Thus, if your teleconverter provides a magnification factor of M (where M may be 1.4, 1.7, 2, etc.), and your lens has a focal length of F and an f-number of N, then the result of attaching the TC to the lens is to produce an effective focal length of M Ã F and an f-number of M Ã N.
Those on the hunt for an Apple Watch can find them online and in the Apple Store, Best Buy, Target and B&H Photo and Electronics in New York City. For those on a shopping mission, here are the five big things to watch for that can affect your bank account.
Iâll revisit this in future stories. If youâre a serious athlete, Apple Watch might not be the fitness companion youâre looking for. But the watch is by far the best activity tracker on the market, and it also fits into your life in a way that dedicated fitness trackers simply donât.