A microscope apparatus capable of removing liquid from an observation
field of view of a dry objective lens, when an immersion objective lens
is switched to the dry objective lens, is provided. The microscope
apparatus includes a specimen XY stage on which a specimen is placed, a
dry objective lens and an immersion objective lens that collect light
from the specimen, a movable revolver that selectively disposes one of
these objective lenses at a position facing the specimen, and a control
unit that controls the specimen XY stage and movable revolver such that
the relative positions in the XY direction are changed until the
immersion objective lens is disposed at a non-observation region of the
dry objective lens, prior to switching of these objective lenses.