Talk:List of color film systems

message: Google Patents now offers an excellent resource to search U.S. patents by keywords and years of filing or issue. I just made some changes to the inventors of the various Technicolor processes, using this database. Search with keyword "Technicolor" and choose your year range (the earliest patent assigned to Technicolor is from 1917). — Walloon 20:18, 26 May 2007 (UTC)
thread_title: Google Patents

message: A BBC article discusses it here: . 86.133.48.50 (talk) 18:32, 12 September 2012 (UTC)
replies: text: Already on the list as "Lee-Turner colour 1899". The process itself is not news. AVarchaeologist (talk) 07:54, 11 November 2012 (UTC)
replies: text: Updated process info at Edward_Raymond_Turner#Lee-Turner_Colour , could do with more work though if anybody is interested? Da5nsy (talk) 16:42, 8 April 2013 (UTC)
thread_title:  1902 colour film recently discovered 

message: The source(s) used for founding this article managed to scoop up a number of early processes used only for still photography, and I have just deleted several of them, namely, Joly, Utocolor, Kromoscope [sic] and Finlay. Specifics can be found in the edit summaries.
The Warner-Powrie process was similar to Joly, but with a much finer screen, so it just conceivably might have been used for some experimental (perhaps large-format?) cinematography. Because a mysterious Untitled Film (1928) is listed for it, I have left it alone pending further research... (Instant update #1: Powrie did, indeed, patent a line screen motion picture product in 1926 and demonstrate it in 1928, but it had an extremely fine line structure and lumping it together with the Warner-Powrie still photography product of 1906 seems very indiscriminate. Barbara Flueckiger's splendid and amply-illustrated Timeline of Historical Film Colors, which also incautiously tosses in still-only processes—the uninitiated would be well-advised to read very carefully and be on the lookout for the magic words "still photography"—dates Powrie's motion picture process to 1924 for reasons which are far from clear.)
Likewise, Polychromide, as I recall, was strictly a two-color photographic paper print process, but I will double-check for any motion picture system by that name before deleting. (Instant update #2: sure enough, the name was later used for a subtractive two-color motion picture print process, which Flueckiger dates to 1918.)
The entry for Keller-Dorian is more problematic. It was most certainly used for motion pictures, but nowhere near as early as 1908. Unhelpfully, the "year of completion" specification does not make clear what constitutes "completion". In this case, does the description of a complete system in print or in patents, or its practical use for still photography, lock in a much earlier date even if its first use for motion pictures was in the 1920s?
Frankly, the open door provided by the overall soft definition of this list as of processes "known to have been developed" lays it open to vast expansion by the addition of every half-baked or unworkable new process, or alleged improvement of an old one, that was ever touted in print or trotted by the patent office. Perhaps it would be more useful to confine the list to processes that were actually used in a public presentation of some kind, even if only for a single screening in one theater? That would, however, exclude the Lee-Turner three-color additive system, impractical in its time but recently in the news thanks to digital restorations of some test films. AVarchaeologist (talk) 12:33, 11 November 2012 (UTC)
replies: text:  Is there a version of this page that encompasses film for stills photography? Currently colour photography links to this page as it is the best resource(??) for such a list... Da5nsy (talk) 16:47, 8 April 2013 (UTC)
thread_title:  Ringers and fuzzy boundary lines 

message: I have seen references that suggest there might have been two Vitacolor systems, one associated with Dupont as inventor (not financier); the other with Kelley.  The Dupont Vitacolor was introduced in December 1928, not 1930 (per the December issue of Movie Makers).  I have nothing that would clearly separate the connections, but it would be worth looking into whether they were the same or different processes and correcting the dates. PastReflections (talk) 22:40, 17 February 2019 (UTC)
thread_title:  Vitacolor 

message: Two other color systems are mentioned in Movie Makers.  Very little information is available about the Wolff-Heide system except that it was a 35mm process contemplated for substandard films for amateurs. Amateur Movie Makers, May 1928, News of the Industry, pp. 342-343
Victor Color:  Alexander Victor patented his own 1926 entry into color film, but almost nothing is known about it except that it was an alternating frame two-color additive process.  It is unclear from patent drawings how it  worked, but he claimed to be able to limit color fringing by "vibrating" the images back and forth longitudinally so that each frame was projected twice.  That may have been a forerunner of Morganacolor's triple projection 123-234-345 sequence, but no prototypes are known and it does not appear to have gone into production, though Victor was taking credit for the invention as late as the 1940's. PastReflections (talk) 20:56, 18 April 2020 (UTC)
thread_title:  Additional Systems