Abstract: In an Albada type finder 10 applied to a camera capable of photographing either the full size or the panoramic size, when the panoramic size is specified with a change-over switch 24, a lever 58 rotates clockwise around a pin 70, and then a lever 60 is pushed by the opening 74 and moves downward. And, rod 84 pushes a lever 62, whereby the rod 84 rotates counterclockwise around pin 86, therefore, axis 40 rotates clockwise against the biasing force of a spring 41 and axis 42 rotates counterclockwise against the biasing force of the biasing spring 43. With this arrangement, a pair of mask plates 16 and 18 enter the optical path between a half mirror 32 and an eye piece 24 in the vicinity of the half mirror 32 in the Albada type finder 10. Therefore, a light reflected outside of a panoramic size field frame of the eye piece 34 is absorbed by the mask plates 16 and 18, so that the outside of the field frame of the panoramic size can be blackened during the panoramic size shot.