Due to the advancements in today's photographic equipment technology and the image resolution of modern cameras, manufactures no longer have the ability to make cameras and lenses that generically work together right off the shelf. Because of this it is not only necessary but imperative that camera bodies and lens are matched together through the process of micro adjustment, Af fine tune, or lens calibration.
We hear all the time after performing these services, "oh I thought it was me". Don't worry, it's not! Send us your camera and lenses and we will calibrate for sharpness.