Zoom lens capable of close range photography

An optical zoom lens system capable of close range photography, the zoom lens system defining an object side, an optical axis, a zooming loci and an image plane in the zoom lens, in order from the object side, comprising:

• a first lens group having a weak refractive power;
• a second lens group having a negative refractive power;
• and
• a third lens group having a positive refractive power;
• wherein the first lens group comprises, in order from the object side:
• a first lens group first positive lens group, a first lens group second positive lens group and a first lens group negative lens group;
• the first lens group is fixed while the second lens group moves along a convex locus of the zooming loci with respect to the image plane and the third lens group moves from the image side toward the object side during zooming from the maximum wide-angle state to the maximum telephoto state;
• at least one of the first lens group first positive lens group, first lens group second positive lens group and first lens group negative lens group moves along the optical axis during focussing from objects at infinity to at a close-range;
• and, the zoom lens system satisfies conditions:
• 0.7<.vertline.f1112.multidot.F23/(f13.multidot.F).vertline.<1.5 0.3<.vertline.f13/f1112.vertline.<1.1
• where f1112 is a combined focal length of the first lens group first positive lens group and the first lens group second positive lens group, f13 is a focal length of the first lens group negative lens group, F23 is a combined focal length of the second lens group and the third lens group and F is a focal length of the zoom lens system.