C300 Firmware, Canon Tethering under Mavericks, and App Nap
The long awaited Canon C300 firmware update (allowing for user selection of the magnified focus area among other features) is now out. I have not had a chance to test it yet but you can get it here. I also wanted to confirm that Mac OS 10.9 Mavericks works fine in terms of tethering the Canon 1D