Jul 27, 2020 3:07 pm
Forum: Frequently Asked Questions (FAQs)
Topic: FAQ: Screw Threads we use
Replies: 25
Views: 63295

Re: FAQ: Screw Threads we use

Some do, some don't! Some "One Inch" ones are sloppy enough, too.
by ChrisR
Mon Jul 27, 2020 10:24 am
Forum: General Discussion Forum and Community Announcements
Topic: E-mail notification of PMs turned off by upgrade
Replies: 1
Views: 945

Re: E-mail notification of PMs turned off by upgrade

You're right Alan. There's a post here ; the reminder is probably timely. :)
by ChrisR
Sun Jul 26, 2020 2:53 am
Forum: General Discussion Forum and Community Announcements
Topic: Dark fish
Replies: 9
Views: 2551

Dark fish

Manipulating surface structures, to hide:
Annotation 2020-07-26 112357.png
https://www.cell.com/current-biology/fu ... 20)30860-5
by ChrisR
Sun Jul 26, 2020 2:51 am
Forum: General Discussion Forum and Community Announcements
Topic: ...for personal use only
Replies: 3
Views: 1360

Re: ...for personal use only

Did you complain to Ebay? I've found them to be quite good when people have stolen my pictures.