There are tons of random quests in Infinity Nikki and the “Forced Perspective” quests are some of the trickiest; in “Forced Perspective: Capturing the Thief,” you’ll need to find the right angle to put a dastardly villain behind bars. Using Momo’s camera, you’ll need to find the right angle to complete an optical illusion. Unfortunately, the game’s detection isn’t as good as it could be, making completing the quest harder than it sounds.

https://screenrant.com/infinity-nikki-capture-thief-quest-complete/