Originally posted by hobkyl Thanks for the replies. I will try your suggestion mlatour.
The photos I took were indoors, no flash, under plenty of artificial light.
artificial light can be quite varied, all with different colour temperatures and more than one type of lighting may be the issue. it can be vary difficult to set WB for multiple sources (If I know I'm shooting under fluorescent or Tungsten and going to use a flash then I add a gel to my flash to balance it to the appropriate colour temperature.
In film days I would have also added a filter to the lens to correct it all back to daylight if i was shooting a daylight balanced film (almost all film is now daylight balanced the alternates are slowly disappearing)
PSP may not recognize the kx, I always shoot DNG for program compatibility) effectively there is no difference between PEF and DNG as they are both raw files and store the information without finalizing any image settings (the big advantage to RAW)
LED light BTW is the absolute worst light to try and balance. it has a very narrow spectrum and basically mixes red green and blue to get white. if the colour it is casting is any thing other than white you will be missing a big part of the spectrum your sensor picks up.