Small-sized three-unit zoom lens

A three-unit zoom lens comprising:

• in order from an object side,
• a first lens unit with positive refracting power;
• a second lens unit with positive refracting power;
• and
• a third lens unit with negative refracting power,
• spaces between individual lens units being changed when a magnification of said zoom lens is changed, extending from a wide-angle position to a telephoto position,
• wherein said first lens unit consists of a single lens element with positive refracting power, directing a concave surface toward said object side.

A camera including:

• a three-unit zoom lens comprising:
• in order from an object side,
• a first lens unit with positive refracting power;
• a second lens unit with positive refracting power;
• and
• a third lens unit with negative refracting power,
• said first lens unit, said second lens unit, and said third lens unit being moved toward said object side so that when a magnification of said zoom lens is changed, extending from a wide-angle position to a telephoto position, a space between said first lens unit and said second lens unit, after being increased as said first lens unit and said second lens unit are moved from said wide-angle position toward a proximity of a middle position, is decreased as said first lens unit and said second lens unit are moved toward said telephoto position, and a space between said second lens unit and said third lens unit is also decreased accordingly,
• wherein said three-unit zoom lens has a variable magnification ratio of 2 or higher and said first lens unit consists of a single lens element;
• a field stop located on an image side of said zoom lens;
• and
• a finder provided to be independent of said zoom lens.

A camera including:

• a three-unit zoom lens comprising:
• in order from an object side,
• a first lens unit with positive refracting power;
• a second lens unit with positive refracting power;
• and
• a third lens unit with negative refracting power,
• spaces between individual lens units being changed when a magnification of said zoom lens is changed, extending from a wide-angle position to a telephoto position,
• wherein said first lens unit consists of a single lens element with positive refracting power, directing a concave surface toward said object side;
• a field stop located on an image side of said zoom lens;
• and
• a finder provided to be independent of said zoom lens.