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Sometimes luck prevails. The safari driver spotted the leopard slinking through the bushes in Kenya’s Masai Mara. The dawn light was gradually brightening, but the light levels in the bushes varied considerably as the leopard moved through them. I used my favorite exposure strategy to deal with rapidly changing light levels where a high shutter speed must be maintained to capture a sharp image. I used the shutter-priority exposure mode and set a shutter speed of 1/1000 second. Then I set Auto ISO to maintain the optimal exposure. Canon 5D Mark III, Canon 800mm f/5.6 lens, Auto ISO 1600, f/5.6, 1/1000 sec. with shutter-priority, +.7 exposure ...

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