tag:blogger.com,1999:blog-8768375296475349032.comments2023-12-07T05:07:30.405-06:00The Refracted LightMark S. Abelnhttp://www.blogger.com/profile/06692448528819277158noreply@blogger.comBlogger81125tag:blogger.com,1999:blog-8768375296475349032.post-63785980078868122892020-11-11T16:26:18.042-06:002020-11-11T16:26:18.042-06:00Thanks for this great work! I'm so grateful t...Thanks for this great work! I'm so grateful that 7 or more years after their creation your ICCs are still up for download. I love the colors that these ICCs facilitate, colors somewhere between real autochrome and the images I miss so much from Agfa's wonderful but now long-gone Portrait 160 film. <br /><br />For some years I've been interested in the 1910-20s Palm Springs "Creative Brotherhood" led by painter/draftsman Carl Eytel. (The great desert naturalist Edmund Jaeger drew my interest in this group of Mojave-based artists, writers, and scientists.) Fred Payne Clatworthy, a late-comer to the brotherhood, created lovely autochrome images of both Mojave and Colorado landscapes. What a pleasure now so effortlessly to capture at least a hint of the marvelous images Clatworthy and others brought to life in Lumiere's humble potato starch. <br /><br />Larry Frisch<br />Victoria, BCAnonymoushttps://www.blogger.com/profile/00300627279730579621noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-50283953708837748392020-04-19T10:08:59.541-05:002020-04-19T10:08:59.541-05:00Hi,
I have been playing with similar notions.
I b...Hi,<br />I have been playing with similar notions. <br />I built a random "pixel" generator to "clump" similarly colored pixels into an autochrome mask that was more... splotchy. <br />I would love to correspond with you.<br />Mikeblueeyedpophttps://www.blogger.com/profile/09497382728912489615noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-12684215152917069572020-01-24T13:01:40.574-06:002020-01-24T13:01:40.574-06:00Very nice emulation. I believe the original starch...Very nice emulation. I believe the original starch mixtures had some black between the individual grains. I wonder if that could be added to the digital "reseau"?<br /><br />I'm working to recreate the silver gelatin process with dyed and milled grains of starch and a panchromatic emulsion. A quick shortcut might be to print your digital color mosaic onto a transparency using a high-resolution inkjet printer and use that as a mask over standard 4x5 black and white film. The film would be developed separately and reversal processed for a positive image. The mask would be reapplied after processing for viewing.<br /><br />I already have the chemistry for the reversal developing process perfected. I'm going to try printing the mosaic file to a transparency today to create the mask.<br /><br />Great work!<br /><br />Dondf99https://www.blogger.com/profile/08917205304201911313noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-32648888060352790222019-02-26T16:52:13.108-06:002019-02-26T16:52:13.108-06:00thank you for this very informative articlethank you for this very informative articlebphttps://www.blogger.com/profile/07561672140291385202noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-39113501769458058272018-12-25T19:24:39.503-06:002018-12-25T19:24:39.503-06:00D700 is still the best portrait cam ever.D700 is still the best portrait cam ever.Anonymoushttps://www.blogger.com/profile/11956815812289738729noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-83552181678524282152018-01-31T07:08:15.670-06:002018-01-31T07:08:15.670-06:00This comment has been removed by the author.dabble778https://www.blogger.com/profile/18377299242405843664noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-57689860716136188712017-07-27T20:53:43.695-05:002017-07-27T20:53:43.695-05:00I came across your blog while googling the Purkinj...I came across your blog while googling the Purkinje effect. My specific interest is in how the eye sees vs how the camera sees, and how to achieve the eye's "subjective objectivity" as you rightly put it, in Photoshop. Thank you for writing this, I look forward to experimenting, using your analysis as a starting point.-Shttps://www.blogger.com/profile/04112478616199494812noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-87765322939005619652017-05-30T04:17:07.197-05:002017-05-30T04:17:07.197-05:00Excelent work! I have this question regarding the ...Excelent work! I have this question regarding the human night vision for more than 10 years...Liviuhttps://www.blogger.com/profile/02874228490397088819noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-21318116782254011282017-03-07T19:13:51.640-06:002017-03-07T19:13:51.640-06:00This comment has been removed by the author.mcshttps://www.blogger.com/profile/10976584710112203254noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-2361899211000011412016-10-30T08:54:19.845-05:002016-10-30T08:54:19.845-05:00Very well researched and implemented, well done! I...Very well researched and implemented, well done! I've followed instructions to use on a 1901 French trolleybus recreation and it's looking good. Just one question - How do you drag the noise filter over the image? Do you mean create a layer above the target image? If so, how much opacity do you use? <br />Very many thanks.traklesshttps://www.blogger.com/profile/12445251314333371063noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-19133707992489176002016-05-05T05:22:22.246-05:002016-05-05T05:22:22.246-05:00Hi Mark, I have read your post about skintones iss...Hi Mark, I have read your post about skintones issues on most sony cmos sensor based cameras and have to agree 100% with your observation : sony cmos sensors all suffer from very low and dull color reproduction, the ossue becomes even worse in mixed light situations. <br />I purchased my first digital camera about 7 years ago, a humble D40X (10mp CCD) with 2 decent lenses and was actually impressed with the results, even with jpeg files coming out of the box. Then, I started quickly to shoot raw and the Nef files were even more exciting to handle. The files almost matched my 6x7 chrome slides (aside of the resolution) and I printed a few 24x36 inch lightjet shots who came out beautifully with a tiny touch of high pass Filter.<br /><br />I kept my trusty D40X and purchased a D5100 and later on an "oily" D600 (which was replaced by Nikon for a brand new D610) I also shot with the D300 and D200. While I was impressed with the precision of the D300 AF and the resolution and dynamic range of the D5100 and even better D610, there was clearly something wrong with the color output. I mainly shoot landscapes and portraits, and the colors of sony cmos based cameras are just wrong and dull : they have a tendendy to go magenta and orange, woth greyish brownish shadows. When pulling the shadows, there is a red magenta cast instead of just brightening up the area. And the whole files lack the shiny effect or chrome aspect of my CCD files.<br /><br /> I was an old member of Dpreview and became fed up with some members bashing our observations (many leica shooters also regret the CCD sensor) and ended up understanding that those people did not take the time to compare properly both sensor types using the right software ; capture nx2 may be slow but it offers a way better output then any other software. Some other shooters simply dont seem to bother about color rendition and others just keep upgrading without looking backwards. <br /><br />I also have a m43 panasonic setup who carries a MOS sensor which is to my understanding a hybrid sensor, and offers quite decent skintones, they still lack some shiny effect on the colors but the color separation and tonalities are way better then on sony cmos based cameras.<br /><br />The results of my D610 and D5100 files became so frustrating that I began to investigate if there was a way to overcome them without having to struggle with each NEF file in post production. So i took the same nef shots with the same focal lenght on each camera, some landscapes and some portraits, using different lighting conditions. I opened the files in CNX2 and the cmos files were obviously bad looking from the start. I went into the deep settings of CNX2 and created some basic settings that almost matched my CCD files (they still lack some chrome effect but the skintones are now spot on) I am willing to share my settings with anyone who is interested.tiborhttps://www.blogger.com/profile/08067827506982449656noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-34349539545232063002016-01-03T20:26:25.440-06:002016-01-03T20:26:25.440-06:00Sony cameras, at least the RX-series, to my eye im...Sony cameras, at least the RX-series, to my eye impart a characteristic "Sony" color to JPEG output. Even the warm tones look oddly cool and the blue tones seem more pronounced. The look is not ideal for skin colors, in my view. In terms of non-DSLR JPEGs, I think the color is most pleasing from Fuji cameras and Olympus cameras.NewsViewhttps://www.blogger.com/profile/13856810240848221963noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-11405597781357320872015-11-16T10:05:06.465-06:002015-11-16T10:05:06.465-06:00This was really enjoyable.This was really enjoyable.Tone Defhttps://www.blogger.com/profile/09442579793739045089noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-83349867971929723432015-05-02T02:26:24.730-05:002015-05-02T02:26:24.730-05:00Thank you very much Mr. Abeln.
I never came up wi...Thank you very much Mr. Abeln.<br /><br />I never came up with the idea of using ICC profiles to limit the color spectrum of an image.<br /><br />I've tried to make a Lightroom-Preset just by watching Autochrome images, guessing the color shifts and came up with a result that is pretty close to your "Old Autochrome-ICC-profile" Here is an image: http://i.imgur.com/0jdxWdU.jpg<br /><br />I'll try to improve the preset but it will never be as good as your results.<br /><br />Thanks so much for the great effort. The look of Autochrome pictures is so unique and you pretty close to the original results. Later Autochrome pictures were much more colorful and saturated.<br /><br />This is also a good source for Autochrome images: http://visualhistory.livejournal.com/51055.html<br /><br />Have you made any more progress yet? I tried to follow your grain tutorial but I end up with a strange color grain pattern. When I use the darken blending mode, the highlights clip and become some kind of blue-violet. Would be great if you could upload your .tiff file again.<br /><br />Is it possible to make a Kodachrome-ICC-profile that works just like your Autochrome-profile? I'm also working on a Kodachrome preset and I came really close to the look of Kodachrome but not in a scientific way.Pierrehttps://www.blogger.com/profile/11779927197609514740noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-90833285139581275432015-04-01T08:00:25.752-05:002015-04-01T08:00:25.752-05:00Mark, I really enjoyed this article, and your one ...Mark, I really enjoyed this article, and your one on color profiles. I thought they had lots of useful technical information, yet were still easy to follow. Color profiles were new to me, and I really enjoyed playing around with yours. The details about the science and colors of Autochrome Lumière helped me greatly as I was going about creating an iPhone app that turns regular photos into ones that looks like autochromes. (Here's the <a href="https://itunes.apple.com/us/app/autochrome-beautiful-filters/id971949949?mt=8" rel="nofollow">link</a> to it on the App Store, if you're interested.<br /> It's free.)Anonymoushttps://www.blogger.com/profile/05440009581817835287noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-77654941818540552172014-12-11T13:57:39.066-06:002014-12-11T13:57:39.066-06:00Hi Mark,
In para.3 you say "Any more physica...Hi Mark,<br /><br />In para.3 you say "Any more physical accuracy will increase your costs and convenience dramatically."<br /><br />Should that be be "inconvenience"?<br /><br />TedTed Cossinshttps://www.blogger.com/profile/15542151849202572471noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-35865301063758931812014-07-11T21:45:19.423-05:002014-07-11T21:45:19.423-05:00Fascinated by this process. Getting the colours ri...Fascinated by this process. Getting the colours right is the hard thing and your profile is very handy.<br />Paul Lantzhttps://www.blogger.com/profile/16973582645880018910noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-29895264923265702992014-05-06T18:36:57.253-05:002014-05-06T18:36:57.253-05:00Ron,
It was fairly easy once I had it figured out...Ron,<br /><br />It was fairly easy once I had it figured out. It was an additive process, so that’s very easy to both characterize and reproduce. Mark S. Abelnhttps://www.blogger.com/profile/06692448528819277158noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-10285357888034134322014-05-06T14:59:45.310-05:002014-05-06T14:59:45.310-05:00You know you have pretty much nailed it. Fo years...You know you have pretty much nailed it. Fo years I have been fascinated with Autochromes and have been trying to find a filter to emulate the look. Yours is far and away the best I have come across. Really nice work. <br /><br />I implemented the noise filter as an overlay layer set to 50% grey. instead of a separate image Seems to work the same I think, and can make an action.<br /><br />Thanks!Ron Zacappahttps://www.blogger.com/profile/17453115091370368862noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-21717605953362537632014-03-08T19:49:45.435-06:002014-03-08T19:49:45.435-06:00Francesco, the next article in the series is poste...Francesco, the next article in the series is posted.Mark S. Abelnhttps://www.blogger.com/profile/06692448528819277158noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-80858977638525688892014-03-01T16:51:54.259-06:002014-03-01T16:51:54.259-06:00This appears to be a very promising series, I look...This appears to be a very promising series, I look forward to the next posts!Francescohttps://www.blogger.com/profile/09661917829289868181noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-13696892162804282462013-05-29T10:04:05.589-05:002013-05-29T10:04:05.589-05:00I use Photoshop CS5. I create ICC profiles from wi...I use Photoshop CS5. I create ICC profiles from within Color Settings.Mark S. Abelnhttps://www.blogger.com/profile/06692448528819277158noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-79791995859971570552013-05-29T02:31:50.417-05:002013-05-29T02:31:50.417-05:00what program did you use to create or edit an ICC ...what program did you use to create or edit an ICC profile???<br /><br />Stefan - stefan.chirila@gmail.comStefan Chirilahttps://www.blogger.com/profile/15864093472536199337noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-56553101957868889272013-04-17T18:06:31.513-05:002013-04-17T18:06:31.513-05:00Your blog has been nominated for a Liebster award ...Your blog has been nominated for a Liebster award by Mike Lindner at http://wdmt.blogspot.com (Seriously, this is not a scam/spam comment, we promise). See the details here:<br />http://wdmt.blogspot.com/2013/04/ich-bin-ein-liebster.htmlMikehttps://www.blogger.com/profile/02491084930433319172noreply@blogger.comtag:blogger.com,1999:blog-8768375296475349032.post-30078786585560394942013-04-12T12:59:44.250-05:002013-04-12T12:59:44.250-05:00Ack! You are correct!Ack! You are correct!Mark S. Abelnhttps://www.blogger.com/profile/06692448528819277158noreply@blogger.com