Search found 1571 matches

by LordV
Sun Jan 22, 2017 8:46 am
Forum: General Discussion Forum and Community Announcements
Topic: "Photo Science", suggestions please!
Replies: 13
Views: 3419

Chris with the glycerol I was thinking of refraction using droplets of glycerol perhaps on a glass slide with a flower or something underneath. The refracted image appears in front of the image of the drop. In reverse bubbles in a glycerol mixture in a thin clear bottle or perhaps between two glass ...
by LordV
Sun Jan 22, 2017 12:10 am
Forum: General Discussion Forum and Community Announcements
Topic: "Photo Science", suggestions please!
Replies: 13
Views: 3419

Some thoughts. 1. Refractive properties of liquid in air and air in liquid using say glycerol 2. Making cross-eye stereograms 3. Rigging some kind of event trigger eg sound or optical. to take a photograph 4. If crocuses are in flower then doing a time lapse of an opening flower. A picked flower bud...
by LordV
Fri Jan 20, 2017 11:39 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Soap film interference colours take 3
Replies: 9
Views: 1412

Brian, I don't understand the technical aspects like Chris mentioned. However, without such understanding, for me these are just beautiful images to view. I can see (pun intended) why folks could get attracted to these images as they swirl and change with time. Sometimes what we think are the simpl...
by LordV
Fri Jan 20, 2017 5:07 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Soap film interference colours take 3
Replies: 9
Views: 1412

Soap films are interesting. You can show wave intereference, current flow (ionise the surfactant), electrostatic attraction (bend the film), measure the size of a soap molecule (from the steps in colours), surface tension, and more. The swirly colours thing, is interesting in that some people are s...
by LordV
Thu Jan 19, 2017 11:59 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Soap film interference colours take 3
Replies: 9
Views: 1412

Soap film interference colours take 3

In take 2 I solved the motion blur just using a higher shutter speed but the shots still had OOF areas due to the angle of the camera to the soap film needed to see the colours. With take 3 I added more glycerol to the soap mix and found the colour patterns stopped swirling around. This allowed me t...
by LordV
Mon Oct 24, 2016 11:32 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Attack of the zombie wasps
Replies: 1
Views: 1060

Attack of the zombie wasps

Well not quite but this drone wasp I rescued from drowning in a pot of water looked rather odd- it's eyes had largely lost their black colour. 5Dmk2/MPE-5/430 Ex flash. Brian v. https://c8.staticflickr.com/6/5450/30553113415_14608880c2_o.jpg https://c2.staticflickr.com/9/8624/30553113425_64bee43d4f_...
by LordV
Wed Mar 30, 2016 4:39 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Some flower bits shots
Replies: 4
Views: 982

rjlittlefield wrote:Very attractive!

On the technical side: how are you stepping focus for these things? I can't recall if you've gone mechanical, and if so, what with.

--Rik
Thanks Rik - Stepping it using the sawn through micrometer by hand. Approx 20micron steps.

Brian v.
by LordV
Tue Mar 29, 2016 10:56 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Some flower bits shots
Replies: 4
Views: 982

leonardturner wrote:Attractive set. Especially nice work on the kalanchoe; it's hard to get dimensionality in such a translucent subject.
Thanks for the comments Leonard. Lit by flash off to one side.
Brian v.
by LordV
Sun Mar 27, 2016 11:19 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Some flower bits shots
Replies: 4
Views: 982

Some flower bits shots

Some flower bit shots taken at 10X using my light table set up with a cheap 10X microscope objective. All shots focus stacked using zerene - around 20 to 50 shots used in the stacks. Brian v. Euphorbia flower anther https://farm2.staticflickr.com/1458/25924901045_484ee3365a_o.jpg Different Euphorbia...
by LordV
Sun Feb 21, 2016 12:50 am
Forum: Nature Photography -- Macro and Close-up
Topic: Madagascar part XXIV
Replies: 4
Views: 1446

Wonderful selection Paul
Brian v.
by LordV
Thu Feb 18, 2016 11:40 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Madagascar part XXIII
Replies: 2
Views: 874

Wonderful stuff Paul
Brian v.
by LordV
Tue Feb 16, 2016 11:38 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Madagascar part XXII
Replies: 2
Views: 966

Wonderful stuff Paul.
Amazing camouflage on the ant lion but I love the frog shot
Brian V.
by LordV
Sun Feb 14, 2016 11:58 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Lichens and stereos
Replies: 0
Views: 574

Lichens and stereos

lichens on a twig shots. All focus stacked using zerene. 5Dmk2/MPE-65/430Ex flash. Handheld Brian v. https://farm2.staticflickr.com/1576/24388542323_a3d245e5bb_o.jpg https://farm2.staticflickr.com/1518/24388542383_00fdaf0b87_o.jpg https://farm2.staticflickr.com/1627/24388542413_b7fd674e0c_o.jpg Cros...
by LordV
Sun Feb 14, 2016 11:33 pm
Forum: Nature Photography -- Macro and Close-up
Topic: unknown
Replies: 2
Views: 621

Interesting bug - looks like a leaf hopper to me. Cicadellidae
Brian V.
by LordV
Sun Feb 14, 2016 11:32 pm
Forum: Nature Photography -- Macro and Close-up
Topic: First insect 2016.
Replies: 1
Views: 693

Excellent series Predrag - great start to 2016
Brian v.