>>>>>http://www.cs.cmu.edu/~dellaert/aligned/
>>>>
>>>>Thanks for that URL, Dragan. They're fabulous. I understand the principle of taking 3 photos, each with a different coloured lens, but when I see the resulting 3 B&W images and know that combining them gives colour - that's where my brain goes "DOES NOT COMPUTE!" :-)
>>>
>>>My thoughts exactly. I understand the primary colors and all that, but it is still amazing how it works. I guess the guy was a genius.
>>
>>Well I've seen a similar phenomenon in, say, Photoshop, where you can splice a colour picture into 3 monochrome components and when you recombine them they make colour. So the thing doe s work that way. But where did this Russian get colour photographic paper from. Even when I was a kid thjey were still tinting B&W photos to make pseudo-coloured imnages.
>
>
>Yes that's right.
>I guess he used some kind of transparencies.
>Even so, if he used filters, wouldn't the entire photo be green-ish or blue-ish or red-ish?

Well only the green componenets would project onto the paper through a gtreejn filter - all the other colours would be masked off. So the bits of the paper that need to take the red and the blue would be shielded from any light. Then the same for the other 2 colours. But afaik IT STILL NEEDS COLOURED PHOTOGRAPHY PAPER!! So where this guy got it from I don't know ;-{

>Once you overlay them to each other, would the photo come out the way it is shown on the website?
>
>hmmm I don't knwo enough about photography... where is Alex when we need him?

Bah, Alex don't know squat about anything but digital!