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.
Choosing the best Apple Watch apps is the best way to bring your Apple Watch Series 2 or first gen Apple Watch to life. One of the most impressive things about Apple's ecosystem is the selection of apps compared to rival platforms, and with more than 20,000 available to download, the App Store has the potential to be the best in the business. With the watchOS 3 update, many Apple Watch apps run natively on the device itself.