FOCUS AID SYSTEM

摘要

A focus aid system includes a replaceable lens configured to adjust a location of a focus lens in a manual focusing mode, a focus lens location detection sensor, an imaging device, a controller that calculates a focus detection evaluation value based on an image signal received from the imaging device and matches the calculated focus detection evaluation value to focus lens location information received from the focus lens location detection sensor, a peak hold unit that stores a maximum focus detection evaluation value and a corresponding focus lens location as a peak value and a peak location, and a display unit. The controller determines the focused state based on at least one of a comparison of the focus detection evaluation value with the peak value or a comparison of the focus lens location and the peak location. The controller displays information about the focused state on the display unit.

主权项

1. A focus aid system comprising:
a replaceable lens configured to adjust a location of a focus lens in a manual focusing (MF) mode; a focus lens location detection sensor that outputs focus lens location information about the location of the focus lens; an imaging device that captures light transmitted through the replaceable lens to generate an image signal for a captured image; a controller that receives the image signal from the imaging device, calculates a focus detection evaluation value based on the image signal, and matches the calculated focus detection evaluation value to the focus lens location information about the focus lens location; a peak hold unit that stores a maximum of the focus detection evaluation value and a focus lens location that corresponds to the maximum focus detection evaluation value as a peak value and a peak location, respectively, for a predetermined time period; a display unit that displays information about a focused state of the focus lens; wherein the controller determines the focused state based on at least one of a comparison of the focus detection evaluation value with the peak value stored in the peak hold unit or a comparison of the focus lens location and the peak location stored in the peak hold unit, and displays information about the focused state on the display unit.