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Basic Daylight Exposure (BDE, for short): For a subject lit by direct frontal sunlight, the correct exposure is a shutter speed of 1/ISO at ƒ/16 or equivalent: at ISO 200, the exposure would be 1⁄200 sec. at ƒ/16 (since I work handheld and like faster shutter speeds, I’d use 1⁄800 sec. at ƒ/8). Switch to manual exposure mode, set the BDE, and it doesn’t matter what kind of reflections the sunlit bird swims across. As long as the bird remains sunlit, it will be correctly exposed—no need to reset anything as you shoot.
