A viewfinder is a small window or device on a camera that shows you the exact image that the camera will capture when you take a picture. Full definition
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)