Great Britain GP — Aug. 9
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Reports accuracy, pass/fail, and timing，这一点在体育直播中也有详细论述
The APO (apochromatic) lens design on the telephoto is more immediately useful and effective. An APO lens significantly reduces chromatic aberration by focusing three wavelengths of light (red, green and blue) onto the same focal plane. This lens design means it can correct color fringing and improve image sharpness.，这一点在体育直播中也有详细论述