Reader photos: Southern California Moments, Day 220
Defective frame: Toby Hancock takes a Polaroid of Los Angeles City Hall on July 2. Here's Toby on the cracked effect of his photo:
It's due to a manufacturing flaw in this particular batch of Impossible Project Black Frame PX 600 UV+. It's known as "poor pod" and was sold at a heavily discounted rate on the understanding that some images would not develop properly. Basically, this type of Impossible Project / Polaroid film has 3 chemical pods that are activated when the photo is ejected. In these poor pod packs one or more of the pods don't spread over the image completely and leaves sections undeveloped.