Exercise 11 - Mid-oranges with orange-yellow and violet-red. Cadmium Yellow and Permanent Rose.
I think these orange exercises are a bit skewed by the W&N Cadmium Yellow. The tube lists only PO20. The W&N website lists PO20 and PY35. W&N Cadmium Yellow Light (the pigment I should be using) is listed as PY35. So, it seems that my Cad Yellow is actually a mix of Cad Orange and Cad Yellow Light. Hmm...I am mixing with a mix... This does gnaw at my perfectionist tendencies but I'll just keep mixing away here, knowing that my yellow is a bit overextended into the orange camp.
Curiously, W&N's Cadmium Orange is a mix of PR108 (Cadmium Red) and good old PY35. Another mix! So how come they mix in Cad Orange to make Cad Yellow and don't use any Cad Orange to make Cad Orange? I think this is a good question so I have posted it off to Winsor and Newton technical inquiries.