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[personal profile] fflo
Sadly, I'm a bit out of focus myself, and didn't notice that my picture of today's tie is too.  And I've already taken it off.  So my Day of the Dead tie is maybe not at its best this year:




Can you even see the skulls?  Or the one on the left side, anyhow?

Sadly, I'm behind on the ol' friends page again.  Feels like I'm a bad lj citizen.  But I'm still providing "content", as we so boringly call it.

Evals are over at work.  Next up is some hiring, first from within.  Today's mission: to come up with questions to ask candidates for my old job.  Same questions for all the candidates.

It's cold AND rainy.  I did open the window for the cats for a little.  And went out in the drizzle to fill the bird feeder, cuz some little fella was on the bottom rung poking around for a snack, and I felt bad for, er, them.  It?  Its finchiness?

Okay, so long as I'm out of focus, and can thus easily slip into seeing magic eye action, here's a seasonal one for y'all.  I promise I'll catch up on friends' posts soon.  Click on it for bigger in a new tab!


Date: Oct. 28th, 2020 01:57 am (UTC)
From: [identity profile] peteralway.livejournal.com
Trimensional. I wonder if this will post:

Date: Oct. 28th, 2020 11:03 pm (UTC)
From: [identity profile] fflo.livejournal.com
It did! I see 4 moons, when I relax. :D

Date: Oct. 29th, 2020 02:14 am (UTC)
From: [identity profile] peteralway.livejournal.com
The idea is that one of the two inner moons should be proper 3-d, depending on your viewing method. The other will be a weird concave moon, and of course the outer two are trash images each generated by one eye only.

Date: Oct. 29th, 2020 10:34 pm (UTC)
From: [identity profile] fflo.livejournal.com
Does how strong one's eyes are relative to each other enter into the experience?

Date: Oct. 30th, 2020 12:30 am (UTC)
From: [identity profile] peteralway.livejournal.com
If your eyeballs are cooperative enough to do the Magic Eye thing, it should work. There are two ways people do stereo viewing without an actual stereoscope/viewmaster/3-d glasses. Either the distant-object method, where your eyes relax, and instead of pointing inward, just point forward, like looking at a distant object. That's actually the standard for stereoscopes/viewmaster, where a lens allows your eyes to focus for a distant object while they point for a distant object. Left eye sees left image, right eye sees right image. Your Magic Eye image works that way, as do the center and right images of my moon photos.

The other method is the cross-eyed technique, where your eyes point at an imaginary object between you and the image. Right eye sees left image, left eye sees right image. That's what works with the left and center images of my moon photos.

Some people find one method easier, some find the other easier. Weirdly, I used to naturally do the distant-object method, but recently I've found I default to the cross-eyed method.

As far as relative strengths of eyes, often people with mismatched vision don't "fuse" the images from both eyes. The ability to see in 3-d has to develop at a very young age. People whose vision is mismatched and not corrected within a couple years of birth never develop binocular vision. Roughly 10% of people (including a commenter below) don't have stereoscopic vision, either due to a visual mismatch or simply being blind in one eye.

Some people claim to have gained stereo depth perception as adults, but it's not clear if that's something that works for many people.

Date: Oct. 28th, 2020 08:35 am (UTC)
From: [identity profile] poliphilo.livejournal.com
I love those magic eye pictures!

Date: Oct. 29th, 2020 11:35 pm (UTC)
ext_8703: Wing, Eye, Heart (blackhat)
From: [identity profile] elainegrey.livejournal.com
My left eye does not play well with my right eye, so no magic pictures for me. 8( Also no depth of field or stereo vision.
fflo: (Default)
fflo

Hello.

CURRENTLY FEATURING
the
Postcard of the Day

(a feature involving a postcard on a day)

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For another postcard thing, see
my old postcard poems tumblr or
its handy archive.

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I'm currently double-posting here & at livejournal. Add me and let me know who you are, and we can read each other's protected posts.

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"What was once thought cannot be unthought."

-- Möbius, The Physicists

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