he S1a is the AC-powered counterpart to the award-winning S1, and contains all of the same intelligent TTL and HSS technology.
Through The Lens Metering in TTL Mode uses the S1as entire 9-stop power range (500W 1.9Ws) and is automatically calculated in 1/10th stop increments, and allows for ± 3 stops of exposure compensation
Manual Mode utilizes the entire 9-stop power range, controllable in 1/10th stop increments
High Speed Sync in Manual Mode at up to 1/8000th of a second shutter speed using the top 3 stops in the power range and is manually adjustable in 1/10-stop increments
Fast Recycle Time of only 2 seconds at full power allows for rapid shooting in a fast-paced studio environment.
Color Accurate to within ±100 Kelvin using high-tech insulated-gate bipolar transistor (IGBT) technology
Short Flash Duration for freezing action and sports motion between 1/1000th of a second to 1/9000th depending on power output using IGBT technology.
Integrated Wireless System with remote TTL flash exposure compensation and manual power control in three groups from camera position using the S1 Remotes for Canon, Nikon, or Sony (sold separately)
Frosted Glass Dome softens and disperses light evenly through large and small light modifiers alike, from large octaboxes to small beauty dishes and reflectors while protecting the user-replaceable flash tube.
Aluminum Construction with an attractive matte finish gives the unit greater heat dispersion, durability and weight-to-rigidity efficiency
Firmware Upgradeable via Micro USB Port for future fixes and features
Bowens® S-Type Mount is compatible with a large scope of adapter rings and modifiers such as softboxes, reflectors, and grids