Amazing color film footage of London in 1927!

[Xithras]

40. It's inferior because it's technically only two colors.

Basically, the filming method simply used a camera that swapped a red and green filter in front of alternating frames, using black and white film. Each frame was then stained with the appropriate color when developed, and it gave the appearance of color when played back at normal speed. If you look very closely though, you'll notice that all of the colors are actually just shades of red and green overlaying grayscale. There are no blues or yellows.

The original Technicolor was a red/green two color film also, but full spectrum Technicolor had been invented by 1930, making the process used in this film permanently obsolete. It wasn't the war that kept them from exploiting it, but the fact that technology passed them by. WW2 didn't begin in Europe until 1939, and by then many full spectrum Technicolor movies had already been released (including the still famous Snow White And The Seven Dwarves), highlighting the flaws of this method and eliminating any real interest in it.