An imaging lens includes: a movable lens group with total positive refractive power, including first and second sub lens groups; and an ever-fixed lens group that is ever-fixed. The imaging lens has first and second focusing modes for focusing operation in first and second focus ranges, respectively. The first focus range covers from an object at an infinite distance to an object at a first finite distance, and the second focus range covers from an object at a second finite distance shorter than the infinite distance to an object at a third finite distance shorter than the first finite distance. The first sub lens group is configured to be fixed and the second sub lens group is configured to travel, during each of the first and second focusing modes. Traveling of the movable lens group toward object plane allows switching from the first to second focusing modes.