Mike Prevette
Well-known member
One note for people trying out the B'speeds: The PL adapters on them are very rarely a good match for the RED. I've used RED's that were pre redesign of the mount AND after, both had an issue with some PL adapters.
The fillet on the adapter between the flange surface and the rear protrusion into the camera is to long and doesn't allow the lens to seat perfectly. This can be fixed with a little machining of the adapter.
It could explain why perfectly collimated B'speeds are coming up wrong on the Red.
The fillet on the adapter between the flange surface and the rear protrusion into the camera is to long and doesn't allow the lens to seat perfectly. This can be fixed with a little machining of the adapter.
It could explain why perfectly collimated B'speeds are coming up wrong on the Red.