Hi, my results are also lower in the blue channel whilst red and green very close to each other. Looking at the many shots I've taken today the blue is on average 8 lower than red or green. The values for red and green were invariably the same or within +/-1.

I have just taken 18 frames at 1/60th in under a minute and 12 were exactly the same reading (102/102/94) and all 18 were within 1 or 2 of these values.

Once again however (see previous post) an exposure at 1/40th, 2/3rd of a stop over the "correct" reading, produced closest results (134/134/124).

Goodness knows what the neighbours think as I run in and out of the house with camera and tripod to take another set of pictures of a grey card... LOL!

An interesting yet frustrating exercise!

Regards