A camera lens and an image capturing device using the same. The camera lens comprises a lens-barrel fixing-base, a driving barrel, a focusing lens-barrel and an elastic member. The lens-barrel fixing-base has a hollow part, which has a first supporting part. The first supporting part has a connecting part. The driving barrel has a groove formed at an inner wall of the driving barrel. The focusing lens-barrel has a guiding part, which is inserted into the groove for allowing the focusing lens-barrel to be axially moved in the driving barrel. The focusing lens-barrel has a second supporting part. The elastic member is a hollow-ring structure setting between the lens-barrel fixing-base and the focusing lens-barrel. One end of the elastic member is positioned against the first supporting part and the another end of the elastic member is positioned against the second supporting part.