The present invention discloses a zoom lens including:
- a first lens unit having negative optical power, the first lens unit
having a negative lens element on a closest side to an object;
- a second lens unit having positive optical power, the second lens unit
having two or more positive lens elements;
- a third lens unit having positive optical power; and
- a fourth lens unit having positive optical power, the fourth lens unit
consisting of one positive lens component, said units arranged in the order presented
from an object side to an image side,
- wherein at least the second lens unit and the third lens unit are moved
toward the object for zooming from a wide angle side to a telephoto side such that
a space between the first lens unit and the second lens unit is smaller, a space
between the second lens unit and the third lens unit is smaller, and a space between
the third lens unit and the fourth lens unit is larger at a telephoto end than
at a wide angle end.
Thus, a zoom lens having fewer lenses, a compact body, and good optical performance,
and a camera using the same can be realized.
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