Middle-of-the-day pictures are tough. The sun is high in the sky, which means it can leave your subject with unflattering under eye shadows and a crazy over-exposed picture. No good!!
ISO - 100
Aperture - f/2.8 to f/6
Shutter Speed - 1/600th to 1/1000th of a second
Also helpful: Reflector
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ISO - 400 - 600
Aperture - f/1.8
Shutter Speed - 1/60th of a second
We are trying to allow as much light into the camera as we possible can! A wide open aperture (imagine it's like opening your eye up super wide), a slower shutter speed to get all that light in, and a higher ISO should do the trick.
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