Zoom lens and imaging apparatus having the same

An imaging apparatus comprising:

• a zoom lens;
• and
• an image sensor configured to receive an image formed by the zoom lens,
• wherein the zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear group having a positive refractive power as a whole including at least one lens unit,
• wherein during zooming from a wide-angle end to a telephoto end, a distance between adjacent lens units changes,
• wherein the first lens unit includes at least three negative single lenses, and
• wherein the following conditional expressions are satisfied:
• 1.93<|f1|/fw<6.50,
• 0.10<fG1N/f1<2.00, and
• 1.80<ndLN<2.20,
• where f1 is a focal length of the first lens unit, fw is a focal length of the zoom lens at the wide-angle end, fG1N is a focal length of a negative lens G1N closest to the object side in the first lens unit, and ndLN is a refractive index of a negative lens LN disposed closest to the image side among the negative lenses included in the rear group.

A zoom lens comprising, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear group having a positive refractive power as a whole including at least one lens unit,

• wherein during zooming from a wide-angle end to a telephoto end, a distance between adjacent lens units changes,
• wherein the first lens unit includes at least three negative single lenses,
• wherein the rear group includes, in order from the object side to the image side, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power, and
• wherein the following conditional expressions are satisfied:
• 1.93<|f1|/fw<6.50, and
• 0.10<fG1N/f1<2.00,
• where f1 is a focal length of the first lens unit, fw is a focal length of the zoom lens at the wide-angle end, and fG1N is a focal length of a negative lens G1N closest to the object side in the first lens unit.

A zoom lens comprising, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear group having a positive refractive power as a whole including at least one lens unit,

• wherein during zooming from a wide-angle end to a telephoto end, a distance between adjacent lens units changes,
• wherein the first lens unit includes at least three negative single lenses, and
• wherein the following conditional expressions are satisfied:
• 1.93|f1|/fw<6.50,
• 0.10<fG1N/f1<2.00, and
• 80<ωw<100,
• where f1 is a focal length of the first lens unit, fw is a focal length of the zoom lens at the wide-angle end, fG1N is a focal length of a negative lens G1N closest to the object side in the first lens unit, and ωw (degree) is a half angle of view when an object at infinity is focused at the wide-angle end.