@stobenkin Thanks!
@Thomas_Mansencal
We’re usually using a 8mm fisheye tilted up slightly with 4 sets of brackets at 90 degree intervals.
So this would put the color checker at quite an off-angle from camera.
So again, I’d worry that the measurements from the color checker would be quite skewed by the more exaggerated fresnel reflection on the card - but perhaps in practice it does not matter as much as I think?
I guess I’ll try a few experiments when I get a chance with a 5th camera angle pointing down with the color checker under the tripod.
Cheers
Dan