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Thread: optical illusion

  1. #1

    Default optical illusion



    notice anything ?

    1 and 2 is of the same shade of gray, you can download the photos and test it out under photoshop.....
    36frames Wedding Photography - http://www.36frames.com
    rueyloon - http://www.rueyloon.com

  2. #2
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    Default

    cool
    "I'm... dreaming... of a wide... angle~
    Just like the ones I used to know~"

  3. #3

    Default

    OMG..
    I can't believe it!

    After this, I don't trust what I see already...

  4. #4

    Default

    how to test?
    550D|17-40|70-200 4 IS|100 2.8|50 1.8|ST-E2|580EX|190proB 486RC2

  5. #5

    Default

    Originally posted by sinner1974
    how to test?
    either use the "dropper" to check the values of the RGB

    or just do a cut and paste,

    cut out pieces of A & B and put them together...
    36frames Wedding Photography - http://www.36frames.com
    rueyloon - http://www.rueyloon.com

  6. #6

  7. #7

  8. #8
    Midnight
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    Default

    Very, very interesting... this is truly one of the most amazing optical illusion figures I've ever seen. So much for our eyes' built-in color balance/curves functions....

  9. #9
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    Default

    i just had to do it for myself... still have trouble believing my eyes when i dragged square A next to B in PS...

  10. #10
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    Default

    *needs new glasses* die liao... cannot see.. eyes failing already. *sigh*

  11. #11

    Default

    Nice. Another way to see that they are the same without using photoshop is to use your hand with your fingers curled up into a tube, put it over the A square to isolate and look at it. Do the same for the B square.

  12. #12
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    Default Re: optical illusion

    Originally posted by rueyloon


    notice anything ?

    1 and 2 is of the same shade of gray, you can download the photos and test it out under photoshop.....
    Wow, at first I thought it was a typo comparing 1 and 2 (or A and B).

    Truly amazing!

    Do you know of any website that have more of these optical illusions?

    Thx,
    Jeffery

  13. #13
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    Default

    You can also print it and then use a scissor to cut both A & B squares out and then match them.

  14. #14
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    Default ....save ink!!!

    cut two holes for the two spot on a paper....then mask it over the scren/monitor.....can see its the same

  15. #15

    Default

    no leh... is it my monitor not calibrated properly or what.... even if i cover the squares individually, they still look diff colour leh....
    also, if use PS, it indicates that they squares have diff amount of RGB or CMYK leh...

  16. #16

    Default

    paiseh... i neber read instructions...

    i was comparing between other squares and not square A n B...

  17. #17

    Default



    I feel faint already!
    Do you have the original URL to this? Interested to check out more.

  18. #18
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    Default tsk tsk...

    Hi

    tsk tsk tsk..........RL, this image is copyrighted - u should have at least credited the university professor or link the image from his website instead of hosting it from your own site. His original site also contain the explanation for the illusion

    Here's the original link.

    The explanation for the illusion can be found here

    anyway this image was brought up in 2 separate threads (one of which unfortunately can no longer be viewed ) in the Photo.net forums last month.

    Here's one of them:

    http://www.photo.net/bboard/q-and-a-...?msg_id=003pQU

    It's interesting to note the different cultures of the 2 forums - in Photo.net, both threads spawn extensive discussions in relation to the different ways of metering and deriving correct exposures in light of the deception contained in the image.

    Over here in CS, the topic is listed under Banal Talk, and the discussion is more "fun" and a tad less serious, with no attempt to relate the illusion to actual photography
    David Teo
    View my work and blog at http://www.5stonesphoto.com/blog

  19. #19
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    Default

    this is amazing...

  20. #20

    Default Re: tsk tsk...

    Originally posted by Red Dawn
    Hi

    tsk tsk tsk..........RL, this image is copyrighted - u should have at least credited the university professor or link the image from his website instead of hosting it from your own site. His original site also contain the explanation for the illusion

    sry to the owner :|

    I saw this from a Mac forum, didn't have another infomation on it.
    36frames Wedding Photography - http://www.36frames.com
    rueyloon - http://www.rueyloon.com

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