Field depth display of zoom lens

摘要

(57) Abstract Objective In case of the zoom lens of 2 ring types,Be able to verify the display of depth of field even with the intermediate position of the zoom fieldThe ru depth of field display is obtained. Constitution Focusing ring 2 to be drawn out, huokaThe center line 8 which is provided in sling 2 and depth of fieldCurved line 9 to be displayed, center line 8 and depth of field curved line9 indicatory does not cross, inclines and zoom ring 1 isru. As for this, range marker 6 displaying in zoom ring 1To be, also range marker 6 turning with zooming manipulation, the parallel slitIt is, center line 8 is orthogonal zoom ring 1In order with to cause error in display of actual distance and range marker 6,Turning of zoom ring 1 and reeling the focusing ring 2 OutDying it is inclined together.