The "thickness" Of Oil Painting And The Application Of Related Techniques In My Creation

Oil painting as a material material,it must have thick and thin,pigment thin is the painter painting when the active treatment of the results,but also the artist’s aesthetic value of the embodiment.Oil painting as a technique it is not directly formed,but after a long evolution.The oil paintings we use now have certain requirements in the thickness of the principles and techniques,so do we ask for the same before the Impressionists?The same is true in the Renaissance?Take this as the clue,time is the main direction,explore the change of thickness in oil painting.