tag:blogger.com,1999:blog-7258563082340254690.post3945408838593005744..comments2023-04-18T15:59:07.914+01:00Comments on Camera mods and hacks: Colour SeparationsRichardhttp://www.blogger.com/profile/05457219707530529587noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7258563082340254690.post-7230617316946874282014-02-16T14:51:48.073+00:002014-02-16T14:51:48.073+00:00Hello, I too stumbled on to your blog and read you...Hello, I too stumbled on to your blog and read your experience with color separations. I became interested in this because of the Sergy Prokudin-Gorskii: Russian Empire photo archive at the Library of Congress. After piecing together several articles I figured out how to combine the RGB 'negatives' to form wonderfully luscious rich 'technicolor' photos. I wrote up step-by-step instructions on how to do it in GIMP on my blog. You might find it useful:<br />http://texaswindstorm.tumblr.com/<br />Next I'm going to try making color separations myself. I acquired a Nikon N80/F80 35mm auto-advance camera. It was the last film Nikon made that had a cable shutter release. I'm working out how to make a 'universal' color filter adaptor so that color separations can be made quickly to minimize registration problems.ScuttledMonkeyhttps://www.blogger.com/profile/06966053464236249874noreply@blogger.comtag:blogger.com,1999:blog-7258563082340254690.post-50228184546544677042013-06-21T01:40:18.118+01:002013-06-21T01:40:18.118+01:00After reading your blog, I wish I had not sold my ...After reading your blog, I wish I had not sold my Wratten filters. This is a great way to put them to new use.<br /><br />It is possible to get the red, green, and blue images to combine additively in Gimp. First make sure each image is saved in grayscale. Then create a new, empty image in the RGB format. In this newly created image, go to the channels tab and highlight exactly one of the channels, either red or green or blue. Make a copy of the corresponding grayscale image (Ctrl-C), and paste to the RGB image (Ctrl-V). This creates a floating layer. Once you have positioned the layer where it needs to be, select the Anchor option, and the floating layer goes away while the image is stored in the channel. Repeat this for the other two colors. When finished, you will have a full-color RGB image. You can then adjust brightness and contrast on each of the channels separately.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7258563082340254690.post-9842533403846067482012-12-23T05:47:26.422+00:002012-12-23T05:47:26.422+00:00Hi there... I stumbled across your blog today! I&...Hi there... I stumbled across your blog today! I'm just starting out an adventure into camera modding, so your posts have been really interesting. Anyway, I just wanted to contribute: making "additive" images is quite easy in GIMP. If you have each color on a separate layer, simply go to the top of the layer window and use the drop-down to change the mode from "normal" to "addition". (do this for each layer) Hopefully that helps!<br /><br />I look forward to browsing your archives and seeing your future posts!Anonymousnoreply@blogger.com