Len Shepherd Offline Upload & Sell: Off
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Something not mentioned yet - lenses which focus very close tend to focus faster near infinity, and much slower near minimum focus.
This is because most of the focus ring travel (and most of the AF motor work) takes place at closer focus distances.
Taking the 105 macro D as an example the focus ring travel between 1 foot and 9 inches is about 5 times greater than between infinity and 3 feet.
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