Baren Digest Saturday, 25 October 2003 Volume 25 : Number 2418 ---------------------------------------------------------------------- From: David Bull Date: Fri, 24 Oct 2003 23:15:58 +0900 Subject: [Baren 23183] Don't ... and I mean _don't_ ... miss this one! Well, maybe those of you who only print in pure black and white can skip this ... :-) But everybody else, please head over to: http://chat.carleton.ca/~tcstewar/illusions/index.html Select 'Colour Perception' from the menu on the left ... and then be prepared to pick your eyeballs up off the floor ... because you aren't going to believe what you are seeing ... or what you _think_ you are seeing. The second and third examples on that page are just beyond belief. So you think you know something about mixing colours, do you? :-) Dave ------------------------------ From: Emma Jane Hogbin Date: Fri, 24 Oct 2003 10:36:54 -0400 Subject: [Baren 23184] Re: Don't ... and I mean _don't_ ... miss this one! David Bull wrote: >But everybody else, please head over to: >http://chat.carleton.ca/~tcstewar/illusions/index.html The first one is not perception. If you test the colours with a computer program you'll see the ones they say are the same are actually different. Number two is legit and number three, with the shades, is too hard for me to tell using my program of choice. It is interesting though. :) emma - -- Emma Jane Hogbin ------------------------------ From: David Bull Date: Fri, 24 Oct 2003 23:48:09 +0900 Subject: [Baren 23185] Re: Don't ... and I mean _don't_ ... miss this one! If you test the colours with a computer program you'll see the ones they say are the same are actually different. That's the first thing I tried ... as I couldn't believe the statement that they were the same. My pixel colour meter shows that they are indeed identical ... Dave ------------------------------ From: Emma Jane Hogbin Date: Fri, 24 Oct 2003 11:04:03 -0400 Subject: [Baren 23186] Re: Don't ... and I mean _don't_ ... miss this one! Hmmm, perhaps it's just sloppy image compression...I noticed the image is actually being scaled on the HTML page. The actual image is about half the size. We're such skeptics to be immediately pulling out our programs to test things. :) The unscaled images are at: http://chat.carleton.ca/~tcstewar/illusions/usuishim.gif http://chat.carleton.ca/~tcstewar/illusions/checkershadow-AB.jpg http://chat.carleton.ca/~tcstewar/illusions/Colorcross1.jpg I'd recommend looking at them instead. Less fuzzy around the edges. emma - -- Emma Jane Hogbin ------------------------------ From: Charles Morgan Date: Fri, 24 Oct 2003 08:17:39 -0700 Subject: [Baren 23187] Re: Don't ... and I mean _don't_ ... miss this one! Hmmm, I think they are the same. Look at the top of the screen. The background color flows evenly through the gap between the white diamond columns and the gap between the black diamond columns. Just what program are you using to test the colours??? Cheers ....Charles At 10:36 AM 10/24/03 -0400, you wrote: On Fri, Oct 24, 2003 at 11:15:58PM +0900, David Bull wrote: But everybody else, please head over to: http://chat.carleton.ca/~tcstewar/illusions/index.html The first one is not perception. If you test the colours with a computer program you'll see the ones they say are the same are actually different. Number two is legit and number three, with the shades, is too hard for me to tell using my program of choice. It is interesting though. :) emma -- Emma Jane Hogbin ------------------------------ From: Mike Lyon Date: Fri, 24 Oct 2003 10:14:45 -0500 Subject: [Baren 23188] Re: Don't ... and I mean _don't_ ... miss this one! I believe that Dave is correct, Emma... The background 'gray' is all 41%. Then where the black and white diamonds 'touch' the illusion is created by making 37% and 45% grays... There's no cheat here -- the illusion is not the vertical intersection of the light and dark gray, it's that the light and dark grays both 'read' as the same shade as the background gray -- so it appears that the background gray between open columns of white diamonds could not be the same as the background gray between the open columns of black diamonds... - -- Mike Mike Lyon mailto:mikelyon#mlyon.com http://www.mlyon.com ------------------------------ From: "Daniel Dew" Date: Fri, 24 Oct 2003 11:35:28 -0400 Subject: [Baren 23189] Scary Thought Mike, I received your prints for 18a, awesome as usual. Just promise me one thing, with your skills at depicting reality so well, don't sign up for any self-portrait exchanges O.K.? Just the thought of a nude Mike , well....:-) d. dew ------------------------------ From: Mike Lyon Date: Fri, 24 Oct 2003 10:32:46 -0500 Subject: [Baren 23190] Re: Scary Thought Thanks, Dan... Too late, though... I already signed up for a self-portrait exchange... I'll be using the 'liquify' filter in PhotoShop in order to make certain parts more... Shall we say... Elephantine? Happy to hear the prints made it OK... - -- Mike At 11:35 AM 10/24/2003 -0400, you wrote: >Mike, I received your prints for 18a, awesome as usual. >Just promise me one thing, with your skills at depicting reality so >well, don't sign up for any self-portrait exchanges O.K.? >Just the thought of a nude Mike , well....:-) > >d. dew Mike Lyon mailto:mikelyon#mlyon.com http://www.mlyon.com ------------------------------ From: "Brad Teare" Date: Fri, 24 Oct 2003 09:41:36 -0600 Subject: [Baren 23191] Illusion Facinating illusions. I've been reading Interaction of Color by Josef Albers. After reading it you have to conclude that all color is illusion. A rather disconcerting realization (but intriguing). No wonder attaining "good" color is so difficult. Another good book is Visual Intelligence (a bit more technical). Thanks Dave. ------------------------------ From: FurryPressII#aol.com Date: Fri, 24 Oct 2003 11:51:06 EDT Subject: [Baren 23192] THANKS DAVE I rather enjoyed the site this would be the basic understanding behind eschers work. I hope everyone in here has seen Eschers wood cuts and wood engraving. I have always loved his skill in his work of his wood cutting and wood engraving. Another thing I love about Eschers work is that it is almost impossible to tell which is a wood engraving and which is a wood cut his hand is so skilled. It is nice to see some of the theory behind Eschers work. I esp. like Eschers distortion of plains something that can be done rather easily with computer graphics but was not so easy in his time. a big thank you Dave i enjoyed it a lot john (of the distorted furrypress) center ------------------------------ From: FurryPressII#aol.com Date: Fri, 24 Oct 2003 11:56:56 EDT Subject: [Baren 23193] Re: Illusion For sure color is an elusion if I am not mistaken we see somewhat like pixels just that the color receptors have a very fine D.P.I. and our brain mixes the three colors together as well as the dark & light receptors together. Lucky furry is not putting that part in his self portrait you would have to use your magnivisor to find it. But at my age I am not worried about it. Something that produced human teenagers is not that good I might add. john (sorry about the second post) center ------------------------------ From: Barbara Mason Date: Fri, 24 Oct 2003 09:35:39 -0700 (PDT) Subject: [Baren 23194] olive green Dave, I do know that olive green will fool you every time. It looks green, then grey, then yellow. It just seems to pick up what is beside it....a tricky color and I use it a lot! This was amazing, especially the one with the shadow...that was hard to believe. Best to all, Barbara please head over to: http://chat.carleton.ca/~tcstewar/illusions/index.html Dave ------------------------------ From: "Joseph Sheridan" Date: Fri, 24 Oct 2003 13:16:13 -0400 Subject: [Baren 23195] Re: Don't ... and I mean _don't_ ... miss this one! Dave Thank you for this mind teaser - mind blower! I recall in the Yoshida how to print book how Yoshida went on about the importance of his gray blocks. I think he had something there! Certainly these images will make me think harder about how I treat color. Joe ------------------------------ From: "Brad Teare" Date: Fri, 24 Oct 2003 11:24:54 -0600 Subject: [Baren 23196] book Where can I get a copy of Yoshida's how-to book? ------------------------------ From: "Joseph Sheridan" Date: Fri, 24 Oct 2003 13:31:50 -0400 Subject: [Baren 23197] Re: book Brad Explore that deep wealth of knowledge stored in the Baren Encyclopedia! http://woodblock.com/encyclopedia/entries/011_07/011_07_frame.html Joe ------------------------------ From: "Joseph Sheridan" Date: Fri, 24 Oct 2003 13:37:18 -0400 Subject: [Baren 23198] Re: A question To all you "professional" artists out here. I am looking to start selling my work and would appreciate any information (books, websites whatever) on how to set myself up as a business. Since this is really not Baren talk, if you do have any suggestions please feel free to contact me directly at sheridanpsm#msn.com. Thanks Joe >Where can I get a copy of Yoshida's how-to book? ------------------------------ From: "Elizabeth B. Atwood" Date: Fri, 24 Oct 2003 15:20:26 -0400 Subject: [Baren 23199] Exchange #18 To Coordinator Gilda Machado-Zimmerling, for whom I cannot find an e-mail address.......My prints (for exchange #18) were mailed today with the assurance of the postman that they would arrive in California well before the end of the month. I discovered too late that I had enclosed the wrong return address form (but with the right address).......my apoligies. E.B.Atwood in Maine ------------------------------ From: Mike Lyon Date: Fri, 24 Oct 2003 15:22:20 -0500 Subject: [Baren 23200] Re: Exchange #18 At 03:20 PM 10/24/2003 -0400, you wrote: >To Coordinator Gilda Machado-Zimmerling, for whom I cannot find an e-mail >address.......My prints (for exchange #18) were mailed today with the >assurance of the postman that they would arrive in California well before >the end of the month. I discovered too late that I had enclosed the wrong >return address form (but with the right address).......my apoligies. >E.B.Atwood in Maine The exchange information (including links to send email to the coordinators) is always available on our Baren web site at http://www.barenforum.org Coordinator contact information is on the bottom of this page: http://www.barenforum.org/exchange/exchange_18/exchange_18.html Hope that helps! - -- Mike Mike Lyon mailto:mikelyon#mlyon.com http://www.mlyon.com ------------------------------ From: Julio.Rodriguez#walgreens.com Date: Fri, 24 Oct 2003 17:04:29 -0500 Subject: [Baren 23201] Re: book Hi.....about the Yoshida book...if you are asking for the Toshi Yoshida book from the 1960's, it sometimes comes up on ebay and goes for between $100-175 dollars.....it could also be available at your local library for free (I don't mean go and rip it off...just take it out to read and then return it for others to enjoy !) If you are talking about Hiroshi Yoshida's 1939 masterpiece....good luck ! Much more expensive and rare.... however....as Joe pointed out...available free of charge for your pleasure reading & download at the barenforum.org encyclopedia. Hello to all the new members & past lurkers...Shirlene, Kylie, Emma Jane ....whatever your real names might be ! thanks....Julio Rodriguez (Skokie, Illinois) ------------------------------ From: Jsf73#aol.com Date: Fri, 24 Oct 2003 18:19:54 EDT Subject: [Baren 23202] Re: book As Julio pointed out, this book is rare and expensive. I was bidding on a copy and gave up well over 300 bucks US..... of course I just refer to the online version on the encyclopedia... However, Dave still hadnt put up all the prints from the book the last time I checked. The most important prints that show the sequence of printing the blocks have some missing online... I was able to download them from ebay as they were posted there, so if you want a copy of them just let me know. John Furr ------------------------------ End of Baren Digest V25 #2418 *****************************