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Old 12th April 2019
Jim Ford Jim Ford is offline
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Re: Monochrome raw files

Quote:
Originally Posted by Wreckdiver View Post
Raw files are exactly what comes off the sensor, which includes colour. If any processing takes place then the result is either a TIFF or JPEG.
Colour data is not recorded as such by the camera sensor - just shades of grey. The photosites are exposed through a matrix of coloured filters - red green and blue *. Colour is interpreted later in either the camera processor or computer raw processor. eg if say photosite 200 across and 100 down received 50% exposure through a green filter then the processing software will subsequently interpret the data as being 50% green.

* Twice as many green filters as blue or red, because our eyes are most sensitive to green. I guess this is because we evolved in a 'green world' where we needed to distinguish potential predators from the surrounding vegetation.

Jim
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