Sony 28-75mm f/2.8 SAM (SAL-2875) - Review / Lab Test
4 August 2011
Conclusion: The Sony 28-75mm f/2.8 SAM is an affordable alternative to the Zeiss ZA 24-70mm f/2.8. Technically it isn't all that far away from its bigger brother - both have a weakness at max. aperture specifically with respect to the corner resolution. However, the Zeiss is generally more snappy here (higher contrast) - this aspect is not exactly a strength of the Sony lens.