Real-image finder having variable power

A real-image finder having a variable power comprising an objective lens system of positive power, a condenser lens, an image erecting systems and an ocular lens system, in this order from an object side, wherein;

• said objective lens system comprises at least three lens groups including a first lens group of positive power, a second lens group of negative power, and a third lens group of positive power, in this order from the object side;
• the second lens group being moved towards an image side and the third lens group being moved toward an object side, when the magnification changes from a wide angle side to a telephoto side, so that the distance between the first lens group and the second lens group increases, the distance between the second lens group and the third lens group decreases, and the distance between the third lens group and the condenser lens increases, and;
• the real-image finder meets the requirements defined by the relationships:
• 0.5<.vertline.m.sub.2W .vertline.<1.0
• 1.1<.vertline.m.sub.2T .vertline.
• 0.5<.vertline.m.sub.3W .vertline.<1.0
• 1.1<.vertline.m.sub.3T .vertline.
• wherein,
• m.sub.2W represents a lateral magnification of the second lens group at the wide angle end,
• m.sub.2T represents a lateral magnification of the second lens group at the telephoto end,
• m.sub.3W represents a lateral magnification of the third lens group at the wide angle end, and
• m.sub.3T represents a lateral magnification of the third lens group at the telephoto end.