Surface integrity of machined parts plays a crucial role in their use, efficiency, comfort and safety. The trend of more effective and low-consumption products forces the producers to reduce weight and dimensions of the industrial parts so the requirements on the machined surface quality evaluation is more important from many aspects. The booming trend in optical non-contact techniques seems to be a serious challenge to the traditional tactile methods. The paper deals with selected contact and non-contact evaluation methods of machined surface (Form Talysurf Intra, Taylor Hobson and IFM G4, Alicona) and relations between profile and 3Dsurface parameters when finishing face turning of AlCu4MgSi in a variety of feed rates. A good correlation for many amplitude and functional surface parameters has been found. Nevertheless, the paper reveals a big power of the optical focus variation technique for quality and functional predictions assessments.