He probably had the camera on a stand and had it to go off in intervals. It wouldn't surprise me since he does own a photo studio.
Ooh that's true! Didn't thought about that (￣∇￣")
* Didn't think
The mangaka did ლ(´ڡ`ლ)
it was done with a camera on a tripod with an automatic timer and auto focus
Uhhh just wondering.... Who took the pictures?? (First story especially the last pic)