Join Brent Winebrenner for an in-depth discussion in this video Applying concepts: Scenario three, part of Lighting for Photographers: Flash Exposure Fundamentals.
For our second shoot, we've just moved over a little bit from the scene featuring the…industrial tubing to kind of an urban outdoor setting that we've created, and what I have…in mind for this is to put some dramatic lights into the room behind the model and then also…then light her with a normal exposure and try to emulate a street light coming down from overhead.…So the objective is again to get a normal exposure on the model, create some drama in…the background and then ideally create kind of a little bit of an accent light with this…overhead street lamp. So here we go. Okay, Savannah, you can just hang out on that mark.…
I'm just going to take an exposure to see what the overall lighting looks like.…The light on you is perfect, but we've got a big hotspot on the left-hand side of the frame.…So, Lauren, I still want to shoot at f/8, because she is going to be moving through…that frame so I need the depth of field.…So when I had the flash 11 feet from the model, I got this pretty bright hotspot in the upper…
Even with today's automatic flash systems, there are good reasons to understand how flash exposure really works. Brent details these concepts in this course. The course describes how to calculate the true power of your flash and how to modify its output to match your needs, a technique that can extend battery life, reduce recycle time, and provide exposure control that is more predictable than fully automatic modes. The course concludes with several shooting scenarios during which Brent explores the creative use of gels, reflectors, and other light modifiers.
- Understanding exposure basics
- Reviewing aperture, ISO, and shutter speed
- Adjusting strobe power and flash to subject distance
- Finding the guide number of a strobe
- Making calculations based on ISO
- Understanding power ratios