[Klaus]

@Kunzite: You blame me to spread falsehoods, this is both disrespectful and untrue.

Untrue?
Fact #1: there are many DSLRs with much better autofocus than the released Pentax ones.
Fact #2: eye detection with a DSLR, in OVF mode, is possible - and implemented on the K-3iii (AFAIK Nikon has that as well, not sure if Canon can do better than face detection).

Fact #3: Eye detection in DSLRs doesn't make any sense - albeit it's surely possible. It does require the main sensor plus a secondary, relatively high-resolution sensor for AI analytics. So a camera design that already requires a couple of strange workarounds (mirror, prism, AF sensor, exposure meter) gets another one.

DSLRs are a thing of the past. But ... why not? Some have re-started using film SLRs (which makes a lot more sense to me than DSLRs).