Disclosed is a two-group-type zoom lens, comprising: a first lens group (G1) having negative focal power, an aperture diaphragm (S) and a second lens group (G2) having positive focal power, these being sequentially and coaxially arranged from an object side to an image side. The first lens group (G1) comprises a first meniscus lens (L11) having negative focal power, a first biconcave lens (L12) having negative focal power and a first biconvex lens (L13) having positive focal power, these being sequentially and coaxially arranged from the object side to the image side. The second lens group (G2) comprises a second biconvex lens (L21) having positive focal power, a second meniscus lens (L22) having positive focal power, a second biconcave lens (L23) having negative focal power, a third biconvex lens (L24) having positive focal power, a third meniscus lens (L25) having negative focal power, a fourth meniscus lens (L26) having negative focal power and a fourth biconvex lens (L27) having positive focal power, these being sequentially and coaxially arranged from the object side to the image side.