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In this section the most common technical terms will be described. Select the first letter of the abbreviation or term you'd like to search for:A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
RF
Rear focusing works by moving one or more elements behind the diaphragm to focus the lens. This results in a faster auto focus because of the small weight of these elements.