Fujifilm Instax Mini 9 Lime Green Instant Film Camera

This was only used for a few hours for an event so is in excellent condition. However it does have a flaw which is that on the indoor setting it doesn’t develop, see last picture, the film comes out blank. I tried all the settings and different rolls of film and it only happened with the indoor setting, all others work fine. It was out of warranty or I would’ve returned it. $70 new