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Sigma announces two new Flash units. The EF-530 DG SUPER and ST feature a powerful Guide Number of 53 and is designed to work with the latest TTL auto exposure systems of all digital SLR cameras. The auto zoom automatically sets the optimum illumination angle in accordance with the lens' focal length in a range from 24mm to 105mm. When Wide Panel is used, the flash can cover the angle of 17mm. For bounce flash, the flashgun head can be tilted up by 90 degrees, to the left by 180 degrees, or to the right by 90 degrees...
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