Harold W. White |
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Lens difference
Hello! I just bought a Nikkor 300 mm F/4.5 Telephoto ED Glass lens. Then I saw the Same lens but it was marked IF ED what are the differences between the two? What does IF mean? Thankyou.
October 29, 2002
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Jon Close |
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The "IF" designation is for "Internal Focus." Focus is achieved by moving an interior element/group rather than the front element/group.
October 30, 2002
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