(1dx) Best way to use flash in Av mode?

Started Aug 18, 2013 | Discussions thread
phototeacher Contributing Member • Posts: 844
Re: (1dx) Best way to use flash in Av mode?

I don't know the 1Dx, but with the Mark 4, putting the camera in Av mode will allow it to adjust the shutter speed for the correct exposure at the aperture you have set.  It does nothing for ISO.

I would propose that shooting at f/1.4 at ISO 400 (which I would say was set by the user, not automatically) would result in overexposure in the typical indoor setting, with you subject only a few feet away.  Using Av mode the camera will try to balance ambient light exposure (your slow shutter speed) with flash exposure, and I think that f/1.4 is too wide for the situation.  Try using either a smaller aperture,(f/4-5.6) and/or a slower ISO.(200)

You might also try putting the camera in M and using a shutter speed of 1/60-1/200, ISO 400, and f/5.6 and I think you will see some better results.

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