Comments on: Unbelievable Photoshop CS3 Illusion

By: pippin

pippin — Tue, 31 Jan 2012 19:02:03 +0000

Actually they are not the same. If you choose save for web in any version of photoshop you’re going to get the 2up or 4up depending on your settings there versions. Meaning you get 2 versions 1-original and 1-optimized for web. In the 4up you get the original, optimized, gif and jpg versions. Each version has a different resolution hence the reason for the so called illusion. It really isn’t an illusion though its a real difference because the resolutions are different which causes them to look different. Also if you put any identical pictures side by side they will look slightly different due to the angles. However that IS a true optical illusion because of the angles.

By: kyle

kyle — Fri, 27 May 2011 09:32:07 +0000

Hi! I am here to share some of my thoughts on this illusion. i think i understands how this illusion might work, (both photos are the same if u look at their perspectives) there is this “thin white line” that is used to segregate the photos,is used as a negative space. when you look at both photos together, your brain compares the angle the building is slanting to the negative space, as perceived by your brain as straight. eg. the brains register the lines as “/ l” on the left image and “l /” on the right. The brain then recognize image on the right being Slanted. i hope that helps! pardon me for my Grammar =D

By: marcy

marcy — Mon, 25 Apr 2011 14:30:47 +0000

if you move to the left then you will see that both buildings seems to lean at the exact angle

By: Amelia

Amelia — Wed, 25 Aug 2010 23:10:17 +0000

Ashleigh has every right to correct the grammar of this piece, just as the author has every right to ignore the advice, but he obviously did not, since the mistakes have been fixed. Ashleigh was simply suggesting ways to make the post better. If it is going to be in English, it should be in correct English. If I was translating a post into another language I would try to take the time to make sure that my grammar and phrasing were correct and would welcome a native speaker’s input.

By: Teco

Teco — Sat, 20 Mar 2010 23:03:34 +0000

Believe me, both pictures are not identical, they are THE SAME picture. 100%
As I explained in the text, what photoshop does when you invoke the “save for web” dialog is present you 2 versions of the same image, on the left the original one, on the right an optimized version for the web, that means lower resolution, but BOTH images are the same image.
So those who complaint that they are not, that means you are getting the optical ilusion!
Teco (Pablo Salto-Weis)

By: Soren

Soren — Sat, 13 Feb 2010 05:01:34 +0000

They aren’t perfectly identical. I just checked it out – one’s flattened a bit, or have the sides cut. Check the lower right corner, the thing in front of the building – it’s obviously larger on the left.

By: someone

someone — Mon, 10 Aug 2009 17:54:13 +0000

uhh…. wot?

By: cjfoisaebsv hjkc v

cjfoisaebsv hjkc v — Mon, 15 Jun 2009 01:46:16 +0000

lol just go crossied

By: Anonymous

Anonymous — Mon, 18 May 2009 13:24:00 +0000

just go cross eyed and cross them over.

By: BUH

BUH — Mon, 20 Apr 2009 00:04:00 +0000

crazy one!!!! cool!

By: jstalmaster

jstalmaster — Wed, 21 Jan 2009 22:44:00 +0000

Eh no. I think it has to do with the optical line that the cuts off the left side of the left picture makes our brain believe that its pretty straight. Now when you duplicate it and then put them next to one another it adds more angles kind of “opticly” (cant spell, nor do i really know what im talking about, just taking an educated guess) pushing the second building over. I’m sending a similar one that I made by googling towers. Not as good as this but it does KIND OF look different. Another 10 miniutes of work wasted.

By: Professor

Professor — Wed, 02 Jan 2008 02:57:00 +0000

Ok i did an experiment.

I put the pictures on Word and cut them up and rearranged them so I had 2 ORIGINALS side by side. Then I put 2 of the OPTIMISED FOR WEB ones side by side.

And whaddya know? they looked just as different from each other as the examples above. Even though they were the same version.

So that means that THE ONLY REASON THEY LOOK DIFFERENT IS BECAUSE THEY ARE NEXT TO EACH OTHER, not because they are actually different in any way.

must be a perspective thing.

By: Anonymous

Anonymous — Sun, 18 Nov 2007 01:16:00 +0000

Wow, if you cross your eyes on the first picture, you will see a stereogram!

By: Anonymous

Anonymous — Thu, 31 May 2007 13:49:00 +0000

at first and addressed to @ashleigh – the majority of the worlds population does not speak english as the first language, we have our own dialect – majority english! Show some respect, or learn our dialect, thank you.

secondly, i guess the house is standing in a slope so that the base of the right side (which we do not see) of the house is actually than the base of the left side. The ’tilting’ effect is then reinforced when we relate the right picture to the left picture. In other words, we assume that the left house is standing on even ground, but it is in fact standing on a slope, and when we compare a copy of the house with itself, then the effect is strengened. Does it make sense?

By: Carlos Daniel

Carlos Daniel — Tue, 15 May 2007 11:05:00 +0000

hi! i think i spot how the ilusion happens (please read carefully to dintinguish when im talking about the left/right tower of the church or the left/right picture):

the tower on the right of the church in the first picture is also inclined but in the oposite direction so when we put the same picture in the right, the tower in the left of the church gets side-by-side the tower in the right side of the church.

the effect is then amplified because we take the right tower as the leading vertical (or some middle invisible line between the two towers), wich is not the real vertical.

i used gimp (wich is linux similar to photoshop) to switch both pictures and the effect is absolutely the same. and if we are not sure the pictures are exactly the same, one can duplicate one of them side by side to get the same ilusion.