Zoom lens and imaging apparatus

A zoom lens, substantially consisting of:

• a first lens group having a negative refractive power;
• and
• a second lens group having a positive refractive power, provided in this order from an object side;
• the first lens group and the second lens group being moved to change magnification;
• the first lens group substantially consisting of a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, in this order from the object side;
• the second lens group substantially consisting of four lenses;
• and
• the zoom lens satisfying the following conditional formulae:
• 0.00<|f1/f2|<1.04 (1-5)
• −1.00<f1/fG12<0.16 (2-3)
• wherein f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, and fG12 is the focal length of the second lens from the object side within the first lens group.