Originally posted by reh321 This discussion looks kind of like the m43 discussion on the mirror-less subforum.
I have done R&D for a small company - juggling my priorities trying to complete multiple projects. It isn't fun or necessarily productive. Ricoh has only so much in resources - people, machinery, and money. They already have three mounts - 645, K-mount, Q-mount. That is why I would look into trying to move existing projects in a direction that they could be repurposed if necessary, while still pushing improved products out the door.
But that is just me. As they say around here "I don't have a dog is this hunt".
I agree, though it looks like Ricoh has invested quite a bit. 2 new cameras soon? 3 new lenses? What has happened to the a camera a year Pentax that I used to know?
As for the mirror... I suppose it could be done, though the main reason to use it would be to do something like the DSLT cameras Sony used to make. But they did that so they had PDAF with an EVF. These days you can simply put the PDAF sensor onto the imaging sensor, so... Another use case could be to improve the AF/MF performance. Basically you could either let more light get to the AF sensor when it is too dark, so the AF can still get a fix (but the viewfinder would basically be black), or redirect all the light into the viewfinder for a brighter viewfinder, like the ones used in the pre-AF days. Using this tech to eliminate the mirror movement seems less likely, because behind the mirror sits the PDAF sensor. If you were to do it, you can't have a dedicated PDAF sensor but would have to use one that sits on the image sensor. That one has to be smaller I believe, so it isn't as light sensitive in the first place. Basically the OVF would go dark when you want to focus, because the AF needs the light.
Finally it might be possible to put a transparent screen somewhere in the OVF (covering all of it). It can be used to overlay information, like with Nikon DSLRs, just much fancier. Then underneath the mirror perhaps a white OLED light panel which can act as a backlight for the screen when you are in live view mode. AF would be a problem again, and light leaks, etc. The chance of this happening is 0%, though I would like it if they can fix the AF.