Yes, but that in itself is colour information!
Originally Posted by Nikanon
Indeed there are no colour couplers in b/w film, but we can take those tonal relationships and use them as the elementary makeup of a colour photograph. For example, if I took a b/w picture with a red filter, the film (assuming it's pan film) would therefore only capture the intensities of the colour red in the given scene (that's why the sky comes out black, because the sky is almost cyan - the opposite of red). Therefore, this "red b/w" image can be used as the red channel in a typical RGB image.
Take a look at the dye transfer process. Having 3 different b/w pictures of the same scene separated by filters, they would be compiled to make a colour image. Technicolor was also based on this principle.
Thats why I think it might just be possible to replicate EIR with 3 separation negatives. I was also just looking at the general spectral sensitivity of infrared film and I noticed it still has sensitivity in the blue/green area. So, I think the infrared exposure would have to be behind a red filter to block the green/blue spectrum.
Okay guys, let's get the dye-transfer process going again! (Or we could just use PS to compile the channels)
Edit: Does anyone know the spectral sensitivity of the infrared layer in EIR? Or what that layer actually captured?
Last edited by happyjam64; 09-05-2010 at 01:19 AM. Click to view previous post history.