Agra, January 23 (IANS): Taiwanese smartphone maker ASUS on Friday extended its portfolio of Zenfone series, launching ASUS Zenfone Zoom — an advanced photography-focused smartphone for Indian customers. Designed for a photographer’s delight, the smartphone is equipped with 13-megapixel primary camera that has a 3x optical zoom with industry leading camera features. The device has unprecedented hardware technology for the clearest and sharpest images ever captured through a smartphone, the company said, adding its 10-element HOYA lenses kit gives a total of 12x zoom and 5 centimetre macro focus.