I use in everyday use, the zoom lens SEL-P1650, the Zoom SEL-1670Z from Zeiss is too expensive with 800. I once had tried the kit lens of the alpha 7 SEL-2870, which convinced me only in the telephoto range from 50 mm. Therefore I use the fixed focal lengths of Sigma 18, 30 and 60 mm. The latter is, as well as the testing of various media statements, the best of the three lenses. I highly recommend it. Enclosed pictures with the 60 mm Sigma.