Even I trust my 5d very much where I could say the AWB (Auto White Balance) accuracy is much better than what other body I use before … but in certain light condition, filter effect, and to have much perfect WB… I still correct my WB using 2 method below
*** before I start, I only shoot raw so these methods only apply with RAW and Photoshop , lightroom … (other software should be same concept but different interface)
A. look for white point
1at some case, I do not have time to shoot 2 picture (1 with grey card and the other without) .. then I will try my best to look for white spot in the picture
2. click on the WB tool on top
3. simply use the pen point to the white point
the color seem more normal but still need little more work to bring back original e.g. contrast, saturation, ….
sample of coversion
B. Grey card, look for grey
I prefer this method where this can be useful to correct WB and even correct most of the color cast … but this need shoot additional picture with the grey card or sypder cube (come with white, grey and total dark)
2. use the same WB tool as A2 above, but this time point to the Grey card or gray part of the spyder cube
– remember the temperature and tint value to apply on the actual picture
3. the correction
.. again, due to the blue cast…. we need little more work to bring back the other colors .. e.g. contrast, saturation …..
do drop me a message if any part of this not clear ….
*** again the final output still need further tune up due to the bad blue cast …