Search found 411 matches

by Yawns
Tue Mar 31, 2020 6:56 am
Forum: Equipment Discussions
Topic: Zerene (Linux) on ARM processor...
Replies: 1
Views: 1184

Zerene (Linux) on ARM processor...

Just to confirm my suspicions ... before pulling out hair trying ...

Since Zerene (Linux version) was designed to work on Intel processors .. I suppose it is useless to try to make it work on a Raspberry PI 4B ... with ARM processor ...
I'm right ... am I not?

Thanks,
António
by Yawns
Tue Mar 24, 2020 6:33 am
Forum: Nature Photography -- Macro and Close-up
Topic: Ants copulating
Replies: 3
Views: 1466

I was amazed when I realized what it was ... This literally "fell" from the sky in front of me and at first I thought it was a bug in difficulty, but when I saw the spots on the wings I soon realized that they were ants ... here I have seen several "nuptial flights" and now and then the apartment wa...
by Yawns
Sun Mar 22, 2020 8:09 am
Forum: Nature Photography -- Macro and Close-up
Topic: Ants copulating
Replies: 3
Views: 1466

Ants copulating

Natural Light (no flashes) Oly 60mm macro + Kenko #5 Now this is my lucky day ... I was busy looking at a spider when this landed right before my eyes... copulating ants, queen and male ( I presume) ... (note they engage in the air during the nuptial flight... check wiki for more info https://en.wik...
by Yawns
Wed Feb 26, 2020 4:35 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Stacking with natural light... no experience..
Replies: 2
Views: 2081

Stacking with natural light... no experience..

I want to take the rig outside to the patio and shoot with natural light rather than artificial light ...flashes or leds if anyone tried it before and has some tips and advice.. they are most welcome. I have no clue how it works (if it works). I don't plan to shoot above 10x..(4x and 10x) I built th...
by Yawns
Wed Feb 26, 2020 4:22 pm
Forum: Equipment Discussions
Topic: Frame for MJKZZ mini rail (done)
Replies: 6
Views: 1933

I love that case! You're a master at this CAD stuff, it took me several hours to make a small cube with 3 holes. I'm going to make a very similar case for my 600x600mm optical breadboard. Not sure how much it would cost, these t-slots are unacceptably expensive in Australia. :oops: Thank you... alu...
by Yawns
Wed Feb 26, 2020 4:09 pm
Forum: Equipment Discussions
Topic: Frame for MJKZZ mini rail (done)
Replies: 6
Views: 1933

Smokedaddy wrote:Wow, very nice.
Thank you...
by Yawns
Tue Feb 18, 2020 5:52 pm
Forum: Equipment Discussions
Topic: Frame for MJKZZ mini rail (done)
Replies: 6
Views: 1933

Frame for MJKZZ mini rail (done)

It's done...the parts arrived and it is assembled.. https://live.staticflickr.com/65535/49512474083_0063ac04da_b.jpg Untitled2 by antonio caseiro , on Flickr https://live.staticflickr.com/65535/49513213302_c84f2dee19_b.jpg Untitled by antonio caseiro , on Flickr https://live.staticflickr.com/65535/4...
by Yawns
Fri Jan 24, 2020 4:36 pm
Forum: Equipment Discussions
Topic: LWD Optosigma objectives.
Replies: 26
Views: 1461

Thank you all for the inputs and the interesting discussion that developed... I'm looking for sometime now... (and I'm in Europe) On eBay rarely there are Mitutoyos located in Europe. (currently I only can find Seiwa and Motic (10X) .. "similar" objectives., for around 600 euros. No way... In the pa...
by Yawns
Thu Jan 23, 2020 7:06 am
Forum: Equipment Discussions
Topic: LWD Optosigma objectives.
Replies: 26
Views: 1461

Note, too, that the numerical apertures are small for a couple of the lenses. The 20x has NA 0.30 (more normal for a 10x); the 50x has NA 0.42. As we know, lower NA means lower resolution. --Chris S. I noticed that too, but I always thought it was a "normal" value for this type of long distance ins...
by Yawns
Thu Jan 23, 2020 6:54 am
Forum: Equipment Discussions
Topic: LWD Optosigma objectives.
Replies: 26
Views: 1461

Thanks .. yes I am also suspicious .. even because I can't find any other references to the lenses .. I only saw them because I went to their website to check the specifications of a pair of goniometers and a rotation stage of the brand I bought on eBay.
Thank you
by Yawns
Wed Jan 22, 2020 1:10 pm
Forum: Equipment Discussions
Topic: LWD Optosigma objectives.
Replies: 26
Views: 1461

LWD Optosigma objectives.

Does anyone have experience with these lenses? .. the price seems to be too good ... and I can't find any information / analysis / comment ... searches here on the forum do not return anything except posts where Optosigma material is referred to ... stages ... nothing about the lenses. https://europ...
by Yawns
Sun Jan 19, 2020 6:16 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Olympus m4/3.. pulling back the twin flash.
Replies: 4
Views: 1371

List of parts and current configuration It's no simple as it looks to get it well assembled... the right hand most fit ( I have small hands) the rods can't hurt the face etc...( I did not want to cut it shorter) https://live.staticflickr.com/65535/49408592542_1b8284b109_b.jpg oly01 by antonio caseir...
by Yawns
Sat Jan 18, 2020 8:54 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Olympus m4/3.. pulling back the twin flash.
Replies: 4
Views: 1371

Olympus m4/3.. pulling back the twin flash.

Finished this project... the basic idea was to pull back the flashes from the lens mouth and build a diffusor that does not invade the working distance. Now the flashes are like 4-5cm back and there's a good space from the flash light to the diffuser surface. I did some previous "projects"... https:...
by Yawns
Sat Nov 23, 2019 1:19 pm
Forum: Beginners Macro
Topic: Mounting Camera/Rail to Base
Replies: 11
Views: 5365

What's the rig on the right of the picture that is holding the specimen and is everything mounted to that table or just sitting on it? [/quote] The "Ring" was a "pre-diffuser" It' was permanent and screwed to the table... the insect / object would stand in the middle... then the lens would go insid...