In addition to their ability to more effectively soften backgrounds, lenses with larger maximum apertures allow a greater volume of light to reach your camera's sensor, which in turn, makes it possible for you to select a higher (faster) shutter speed. It's those faster shutter speeds (e.g., 1/500th, 1/1000th sec. or faster) that freezes subject movement for capturing crisp, playful moments or sharp, decisive fast action. Lens: Tamron SP 17-50mm F/2.8 Di-II at F/2.8, 1/1600th. ©Andre Costantini
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