The filter thread size of Sony DT 16-80mm F3.5-4.5 ZA Carl Zeiss Vario-Sonnar T is 62mm.
Below are links to the filters that we recommend you to consider for your Sony DT 16-80mm F3.5-4.5 ZA:
Read our detailed Sony DT 16-80mm F3.5-4.5 ZA Carl Zeiss Vario-Sonnar T Review