Pentax K20D + Sigma 17-70/2.8-4.5 autofocus speed
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haha Dogs - Yes, other animals - Idont know ?? Do they ?
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dont the animals hear the ultrasound?
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HSM = quietly = silence is very important in nature photography.
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Sounds cool. Who the hell cares about HSM or USM when all the motor does is rotate the lens a few mm to the right or to the left.
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Does the lens stay at f/2.8 maximum aperture throughout the entire zoom range?
flyguyga321 1 year ago
@flyguyga321
obviously not if it has 17-70/2.8-4.5
xmeda 1 year ago 2