I am getting the mesage:-
"Non-neutral gray patches. The gray patch in row 4, column 3, has a significant color cast. Please reshoot chart carefully to avoid color casts and try again." These are RAW images from my Panasonic FZ200.
I shot the first try in the garden against a concrete post surrouinding by a grey weathered fence in bright winter noon/early afternoon time sun. I then tried again with a large sheet of black paper as the backgroud with the sun approx 45 degrees to the chart. Same conditions.
If I import the RAW images into Photoshop Elements 11 "As shot" I find that the offending square reads:-
Noon time - R217,G220, B220 approx. As I move the cursor Band G remain near or the same value but R can be up to 3 or so points higher
Early afternoon - R201,G201, B191 approx. As I move the cursor R and G remain near or the same value but B can be up to 10 or so points lower
What could be causing the color casts and how can I avoid it. grass and other plants are a large feature in the surroundings.