Patent ID: 9696530
Date: 2017-07-04
CPC Classifications: G02B,G03B

Claim:
1. A zoom lens system comprising: a plurality of lens groups, wherein a specified lens group of said plurality of lens groups is a lens group which is configured to vary a distance between said lens group and an adjacent lens group upon zooming, a distance between lenses of said specified lens group not changing during zooming wherein said specified lens group of said plurality of lens groups includes a focusing lens group which is moved in the optical axis direction in a focusing operation; a normal photography mode in which focusing is carried out from infinity to a predetermined photographing distance by continuously moving said focusing lens group of said specified lens group in the optical axis direction; and a shifting mode which shifts from said normal photography mode to a macro photography mode by moving at least one lens element of said specified lens group other than said focusing lens group when focusing on an object at a photographing distance that is shorter than said predetermined photographing distance of said normal photography mode, wherein, when said zoom lens system is in said macro photography mode, focusing is carried out from said predetermined photographing distance to a minimum photographing distance by continuously moving said focusing lens group of said specified lens group in the optical axis direction.