On Mon, Jan 8, 2018 at 4:31 PM, Tina Manley <tmanley at gmail.com> wrote: > I'm taking a T23/2.0 as my lightest, walk-around lens. It weighs almost > nothing and is still autofocus on the SL. That's cool - does the SL automagically switch to using an APS-C sized subset of the sensor when that lens is mounted?