Friday, 1 April 2011

OCA Course: Judging Colour Temperature 1.

Here are three images of the "Diving Belle" all taken with the white balance set at "daylight". I thought her neutral grey colour, and the white of the lighthouse, would show up colour casts well. It was blowing a gale, rocking even a heavy Gitzo, so I hand-held, as 16 stone is harder to move!


1. Sunny: About 2pm with full sun. The scene is as I remember it, with no colour cast. No surprises here - it's what I expected.



2. Cloudy: A few minutes after image 1. Not so much blue, as grey, and again, much as I recall it. The most noticeable difference is in the castle, lower left corner.



3. Sunset: Not as yellow as expected, but it was an hour before sundown. Nevertheless, there is a yellow tinge. This is no surprise to me - bird photography demands a good appreciation of colour temperature in order to portray plumage subtleties accurately for identification purposes. This used to be a big problem with film, but with digital, AWB mostly takes care of it.

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