Radiolarians

[75RR]

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This is from another of MicroBob's slides.

Unfortunately I managed to wipe the writing off the slide when I cleaned it. Only thing I could make out was the number 30

Zeiss Planapo 63x/1.4, DIC , stacked in Photoshop - camera set to monotone

[tlansing]

Excellent photos!

[Javier]

Beauriful!

The monochrome setting was a wonderful choice, imho.

[75RR]

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Many thanks tlansing and Javier

Here is a 8 min video on Ernst Haeckel's drawings of Radiolarians: https://www.youtube.com/watch?v=tl_onFMjJWA

[MicroBob]

Hi Glen,
nice images! Are these stacked DIC images? The spikes of the radiolaria are used for identification as far as I know, probably quite a special art.
In the german forum an interesting image editing method was shown recently. I like the way the transparent structures are rendered in the last image: https://www.mikroskopie-forum.de/index. ... ic=41955.0

Bob

[75RR]

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Thanks MicroBob,

yes images are stacked, numbers on the images indicate how many images used.

In the last one I think it comes to 148, they are very 3D and the depth of field of the 63x is rather shallow!

Those are great images you linked to. I will see if I can improve on what I have done.

I wonder if better images can be obtained with my 40x/1.0 oel

Can you remember where the Radiolarians are from?

[MicroBob]

Before the invention of image stacking radiolaria have been seen as the arch enemy of the micro photograph! We are still not friends today!

Bob

[Lomonaut]

Beauriful!

The monochrome setting was a wonderful choice, imho.

Yes, it almost makes it like scanning electron microscope images or Haeckel drawings.

Great images!

[Hobbyst46]

I wonder if better images can be obtained with my 40x/1.0 oel

If 40x, why not a dry 40x ? the ornamentation pattern of the radiolarian does not call for high resolution, so perhaps the 40x0.65 ? or is it because the 40x1.0 is a planapo ? yet the images are grayscale, so ?...
P.S. I am asking out of similar concerns about my specimens...

[Wes]

Zeiss Planapo 63x/1.4, DIC

I find it impressive that you successfully used this particular objective given its ridiculously small working distance on an object as difficult as radiolarians.

Very nice images!

[Francisco]

Very nice

[75RR]

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Thanks Lomonaut, Hobbyst46, Wes and Francisco

If 40x, why not a dry 40x ?

Good point on the B/W + using dry 40x. Will have a go

I find it impressive that you successfully used this particular objective given its ridiculously small working distance on an object as difficult as radiolarians.

In hindsight I think I was just asking for trouble ...