The Sigma UAF Zoom 55-200 mm f/4.5 is equipped with an autonomous system of autofocusing. It features a phase type of focusing. Range of sensitivity - 3-17EV. Power supply - 3 ААА batteries.
It was also manufactured under the name of Prakticar AF PB 4.5/55-200 MC to the order of the German Pentacon Company. This variant does not have a focusing button, as the control is realized electronically by means of a start button on the camera (bayonet mount has contacts).
Posted by:nukemall Date of publication: 07.03.2011