Golden tortoise beetle

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Ultima_Gaina
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Joined: Sat Jan 28, 2017 11:19 pm

Golden tortoise beetle

Post by Ultima_Gaina »

Image

ChrisR
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Post by ChrisR »

I'd love to see this a bit bigger, would that be possible?

Even our forum limits allow it, about 2x if you don't mind cropping some of the black.
Chris R

Lou Jost
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Post by Lou Jost »

Very nice. This is a challenging beetle with lots of potential for glare, yet you have no specular reflections at all.

Ultima_Gaina
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Post by Ultima_Gaina »

ChrisR wrote:I'd love to see this a bit bigger, would that be possible?

Even our forum limits allow it, about 2x if you don't mind cropping some of the black.

Here you go: twice the size, slightly cropped:
Image

Lou Jost wrote:Very nice. This is a challenging beetle with lots of potential for glare, yet you have no specular reflections at all.
Thanks! I still wonder if there is a way to eliminate the reflection of the black flocking, wrapped around the objective.
Last edited by Ultima_Gaina on Mon May 29, 2017 10:02 am, edited 1 time in total.

Ultima_Gaina
Posts: 108
Joined: Sat Jan 28, 2017 11:19 pm

Post by Ultima_Gaina »

And here is a frontal view of the same goldbug:

Image

Ultima_Gaina
Posts: 108
Joined: Sat Jan 28, 2017 11:19 pm

Post by Ultima_Gaina »

ChrisR wrote:I'd love to see this a bit bigger, would that be possible?

Even our forum limits allow it, about 2x if you don't mind cropping some of the black.
... and here is a 100% zoom on the dotted pattern above the head. We can also observe the scales on that cool, transparent, tortoise like, protective shield.
Image

rjlittlefield
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Post by rjlittlefield »

Ultima_Gaina wrote:I still wonder if there is a way to eliminate the reflection of the black flocking, wrapped around the objective.
Are you looking at the "black hole"? If so, then be aware that's not the flocking, it's the inside of the camera, seen through the front of the lens. The only way to eliminate that is with some sort of axial illumination using a half-silvered mirror or the equivalent. At low magnification, you can get away shooting through a sheet of glass, with illumination bounced off the glass. See for example the illumination system used at http://www.photomacrography.net/forum/v ... hp?t=15820 .

--Rik

Ultima_Gaina
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Joined: Sat Jan 28, 2017 11:19 pm

Post by Ultima_Gaina »

This must be its reproductive organ.

Image

I had two of these beetles in a jar. To my surprise, despite being in captivity, I found them in a copulatory position.
I carefully tried to release them from the penis captivus situation, but I'm not sure if the organ really remained intact after extraction.
Last edited by Ultima_Gaina on Mon May 29, 2017 3:37 pm, edited 1 time in total.

Ultima_Gaina
Posts: 108
Joined: Sat Jan 28, 2017 11:19 pm

Post by Ultima_Gaina »

rjlittlefield wrote:
Ultima_Gaina wrote:I still wonder if there is a way to eliminate the reflection of the black flocking, wrapped around the objective.
Are you looking at the "black hole"? If so, then be aware that's not the flocking, it's the inside of the camera, seen through the front of the lens. The only way to eliminate that is with some sort of axial illumination using a half-silvered mirror or the equivalent. At low magnification, you can get away shooting through a sheet of glass, with illumination bounced off the glass. See for example the illumination system used at http://www.photomacrography.net/forum/v ... hp?t=15820 .

--Rik
Thanks Rik, this is very interresting but rather complicated to build. I guess I'll survive with the "black hole", for a while :wink:

Ultima_Gaina
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Joined: Sat Jan 28, 2017 11:19 pm

Post by Ultima_Gaina »

... and a 10x magnification, detailing the eyes behind the transparent edge of the shield:


<---------------------------------------------------2.2mm--------------------------------------------------------------->
Image

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