dslrfilmnoob

As someone who actually tested this in person. The a7s was only slightly worse than the Canon 6d I had on hand. While that's not amazing, it's far from a deal breaker. Sony reps said that the firmware was in the very early stages and that the rolling shutter would be better than the 5d mark III by the time it was released. They pointed specifically at 12mb sensor versus the 5d mark III's much larger sensor and total read times.