Several times a year, I get a nasty 48-72 hour migraine. This weekend, that, coupled with some arthritis flare-ups, left me rather. . . . subdued. My dear, sweet, husband, for no reason at all, bought me flowers!
The perfect thing for practicing with my external flash! I shot toward a bright window, ISO400; f 18; ss:1.3", exposure compensation on camera -.33, and I think the exp compesation on flash was set to +.7.
I've been trying to figure out a good approach to using my flash. Here are the 3 methods I've found, at least in the way I understand them:
1. Set your camera to ISO: 400; f 4.0; shutter speed 1/40 and shoot. The reasoning is that ISO and shutter speed control the ambient (background) lighting, and the burst of light from the flash will "freeze" the action so the slow shutter speed will be fine. The slow shutter speed is suppose to allow the background to have at least some light. With this, I think that sometimes an f of 4 will be ok, like for one person, but in other situations, on want much more of an area in focus and want more than an f of 4.0.
2. OR, With ISO 400, first take a shot in P mode, of the background area, without your intended "model" in the foreground, and the flash off. Look at what the settings are that the camera picks. This is going to determine a good exposure for the background, which will be controlled by the camera settings. Now, set the camera in M mode, using the same settings determined by this "test" shot, turn on the flash and shoot. Camera may set flash correctly, or I adjust the exposure compensation + or -. What I don't like about this is that I'm not sure I'd always like the aperture (f) chosen by the P mode. However, I do have more control over the ambient lighting (background) than I would in the first method.
3. OR, With ISO 200 or 400 (depending on light conditions), shoot in A mode. I pick the f stop that I want. Set the camera exposure compensation at -1.0 (this will slightly darken the bacground); set the flash at +.7 and shoot. Again this may be exactly what you want, although may decide to increase or decrease camera exposure compensation, or flash exposure compensation. It might take some adjusting the exposure compensation on camera and on-flash to get what I want, but I should have more control over the outcome.
So, what do all of you think? Playing with external flash(es), what kind of settings do you tend to use?