I (foolishly) ventured into replacing a broken SD card door on my K-5iis. This is a very scary proposition as the entire case must be removed to access the pin which is the door hinge. It was especially scary for this old man who hasn't messed with anything remotely electronic since building a crystal radio when a Cub Scout back in the 1950s.
Removing the case, my observation was that there is not one cubic millimeter of extra room in that camera. I mean no space at all. Nada. Nil. It is just crammed. I wonder if cameras with slightly larger bodies have more room or are just not as efficient at their use of space.
Anyway, today I finally reassembled the camera and prepared for the moment of truth. I put in a battery and an SD card, turned it on, and watched lights light and displays appear. Then I put on a 50mm lens. It focused and the shutter snapped. On the back display appeared an image. Life is good.
O frabjous day! Callooh! Callay!