Originally posted by lotech all the photos came out yellowish to the point that can't be corrected, some time the photos even turn out reddish
While the K-3 and K-1 are able to meter and AF down to -3 EV [ie VERY dark], it's possible that in dim light and perhaps with a slow lens the camera metering sensor may simply not be able to get enough colour data out of the scene to take an accurate white balance reading.
It is also possible that if you routinely use spot metering or even centre-weighted sometimes, you may effectively be 'crippling' the metering sensor, by limiting how much of a scene it is allowed to read, hence not helping it obtain an accurate WB reading.
Plus often street lighting, and stadium lighting too, will subtly cycle colours or even flicker, which has been known to cause AWB problems for many a camera.
Originally posted by southlander Shooting RAW and editing afterwards allows WB adjustment without the problems associated with having the camera's best AWB guess baked into the JPEG.
+1. Plus always bring a grey card.