Shooting on my DSLR just feels dated even though it's a new model. I shouldn't have to guess exposure and rely on a mechanical mirror device to bounce light up to my eye. This is not modern technology. There has to be a better way. I personally cannot wait to switch to a mirrorless system. And if the Canon FF mirrorless doesn't turn out to be a good option, I'm gonna grab a A7III. Will probably keep my 6DII but just as a backup. That is until I want a mirrorless as a backup as well lol.
I think we are in this weird intermediate technology state, where off sensor instruments like PDAF and metering hold some advantages but require a mirror, and image-sensor-based analysis holds some advantages but requires the mirror be out of the path.
One admittedly kludgey solution would be an SLR with an EVF (say at the top left rear of the camera). It could use proximity sensors to automatically lock up the mirror when you put your eye to the EVF, or put it down when you put you eye to the OVF. While it would look weird (not that I particularly care how cameras appear), it would at least give the advantages of both in a single box (less being narrower by the amount of the mirror box) until such a time as some technology overcomes the inherent advantage of “big bright” sensors.
I used a mirrorless camera (a7rii) along side my canons for a couple years. Many of its downsides have been remedied in the iii (which I rented but wasn’t compelled to buy). My experience is largely summed up as such:
*In bright manual focus situations, zoom in the EVF is a significant advantage
*In low light manual focus situations (e.g. studio photography with flash), mirror down SLR is advantageous.
*In automatic focus situations, mirror up has some tracking advantages, but it suffers tremendously in low light and for quick action.
If I bought a iii, I’d still grab an SLR for low light use and action photography.