The photo below is another experiment with flash photography. We had gotten some heavy rain perhaps an hour earlier. I went out with two Sony flash units (HVL-58AM), aimed them at an ocotillo in our backyard, and took a number of shots. Most of them overexposed the ocotillo. I got this shot with the flash exposure compensation dialed back to -2.3EV. The other exposure parameters were f/2.8, 1/60 sec, ISO 640. I increased the saturation of the ocotillo somewhat in post, but the sky was already that saturated to begin with.