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.
Selling your Apple smart watch for cash is a very easy process with BuyBackWorld's online electronics buyback program. Simply select the model and condition of the device you wish to exchange and trade for money. It is important to know the size of your watch's case since Apple released two sizes: 38mm and 42mm.