Technique
High-Speed Sync Flash: When and Why You Need It
High-Speed Sync (HSS) lets you use flash at shutter speeds faster than your camera’s native sync speed — typically above 1/200s or 1/250s. This seemingly technical feature solves a very practical problem that every outdoor portrait photographer encounters: balancing flash with bright ambient light while maintaining shallow depth of field. The Sync Speed Problem Your camera’s sync speed is the fastest shutter speed at which the entire sensor is exposed simultaneously.