Carl Zeiss (Oberkochen, Germany, www.zeiss.de) recently added four new sizes to its UV and POL filter sets. They include 52mm, 55mm, 62mm and 77mm. The company also expects to introduce three additional sizes in January 2012. Carl Zeiss T* UV filters block ultraviolet light, yet are fully transparent for visible light. Its T* POL filters reduce flare and reflections on non-metallic surfaces, which intensifies image contrast and color saturation.