tag:blogger.com,1999:blog-19384577.post7465474692597203539..comments2024-03-20T19:23:09.857+02:00Comments on Notes from underground: The past as it was: rare color photos of Czarist RussiaSteve Hayeshttp://www.blogger.com/profile/11283123400540587033noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-19384577.post-24613944477549289302009-09-05T00:24:37.282+02:002009-09-05T00:24:37.282+02:00Perhaps I can add, for those interested in photogr...Perhaps I can add, for those interested in photographic history, that even when colour film for amateurs was introduced, which did not require a special camera, the same process was used for printing them in books and magazines. A photojournalist would usually take positives on colour slide (reversal) film, and then three (later four) colour separation negatives would be made from the slide, though with a subtractive process, so instead of red, green and blue, they would be yellow, cyan and magenta. These negatives would be used to make four half-tone printing blocks and each page would be printed four times, with four different colours of ink - yellow, cyan, magenta and black. <br /><br />When offset litho began to replace hot-metal printing in the 1960s, it became cheaper and easier, but the separations were still used. That was when daily newspapers began using colour pictures. <br /><br />Now with digital photography it is a one-stage process -- ink-jet printers print the different pixels in different coloured inks so the paper only passes through the printer once, and not four times as in the past. <br /><br />But the irony is that older photos (pre WWI), made with separation negatives, will retain their colour much more accurately than those made more recently with colour film in which the dyes have faded.Steve Hayeshttps://www.blogger.com/profile/11283123400540587033noreply@blogger.comtag:blogger.com,1999:blog-19384577.post-38512922623315304362009-09-04T19:22:41.618+02:002009-09-04T19:22:41.618+02:00As an ex-Russian resident, that's an amazing t...As an ex-Russian resident, that's an amazing thing. It was a different world.James Highamhttps://www.blogger.com/profile/14525082702330365464noreply@blogger.comtag:blogger.com,1999:blog-19384577.post-82806503943537959852009-09-04T19:15:40.874+02:002009-09-04T19:15:40.874+02:00Thats a fascinating post. Thank you :-)Thats a fascinating post. Thank you :-)CherryPiehttps://www.blogger.com/profile/11788084724907992076noreply@blogger.comtag:blogger.com,1999:blog-19384577.post-63188033338085523592009-09-04T18:15:27.156+02:002009-09-04T18:15:27.156+02:00Fascinating, thanks for posting this.Fascinating, thanks for posting this.Yewtreehttps://www.blogger.com/profile/02028699564003381058noreply@blogger.comtag:blogger.com,1999:blog-19384577.post-36785941960136915292009-09-04T18:05:21.715+02:002009-09-04T18:05:21.715+02:00becomes known about the early process, thanks.becomes known about the early process, thanks.Tiknohttps://www.blogger.com/profile/05733973438543735098noreply@blogger.comtag:blogger.com,1999:blog-19384577.post-68438958000072356852009-09-04T12:29:03.412+02:002009-09-04T12:29:03.412+02:00Thanks for this fascinating post. I'm a photo...Thanks for this fascinating post. I'm a photography nut, but didn't know all about that early process. So, got double from this post: learned something new and saw a great photo. Thanks again.Tauratinswehttps://www.blogger.com/profile/10273045023254083987noreply@blogger.com