The direct- coupling clip-on type A-TTL (advanced through-the-lens) automatic flash was designed with professional and advanced amateur users in mind. The 540EZ has a number of useful features, including AF auxiliary light, A-TTL preflash, auto zoom, and bounce functions, and there are seven zoom stop positions: 24mm, 28mm, 35mm, 50mm, 70mm, 80mm, and 105mm--all of which translates into a flash capable of illuminating a variety of complex situations.
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