In what seems like an annual event, Profoto rolls out a new product that's either an enhancement to a product in their existing roster or a product that's a ground-breaking experience. While they're firmly entrenched in precise TTL technology with the D2 and B1X battery-powered fixtures, and have given us a smaller form factor plus TTL with the B2, the introduction of the A1 AirTTL-N Studio Light for Nikon is truly a game-changer.