three spiders

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ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

three spiders

#1 Post by ADi » Fri May 26, 2023 10:17 am

Hello everyone,

Enclosed are a few photos of the various spiders:

2x (without abdomen)
Image

2.5x (little house spider)
Image

10x (feather hair of Tegenaria)
Image

Best, ADi
Last edited by ADi on Sat May 27, 2023 7:26 am, edited 1 time in total.

einman
Posts: 1508
Joined: Tue Feb 24, 2015 1:03 am

Re: four spiders

#2 Post by einman » Fri May 26, 2023 2:06 pm

Any image manipulation other than typical stacking procedure?

ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

Re: four spiders

#3 Post by ADi » Fri May 26, 2023 2:11 pm

Hi,
As little as possible, but as much as necessary :-)
The last one a little more, because of the reflections :-(
Best, ADi

einman
Posts: 1508
Joined: Tue Feb 24, 2015 1:03 am

Re: four spiders

#4 Post by einman » Fri May 26, 2023 11:04 pm

The last one look liked a "created" image via computer interpolation rather than actual photo. No doubt artifacts of the software used to touch it up.

ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

Re: four spiders

#5 Post by ADi » Sat May 27, 2023 7:26 am

einman wrote:
Fri May 26, 2023 11:04 pm
The last one look liked a "created" image via computer interpolation rather than actual photo. No doubt artifacts of the software used to touch it up.
Hi,
I see that you don't like the last photo and it even bothers you.
I don't want to upset anyone here with my pictures, so I have just removed it.
Sorry, but I've only been on the forum for two weeks and don't know the preferences of the users yet.
Best, ADi

Chas
Posts: 422
Joined: Tue Jan 19, 2021 3:11 pm

Re: three spiders

#6 Post by Chas » Sat May 27, 2023 1:04 pm

ADi, please dont delete anything... I like to to see (other peoples!) stacking artefacts.
The only thing that bothers me is that your images are jolly nearly an order of magnitude sharper than mine :lol:
(This doesnt honestly-speaking bother me as I really enjoy stacking and the view that I get at the end).
It might be fun to see a side by side (cross-eyed) 3D view of, say, the little house spider?

ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

Re: three spiders

#7 Post by ADi » Sat May 27, 2023 3:35 pm

Chas wrote:
Sat May 27, 2023 1:04 pm
ADi, please dont delete anything... I like to to see (other peoples!) stacking artefacts.
The only thing that bothers me is that your images are jolly nearly an order of magnitude sharper than mine :lol:
(This doesnt honestly-speaking bother me as I really enjoy stacking and the view that I get at the end).
It might be fun to see a side by side (cross-eyed) 3D view of, say, the little house spider?
I would like to give pleasure with my photos, but not to upset anyone :-)

I can 3D only in red/cyan e.g. radiolarians.
https://www.microbehunter.com/microscop ... =6&t=18410

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iconoclastica
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Re: three spiders

#8 Post by iconoclastica » Sat May 27, 2023 4:59 pm

ADi wrote:
Sat May 27, 2023 3:35 pm
I can 3D only in red/cyan e.g. radiolarians.
https://www.microbehunter.com/microscop ... =6&t=18410
which have a number of advantages over stereo pairs anyway...

ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

Re: three spiders

#9 Post by ADi » Sat May 27, 2023 6:15 pm

which have a number of advantages over stereo pairs anyway...
especially for me because I can not cross my eyes :-(

Chas
Posts: 422
Joined: Tue Jan 19, 2021 3:11 pm

Re: three spiders

#10 Post by Chas » Sun May 28, 2023 6:14 pm

To see the stereo in side by side images the level of eye-crossing required is not much different to reading a book or looking at the screen of a mobile phone, 8 or 10 inches from your nose.
(it is not the bonkers eye-crossing of the school playground).
Berezin test image.jpg
Berezin test image.jpg (7.06 KiB) Viewed 1331 times
Hold your mobile phone underneath the image and slowly bring it towards your face whilst still looking at the phone. Every so often divert your gaze gently at the computer screen behind the phone.... At some point the two images will form three images... and the middle image will be the stereo one (with the red dot closest to you, and the yellow dot furthest away).

One confusing problem is that you have to have/get your head level so that the circles overlay properly.

I do understand that it is not possible for some.


I have just had a go with this image and on my monitor, which is about two feet wide; the third middle image occurs when my mobile phone is 10 inches in front of my nose. when I am sitting about 2' from the screen.
The further you are from the computer screen the less converging you need
Last edited by Chas on Sun May 28, 2023 9:21 pm, edited 2 times in total.

Chas
Posts: 422
Joined: Tue Jan 19, 2021 3:11 pm

Re: three spiders

#11 Post by Chas » Sun May 28, 2023 7:36 pm

3d train 640.jpg
3d train 640.jpg (13.19 KiB) Viewed 1296 times


I hadnt thought about this before, but the closer the centres of the two images, the less ones eyes need to converge; so the half-sized pair below might be easier:
3d train 320.jpg
3d train 320.jpg (7.42 KiB) Viewed 1244 times

einman
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Joined: Tue Feb 24, 2015 1:03 am

Re: four spiders

#12 Post by einman » Mon May 29, 2023 3:39 am

ADi wrote:
Sat May 27, 2023 7:26 am
einman wrote:
Fri May 26, 2023 11:04 pm
The last one look liked a "created" image via computer interpolation rather than actual photo. No doubt artifacts of the software used to touch it up.
Hi,
I see that you don't like the last photo and it even bothers you.
I don't want to upset anyone here with my pictures, so I have just removed it.
Sorry, but I've only been on the forum for two weeks and don't know the preferences of the users yet.
Best, ADi
No nO it does not bother me rather I am interested in your techniques and the photos are awesome. Just questioning the differences in appearance.

ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

Re: three spiders

#13 Post by ADi » Mon May 29, 2023 9:14 am

One confusing problem is that you have to have/get your head level so that the circles overlay properly. I do understand that it is not possible for some.
yes, that is the problem :-(

ADi
Posts: 301
Joined: Fri May 05, 2023 4:05 pm

Re: three spiders

#14 Post by ADi » Mon May 29, 2023 9:18 am

No nO it does not bother me rather I am interested in your techniques and the photos are awesome. Just questioning the differences in appearance.
Sorry, I have misunderstood. But I will know for the future :-)

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