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Old Technique

Started Sep 7, 2018 | Discussions thread
Holger Bargen Veteran Member • Posts: 4,906
Re: Old Technique

uncleskull wrote:

Back in the film days, I had a Kodak book which talked about taking a series of three pictures through different color filters (RGB if my deficient memory is still working). Whatever was stationary for all three of the exposures was rendered correctly, while anything that moved was rendered in either R, G or B (or combinations thereof).

Does anyone remember the name of that technique? The filters involved (although I might be able to google that if I know the process name)?

I can remember examples of trees and water ripples in the book.

Thanks in advance.

If you take a photo with a digital camera your sensor will gather the colour nformation from 3 sensor types seperatelly: each pixel has at least on red sensor, one blue and one green sensor. At least if you have a Bayer sensor.

https://www.cambridgeincolour.com/tutorials/camera-sensors.htm

With many viewer or post-processing programms you can split up the information of each colour channel. The simplest program I know is Irfan View.

I don't see an advantage over the technique you describe - escept you have a camera that follows a strange colour management concept:

https://petapixel.com/2017/03/03/x-trans-vs-bayer-sensors-fantastic-claims-test/

For these cameras your technique may help to get clear information patterns for each colour seperately without the shortcomings of the sensor type.

Best regards

Holger

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