Originally posted by stevebrot The mirror is in the way. A pellicle mirror might work*, but the light loss to the optical finder would be significant.
Steve
* Google Canon Pellix
Yeah, mirror-less for a traditional EVF, but an accessory type mounted or secondary EVF along with a traditional OVF is definitely doable implemented just like the live-view on LCD. You could switch between EVF and OVF with the mirror moving into the needed position, based on your selection.
Translucent mirror would likely be needed barring a technical breakthrough, for a hybrid OVF/EVF. I'm sure Pentax could engineer a hybrid solution, if it met their standards of high quality/performance and it made sense from a market stand-point. Those guys are pretty darn sharp!