Capture 6.4.3 / OS X Mountain Lion / Canon DSLR Workflow
Canon
If you are a Canon user, it’s recommended to stay with Capture One Pro 6.4.2 (using OS X Mountain Lion). Canon’s SDK in 6.4.3 is not optimized in Mountain Lion for tethering support at this time.
Canon 1Dx Files will work in 6.4.2, but tethering is not supported in 6.4.2 at this time.
Nikon
If you are a Nikon user, there are no issues working and tethering in Capture One Pro 6.4.3 at this time.
Keep in touch with our website and blog as support on this topic becomes available.