HaLeiVi, it’s only assur if it’s ?????? ?????? ????.
They say a story about the Manchester Rosh Hayeshiva zt”l that they showed him a family photo, and he asked who a certain female in the picture was, and they told him it was his daughter-in-law. Apparently, he was makpid not to look at a woman’s face, but not makpid on a picture.