An endoscope configured to measure a specimen using a pattern projection image of the specimen on which a light and shade pattern of light is projected, the endoscope comprising: an insertion unit; an image capturing unit installed at a tip section of the insertion unit and configured to acquire an image of the specimen; an illumination unit having a first light source configured to emit illumination light to illuminate an observation field of vision of the image capturing unit; a pattern projection unit having a second light source configured to emit projection light to project the light and shade pattern on the specimen; and a control unit configured to control an operation of acquiring the image by the image capturing unit, an operation of emitting the illumination light from the illumination unit, and an operation of emitting the projection light from the pattern projection unit, characterized in that in the control unit, based on a time (Wa) from starting of emission of the illumination light from the first light source until light quantity of the illumination light arrives at a light quantity level needed to acquire the image, and a time (Wb) from starting emission of the projection light from the second light source until light quantity of the projection light arrives at a light quantity level needed to acquire the image, one of the illumination unit and the pattern projection unit, which has a long time until the light quantity arrives at the light quantity level needed to acquire the image, is operated first so that a first image of the specimen is acquired by the image capturing unit, and the other of the illumination unit and the pattern projection unit, which has a short time until the light quantity arrives at the light quantity level needed to acquire the image, is operated after acquisition of the first image so that a second image of the specimen is acquired by the image capturing unit. an insertion unit; an image capturing unit installed at a tip section of the insertion unit and configured to acquire an image of the specimen; an illumination unit having a first light source configured to emit illumination light to illuminate an observation field of vision of the image capturing unit; a pattern projection unit having a second light source configured to emit projection light to project the light and shade pattern on the specimen; and a control unit configured to control an operation of acquiring the image by the image capturing unit, an operation of emitting the illumination light from the illumination unit, and an operation of emitting the projection light from the pattern projection unit, characterized in that in the control unit, based on a time (Wa) from starting of emission of the illumination light from the first light source until light quantity of the illumination light arrives at a light quantity level needed to acquire the image, and a time (Wb) from starting emission of the projection light from the second light source until light quantity of the projection light arrives at a light quantity level needed to acquire the image, one of the illumination unit and the pattern projection unit, which has a long time until the light quantity arrives at the light quantity level needed to acquire the image, is operated first so that a first image of the specimen is acquired by the image capturing unit, and the other of the illumination unit and the pattern projection unit, which has a short time until the light quantity arrives at the light quantity level needed to acquire the image, is operated after acquisition of the first image so that a second image of the specimen is acquired by the image capturing unit.