tag:blogger.com,1999:blog-2999230124118604245.post2693677916478869130..comments2024-03-28T09:25:25.716-04:00Comments on Gurney Journey: "Secondaries" as PrimariesJames Gurneyhttp://www.blogger.com/profile/01870848001990898499noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-2999230124118604245.post-71403817608548826972015-10-09T07:37:51.900-04:002015-10-09T07:37:51.900-04:00This comment has been removed by the author.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-79217396318844397052015-10-08T23:06:26.040-04:002015-10-08T23:06:26.040-04:00Undoubtedly! My comment was just to clarify the an...Undoubtedly! My comment was just to clarify the answer to Robert's question at the top.David Briggshttps://www.blogger.com/profile/08013783496092131318noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-40359902363507072662015-10-08T21:41:10.751-04:002015-10-08T21:41:10.751-04:00David, thanks for that additional information. Of ...David, thanks for that additional information. Of course we're not speaking of such experiments with the objective of achieving the largest gamut, but rather achieving gamuts that have unconventional harmonies. If the only goal were to achieve the largest possible gamut from three initial subtractive primaries, then people would probably use something resembling cyan, magenta, and yellow. But from a painter's point of view, large gamuts are not necessarily desirable.James Gurneyhttps://www.blogger.com/profile/01870848001990898499noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-69844973841165281292015-10-08T21:33:12.718-04:002015-10-08T21:33:12.718-04:00Some clarification might be helpful here. Red-oran...Some clarification might be helpful here. Red-orange, green, and blue-violet work as primaries in autochromes because autochromes are viewed by transmitted light, and so the colours mix additively, and these additive primaries give a near optimally large gamut. The same colours will give a near optimally SMALL gamut in largely subtractive processes like paint mixing, where mixing paths between pairs of colours vary from convex or straight (between subtractive primaries) to deeply concave (between additive primaries), for example as in Fig. 5.3.4 here:<br />www.huevaluechroma.com/053.phpDavid Briggshttps://www.blogger.com/profile/08013783496092131318noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-73193766428779150832015-10-01T17:14:04.668-04:002015-10-01T17:14:04.668-04:00This comment has been removed by the author.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-2622017819525109792015-10-01T09:29:08.059-04:002015-10-01T09:29:08.059-04:00Very interesting, I wonder if using this palette w...Very interesting, I wonder if using this palette will make a painting look like an old photograph... I may just have to re-write my color brain as some point in the future, maybe for that graveyard I still need to find :)Chris Beavenhttps://www.blogger.com/profile/13217004166402889504noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-16243203129848592442015-09-30T21:19:48.325-04:002015-09-30T21:19:48.325-04:00Robert, the basic principle is that any mixture ma...Robert, the basic principle is that any mixture made from any two hues will result in a secondary hue of lesser chroma than the original hues, just as a straight line between any two points on the outer edge of the color wheel. The closer the two starting hues, the higher chroma the mixture. As Stephen said, a given paint color will often be either a single pigment or a composite of multiple pigments to achieve a certain hue. James Gurneyhttps://www.blogger.com/profile/01870848001990898499noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-26341885509392231412015-09-30T20:56:28.507-04:002015-09-30T20:56:28.507-04:00They aren't pre-mixed. They are discrete chemi...They aren't pre-mixed. They are discrete chemical compounds, such as dioxizane purple, pthalo green, and pyrolle orange.Anonymoushttps://www.blogger.com/profile/10029619660070707442noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-9605618620403887332015-09-30T19:33:49.860-04:002015-09-30T19:33:49.860-04:00I use liquitex acrylic paint and they sell what ar...I use liquitex acrylic paint and they sell what are called Primary red, yellow, and blue and they seem to mix pretty high chroma secondaries. Also cyan, magenta, and yellow seem to mix pretty high chroma secondaries. Do the premixed greens,oranges, and purples that paint companies sell have even higher chromas then the secondaries mixed from paints labeled primary red, blue, yellow and a palette of cyan, magenta, and yellow?Anonymoushttps://www.blogger.com/profile/17568134922097906207noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-12596630085416701502015-09-30T18:23:18.851-04:002015-09-30T18:23:18.851-04:00Robert, true, in the same way you can't mix hi...Robert, true, in the same way you can't mix high chroma oranges, greens, and violets from red yellow and blue.James Gurneyhttps://www.blogger.com/profile/01870848001990898499noreply@blogger.comtag:blogger.com,1999:blog-2999230124118604245.post-59722638679877005422015-09-30T15:28:54.982-04:002015-09-30T15:28:54.982-04:00If you only use green, orange, and purple on your ...If you only use green, orange, and purple on your palette, you wouldn't be able to mix high chroma reds, yellows, and blues though would you?Anonymoushttps://www.blogger.com/profile/17568134922097906207noreply@blogger.com