This is great stuff from ML. Thanks for sharing.
In regards to Focal's AFMA, at what aperture should you perform Focal's AFMA test? I think i had it wide open during the test, is that ok or are we supposed to stop it down to something smaller like 5.6 or 8?
Generally test wide open... In fact, only the Pro version let's you select f/stops other than wide open...
Yep. 5.8 or 8 defeats the purpose because you will have a deep DOF and you will likely not notice a focus issue. Wide open is where you are going to see any issues.