Camera lens

1. A camera lens comprising, arranged sequentially from an object side to an image side:

a first lens with positive refractive power;

a second lens with negative refractive power;

a third lens with positive refractive power;

a fourth lens with negative refractive power; and

a fifth lens with negative refractive power; wherein the camera lens satisfies following conditions (1)˜(3):

0.30≤ f 1/ f≤ 0.47  (1)

3.5≤( R 7+ R 8)/( R 7− R 8)≤−1  (2)

−3.50≤( R 9+ R 10)/( R 9− R 10)≤−1.50  (3)

where,

f: overall focal distance of the camera lens;

f1: focal distance of the first lens;

R7: curvature radius of the fourth lens' object side surface;

R8: curvature radius of the fourth lens' image side surface;

R9: curvature radius of the fifth lens' object side surface;

R10: curvature radius of the fifth lens' image side surface.

2. The camera lens as described in claim 1 further satisfying following condition (4):

−1.00≤ f 2/ f≤− 0.50  (4)

where,

f: overall focal distance of the camera lens;

f2: focal distance of the second lens.

3. The camera lens as described in claim 1 further satisfying following condition (5):

1.20≤ f 3/ f≤ 3.50  (5)

where,

f: overall focal distance of the camera lens;

f3: focal distance of the third lens.

4. The camera lens as described in claim 1 further satisfying following condition (6):

−2.50≤ f 4/ f≤− 1.00  (6)

where,

f: overall focal distance of the camera lens;

f4: focal distance of the fourth lens.

5. The camera lens as described in claim 1 further satisfying following condition (7):

−2.50≤ f 5/ f≤− 1.00  (7)

where,

f: overall focal distance of the camera lens;

f5 focal distance of the fifth lens.

6. The camera lens as described in claim 1 further satisfying following conditions (8)˜(10):

0.436≤ f 1/ f≤ 0.47  (8)

−3.50≤( R 7+ R 8)/( R 7− R 8)≤−1.7  (9)

1.20≤ f 3/ f≤ 2.40  (5)