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Charles Krebs
Joined: 01 Aug 2006
Posts: 4072
Location: Issaquah, WA USA
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 Posted: Tue Apr 17, 2012 3:50 pm Post subject: Vinca minor. (Stereo only) |
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I've been really tied up setting up a new/old microscope and I'm finally getting to the (not all that serious yet) "testing" phase. I grabbed a Vinca minor blossom to play around with. I did a few quick shots. What I found interesting is how, while they did not really "grab" me as 2-dimension images the stereo pairs were quite fun to look at. So with apologies to those who can't "see" these... here are a few (no retouching... straight out of Zerene).
(BTW... this flower is structurally very unusual. Rik did a more understandable exploration a couple years ago:
http://www.photomacrography.net/forum/viewtopic.php?t=2356 )
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rjlittlefield
Site Admin
Joined: 01 Aug 2006
Posts: 12577
Location: Richland, Washington State, USA
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| Posted: Tue Apr 17, 2012 4:13 pm Post subject: |
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What fun!  
--Rik |
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Jacek
Joined: 02 Oct 2011
Posts: 893
Location: Poland
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| Posted: Wed Apr 18, 2012 12:25 am Post subject: |
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| beautiful, what is the need to view stereo pairs ? |
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Charles Krebs
Joined: 01 Aug 2006
Posts: 4072
Location: Issaquah, WA USA
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| Posted: Wed Apr 18, 2012 12:07 pm Post subject: |
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Jacek,
| Quote: | | beautiful, what is the need to view stereo pairs ? |
These are "cross-eyed" pairs. The image on the left is the one that needs to be seen by the right eye, and the image on the right is the one that needs to be seen by the left eye. The nice thing about "cross-eyed pairs" is that many (most?) people can learn to see the stereo effect by "free-viewing", that is, no devices are needed. You need to cross your eyes so that each eye sees the appropriate image. Initially it takes some practice but once you learn the technique it comes pretty easily. (Although there are people that are not able to do it).
Sometimes it helps to stare at the image on the screen, and then hold a pencil or your finger up at the center between the image pairs. Slowly move the pencil or finger toward your nose while trying to keep it in view with both eyes. This causes the eyes to cross. Then try to "lock" your eyes in that position while slowly diverting your attention to the screen image. With practice the images should "fuse" into a clear sharp stereo view in the middle. (Toward the outside, in your peripheral vision on either side, you will see a "blurred" non-stereo image. You learn to ignore that quickly).
If you simply cannot do it by such free-viewing" you may have some luck with a simple paper "device" called an "Elliot viewer".
See "X VIEW TOOL" about 1/3 of the way down on this page:
http://www.kiwizone.org/sterea/stereoview.htm#elliot
also diagram at bottom of page 549 here:
http://tinyurl.com/7eon8th
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Mitch640
Joined: 15 Aug 2010
Posts: 2137
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| Posted: Wed Apr 18, 2012 1:42 pm Post subject: |
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Beautiful.
I have gotten so use to these that once I see the first one, I can scroll down the page and not lose it in between pics.  |
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Ferry
Joined: 18 Nov 2009
Posts: 192
Location: Netherlands
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pwnell
Joined: 18 Dec 2009
Posts: 551
Location: Surrey, Canada
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| Posted: Fri Apr 20, 2012 10:42 am Post subject: |
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| Beautiful but it gives me a headache looking too long like that! |
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