The invention discloses a five-piece optical lens for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens which can have positive refractive power, and an object-side surface thereof can be convex; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power, wherein both surfaces of each of the aforementioned lenses can be aspheric; and a fifth lens which can have negative refractive power, wherein an image-side surface thereof can be concave, and both surfaces thereof are aspheric; at least one surface of the fifth lens has an inflection point thereon. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.