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.
They're the ones who opted for the Apple Watch Edition with an 18-karat gold case. Eight different styles of the Edition model are available. At $10,000, the cheapest is the 38-mm Watch fitted with a sport band, but the person who wants an Apple Watch Edition outfitted with the modern buckle will pay $17,000.