Wow, so many newbies in the comments. Welcome to the "we fucking hate this stupid fucking arc and want it to end but we know it'll go on for another fucking volume so we're extra sad" club. Give it a 1 and enjoy it as the trashfire that it is.
New Arisa takes the photo in portrait to capture both Mari-san and the animal. Old Arisa films in landscape because she only cares about Mari-san looking cute. Deep and totally intended.
Okay, this is getting dumb. Lily's often acting like she's not blind at all. This is far from the first example, and I'm not talking about the colour. It feels like the mangaka keeps forgetting about their own gimmick.