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10/07/2004 12:04:57 AM · #26 |
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10/07/2004 12:37:16 AM · #27 |
I lowered the brightness and contrast and got this. Clearly does show that those 2 are in fact the same shade. Or at least closer than it looks in the original. Very good one. |
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10/07/2004 01:11:48 AM · #28 |
| An even easier way to check is just to select the color in one square and paint a line to the other square. (Or check the color values in photoshop, which someone already said they did.) |
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10/07/2004 01:59:50 AM · #29 |
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10/07/2004 05:10:14 AM · #30 |
This is highly appropriate to those thinking about frames - more specifically, the impact of a white frame or of a black frame for your images. A white frame will appear to darken your picture, and black one to lighten it. God only knows what the viual impact of coloured frames actually is :-)
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10/07/2004 06:44:42 AM · #31 |
wow, I really like this circle illusion
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10/07/2004 07:06:49 AM · #32 |
Originally posted by mk:
An even easier way to check is just to select the color in one square and paint a line to the other square. (Or check the color values in photoshop, which someone already said they did.) |
Only easier if you actually HAVE an editing program that does that. I still don't have any editing software that does more than brightness, contrast, and colors. |
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10/07/2004 08:24:16 AM · #33 |
Originally posted by jonpink:
No doubt this has been around for years, but i only saw it a few weeks ago. Even put it into photoshop and eye dropped it to make sure :D
Squares A and B are exactly the same shade of grey
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Very cool. And a great demonstration of why Adobe Gamma's a complete waste of time too... From the linked explaination
As with many so-called illusions, this effect really demonstrates the success rather than the failure of the visual system. The visual system is not very good at being a physical light meter, but that is not its purpose. The important task is to break the image information down into meaningful components, and thereby perceive the nature of the objects in view.
Message edited by author 2004-10-07 08:25:08. |
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10/07/2004 08:40:46 AM · #34 |
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10/07/2004 10:46:20 AM · #35 |
How about this DPC ribbon-winner
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10/07/2004 10:52:34 AM · #36 |
Originally posted by Gordon:
As with many so-called illusions, this effect really demonstrates the success rather than the failure of the visual system. The visual system is not very good at being a physical light meter, but that is not its purpose. The important task is to break the image information down into meaningful components, and thereby perceive the nature of the objects in view. |
Very interesting point...thanks for posting that as it really shifts the paradigm within which one makes and views photographs... |
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10/07/2004 12:05:31 PM · #37 |
Here's a link to a quick visual proof of the illusion posted here:
//www.unoriginal.co.uk/optical1_9b.html |
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10/07/2004 12:45:24 PM · #38 |
when I isolate the "proof" bars, they still apeear lighter in the middle. I need more proof. it still seems like a hoax.
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10/07/2004 12:47:04 PM · #39 |
Originally posted by blindjustice:
when I isolate the "proof" bars, they still apeear lighter in the middle. I need more proof. it still seems like a hoax. |
The proof is right in front of you - pull it up in your favourite editor, sample the colours. They are the same.
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10/07/2004 12:47:24 PM · #40 |
Originally posted by blindjustice:
when I isolate the "proof" bars, they still apeear lighter in the middle. I need more proof. it still seems like a hoax. |
Don't you have "Paint"? If so, save the image, open it in paint and remove everything but the bars and the two squares... |
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10/07/2004 12:49:28 PM · #41 |
| ok I am convinced. I just had to stare at a center point. |
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10/07/2004 12:50:26 PM · #42 |
Here's the cropped version of the proof image...unedited, of course...so it's fairly small!
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