Search found 139 matches

by Tonikon
Thu Feb 25, 2021 10:31 pm
Forum: Equipment Exchange
Topic: For Sale: Zeiss Ph2 Neofluar 16x 0.40 160/- Phase contrast
Replies: 0
Views: 73

For Sale: Zeiss Ph2 Neofluar 16x 0.40 160/- Phase contrast

Hi everyone, I'd like to sell a Microscope Objective Zeiss Ph2 Neofluar 16x 0.40 160/- Phase contrast. It appears in very good cosmetic conditions. It also seems in very good optical conditions. Glass appears in very good order, without visible marks, scratches, blemishes, delamination or fungus. Un...
by Tonikon
Thu Feb 25, 2021 10:27 pm
Forum: Equipment Exchange
Topic: For Sale: Leitz C Pl Oel 160x 1.40 ∞/0 Infinity corrected Oil immersion.
Replies: 0
Views: 63

For Sale: Leitz C Pl Oel 160x 1.40 ∞/0 Infinity corrected Oil immersion.

Hi everyone, I'd like to sell a Microscope Objective Leitz C Pl Oel 160x 1.40 ∞/0 Infinity corrected Oil immersion. It appears in very good cosmetic conditions. It also seems in very good optical conditions. Glass appears in very good order, without visible marks, scratches, blemishes, delamination ...
by Tonikon
Wed Feb 17, 2021 1:26 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Last survivor of the great flood
Replies: 8
Views: 295

Re: Last survivor of the great flood

I try to have my say ... it looks like a young earwig...Dermaptera are hemimetabolous insects and the young seem like little adults...
by Tonikon
Fri Feb 12, 2021 9:56 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cicada ovipositor
Replies: 10
Views: 581

Re: Cicada ovipositor

Thank you for your appreciation!
by Tonikon
Sun Feb 07, 2021 7:21 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cicada ovipositor
Replies: 10
Views: 581

Re: Cicada ovipositor

Recent research has also shown that the apex of the Cicada ovipositor is strongly reinforced by numerous inorganic elements (P, Ca, Si, Mg, Na, Fe, Zn, Mn and others) ... an evolutive solution that rivals with best chromium-vanadium tools!!!
by Tonikon
Sat Feb 06, 2021 2:41 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cicada ovipositor
Replies: 10
Views: 581

Re: Cicada ovipositor

rjlittlefield wrote:
Fri Feb 05, 2021 10:32 pm
That looks exactly like the mechanism used by bee & wasp stingers to penetrate hide. It may be the same anatomy, just tweaked a little.

--Rik
Yes, Rik..this is a textbook case of convergent evolution!
by Tonikon
Fri Feb 05, 2021 9:33 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cicada ovipositor
Replies: 10
Views: 581

Re: Cicada ovipositor

... and it works like an electric jigsaw, driven by specific muscles ...
by Tonikon
Fri Feb 05, 2021 10:38 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cicada ovipositor
Replies: 10
Views: 581

Cicada ovipositor

Hi everyone, this is not the spearhead of a proud Maasai warrior, but the ovipositor of a small Cicada. Using this toothed spearhead, the female cicada cuts a slit in woody tissue of a tree or shrub and provide a conduit for eggs to move from the reproductive tract into the wound of the branch. The ...
by Tonikon
Fri Feb 05, 2021 10:24 am
Forum: Photography Through the Microscope
Topic: Mulberry Stem Section (prepared silde)
Replies: 0
Views: 346

Mulberry Stem Section (prepared silde)

Hi everyone, today nothing exciting: just a Mulberry stem section (from a prepared slide) photographed by the old & fat (but still good) Leitz Apo 40 0.95 (the one with the correction collar). Apart from its absolutely non-existent work distance (0.09mm, even less than many "oil" objectives!), its "...
by Tonikon
Fri Feb 05, 2021 10:17 am
Forum: Photography Through the Microscope
Topic: Pyrrosia lanceolata
Replies: 4
Views: 347

Re: Pyrrosia lanceolata

Really interesting! They look like stained glass art objects.
by Tonikon
Mon Feb 01, 2021 10:50 pm
Forum: Photography Through the Microscope
Topic: Administrators Appreciation Award Winners for February 2021
Replies: 1
Views: 400

Re: Administrators Appreciation Award Winners for February 2021

Dear Rik and dear friends, I am really very happy and proud that Photomacrography has chosen my image for the frontpage of the website. I am still a beginner in transmitted light microscope photography and this recognition gives me a lot of enthusiasm. I hope to continue contributing to this importa...
by Tonikon
Thu Jan 28, 2021 10:42 am
Forum: Photography Through the Microscope
Topic: Lacrymaria olor
Replies: 8
Views: 1244

Re: Lacrymaria olor

...what an incredible organism !!! just one cell, but with an impressive neck! Bravo por Louis Carlos =D>
by Tonikon
Mon Jan 25, 2021 10:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Stink Bug.
Replies: 6
Views: 684

Re: Stink Bug.

Another incredible case of camouflage...
by Tonikon
Sun Jan 24, 2021 10:54 pm
Forum: Administrator's Appreciation Gallery...Photography Through the Microscope
Topic: ...two little babies on the way...
Replies: 6
Views: 1597

Re: ...two little babies on the way...

Very nice stuff! I was going to ask the same question about getting the eyes "right" after inverting the brightness channel. Again a very nice technique that I should like to try one day. Hi Mark, the eyes "right" came by accident ... with Photoshop you can mix the layers together (after duplicatin...