How much does the Tau2, Quark2 camera weigh?

Because the weight is dependent on the lens (or no lens), all of the weights are detailed at the Optics tabs for both Tau2 and Quark2 cameras.

Most Tau2 cameras with wide field of view (WFoV) lenses weigh between 70-72g. Weights of the narrow field of view lens (NFoV) configurations can be seen at the Tau2 web page under the Optics tab, bottom of page.

Quark2 weights can be seen here.