Life, the Universe, and Flash Exposure Compensation
PlanetNeil photography - techniques for better flash photography
He has some great info on how important it is to use your camera in Manual Mode, but allow the Flash to work in TTL (i-TTL,eTTL, eTTL II, etc). This will allow you greater control over how much natural light you meter for, and by adjusting the Flash Exposure Compensation, you can control how much flash power augments the natural light.
The big thing I got out of the page was how to adjust Flash Exposure Comp based on the tonal quality of the scene:
- When using Ambient light, start with the Flash Exp Comp at -1 to -3
- When using the flash as the main light source, start with Flash Exp Comp at +0.6
- If shooting a mainly bright scene, raise Flash Exp Comp to make sure that the camera doesn't think there is enough light because of a highly reflective object (such as a white dress) and underexposes the face, eyes, etc
- If shooting a mainly dark scene, lower the Flash Exp Comp to make sure the camera doesn't think it needs to drain the flash because of a light-sucking object, (such as a black suit, or a dark backdrop) and overexposes the face, eyes, etc
I think I need to take some of my 5-in-1 reflectors, one with the Black side out, and one with the White side out, and play with how to set my Flash Exp Comp when shooting one white/one black, two whites, two blacks, etc, and come up w/ a "cheat sheet" for how to figure out the Flash Exp Comp for a given scene.
Give it a read. If you own a camera and a flash unit, you own it to yourself to check it out; there is a lot of good info there.
Labels: Flash, Natural Light, Techniques