One more thing that feels odd is the placement of volume rocker, although, it helps while zooming in and out in viewfinder while holding it in horizontal position to click a picture. (techradar.com)
Ayano Yamane was even aware about the high bids for the English version of Viewfinder at Ebay. (kuriousity.ca)
The camera powered manages things like rendering image on viewfinder. (dealntech.com)