Imaging lens and imaging apparatus

An imaging lens consisting of, in order from the object side:

• a first lens having negative refractive power;
• a second lens having positive refractive power;
• a third lens having negative refractive power;
• a fourth lens having positive refractive power;
• and
• a fifth lens having positive refractive power, wherein the following conditional expressions are satisfied:
• Nd3<1.75 (1);
• νd3<27 (2);
• 0.0≦(R3+R4)/(R3−R4) (4);
• and
• f12/f<1.5 (5), where
• Nd3 is a refractive index of the material of the third lens for d-line,
• νd3 is an Abbe number of the material of the third lens for d-line,
• R3 is a curvature radius of an object-side surface of the second lens,
• R4 is a curvature radius of an image-side surface of the second lens,
• f12 is a combined focal length of the first lens and the second lens, and
• f is a focal length of an entire system.