This is an 8mm Allen Key taken with a macro lens at almost full magnification. The 'normal' picture to the right should give you a sense of the powerful capabilities of macro lenses. The normal picture is taken with a 50mm lens which is equivalent to what the human eye sees. At full magnification, a macro lens can fill the field of view with a grain of rice or a scary insect's eyeball.
Above image was taken with a normal lens.
The image to the left was taken with a macro lens at 3 times magnification. The yellow light running through the right hand side is a reflection of ceiling lights.