Search found 4825 matches

by Pau
Thu May 06, 2021 7:11 am
Forum: Nature Photography -- Macro and Close-up
Topic: China Blue - Corydalis flexuosa
Replies: 7
Views: 244

Re: China Blue - Corydalis flexuosa

Lens (by Google) often works and is free, with your picture it arrives to the genus and suggests some species including C. flexuosa
by Pau
Thu May 06, 2021 7:03 am
Forum: Equipment Exchange
Topic: Free: Manfrotto 3232 tilting monopod head
Replies: 1
Views: 70

Re: Free: Manfrotto 3232 tilting monopod head

I use this head permanently attached to a column in my vertical macro setup. It needs strong tightening, yes, but then it can handle lots of weight, I've suspended a heavy RED cine camera from it without issues. Likely not the most useful for monopod field work but an useful part. I would take it if...
by Pau
Thu May 06, 2021 3:32 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Haze?
Replies: 22
Views: 339

Re: Haze?

I mainly shoot with continuous illumination with a Canon 7D and Wemacro (Micromate). I use EFSC and control both camera and Wemacro from the computer. To allow the camera shooting when LV is enabled at the computer (through Canon Utility) I need to activate LV at the camera too. With this configurat...
by Pau
Tue May 04, 2021 11:25 am
Forum: Photography Through the Microscope
Topic: Stereo Bramble Rust Lesion
Replies: 2
Views: 142

Re: Stereo Bramble Rust Lesion

Nice and interesting.

The stereo is very useful -and spectacular- in order to understand the subject shape
by Pau
Tue Apr 27, 2021 11:53 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Portulaca seeds
Replies: 5
Views: 263

Re: Portulaca seeds

.. Do the colours change completely if you rotate the seed relative to the lights or is each 'jigsaw piece' the same basic hue at all/most orientations? Thanks. Thanks Steve, They change but not very much. Later will try with a proper microscope rotatable stage. Your question spoiled me to take a f...
by Pau
Tue Apr 27, 2021 11:45 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Portulaca seeds
Replies: 5
Views: 263

Re: Portulaca seeds

Now another stereo pair with the Nikon CFI Plan 10/0.25 somewhat cropped, same setup but less diffused light
2021-04-27-20.10X stereo_CrossBR.jpg
by Pau
Tue Apr 27, 2021 10:47 am
Forum: Equipment Discussions
Topic: Epi DIC on Mitutoyos with a Nikon slider
Replies: 2
Views: 192

Re: Epi DIC on Mitutoyos with a Nikon slider

=D> =D>
Excellent results!
I assume that you have a proper epiilluminator with its polarizers, do you?
Would be nice to see the details of the whole R DIC setup
by Pau
Tue Apr 27, 2021 5:12 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Purslane (Portulaca oleracea) seeds
Replies: 20
Views: 2301

Re: Purslane (Portulaca oleracea) seeds

Nicola, thank you so much for posting it and for the seeds :D

I've posted some pictures here https://www.photomacrography.net/forum/ ... 23#p273323
by Pau
Tue Apr 27, 2021 5:11 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Portulaca seeds
Replies: 5
Views: 263

Portulaca seeds

Nicola was extremely kind sending me a small bag of Portulaca oleracea seeds, the awesome ones with colorful metallic luster he posted at https://www.photomacrography.net/forum/viewtopic.php?p=271602#p271602 They maintain its metallic aspect at all magnifications. I plan to grow some of them to see ...
by Pau
Mon Apr 26, 2021 1:16 am
Forum: Equipment Discussions
Topic: Wemacro Micromate questions
Replies: 19
Views: 500

Re: Wemacro Micromate questions

Lou, thanks for showing them. Lots of interesting stuff, not only wemacros. I love your busy table :D I see that you're using the original shaft coupler, nothing wrong here, just I think that mine was defective. William sent me several different models although I already had bought one that was work...
by Pau
Sun Apr 25, 2021 1:29 pm
Forum: Equipment Discussions
Topic: Wemacro Micromate questions
Replies: 19
Views: 500

Re: Wemacro Micromate questions

Lou, this is good info. What kind of microscope blocks do you drive? (conical or cylindrical fine focus knobs?) Do you use the original flexible shaft couplers? (a picture would be useful) I keep the back of the motor against the central column to ensure levelness of the horizontal support Some time...
by Pau
Sun Apr 25, 2021 9:34 am
Forum: Equipment Discussions
Topic: Wemacro Micromate questions
Replies: 19
Views: 500

Re: Wemacro Micromate questions

My issues are entirely centered on the stability of the system and the various areas wherein I get movement where there should be none. Even the horizontal axis is unstable because the large knob that holds the device to the vertical bar does not grip the device adequately to prevent movement up an...
by Pau
Sat Apr 24, 2021 11:56 am
Forum: Equipment Discussions
Topic: Wemacro Micromate questions
Replies: 19
Views: 500

Re: Wemacro Micromate questions

I have the MicroMate and don't like the focus knob coupler, so I've designed my own one: https://www.photomacrography.net/forum/viewtopic.php?p=232122#p232122 * (former discussions at http://www.photomacrography.net/forum/viewtopic.php?p=229466#p229466 ) I think that the original has some design fau...
by Pau
Fri Apr 23, 2021 1:20 am
Forum: Photography Through the Microscope
Topic: Euglenoid "skeleton"
Replies: 7
Views: 335

Re: Euglenoid "skeleton"

MarkSturtevant wrote:
Thu Apr 22, 2021 3:23 pm
But what are the sausage thingies inside? Maybe mitochondria?
No, mitochondria are much smaller (in most cases not visible with optical microscopy at least without staining).
I think they are paramylon bodies (polysaccharide reserves), very prominent in Euglenophyta

Mike, very interesting picture!
by Pau
Thu Apr 22, 2021 8:50 am
Forum: Equipment Discussions
Topic: Is it some kind of microscope?
Replies: 19
Views: 631

Re: Is it some kind of microscope?

I would qualify it as a custom arranged microscope: both magnification, resolution and main optics -the objective- are typical of microscopes. For Nikon Small World Competition people it also is: "The homemade microscope is a new and growing sector of the contest and we are excited to collect and ju...