Originally posted by Rondec I think the point is that people who are familiar with mirrorless assume that it uses a new mount that is incompatible with previous lenses without an adapter. NEX line of cameras is compatible with A mount lenses as well, but only with a fairly expensive adapter. Pentax could have done the same, but didn't.
Well, Pentax built an SLT, but without PDAF and without a viewfinder, so they are now trying to justify it by calling it a MILC that can take legacy lenses.
But marketing strategy aside, this is a non issue. The only people that care about legacy lenses are those that have them already, and they can figure out such details on their own.