Take all 8 photos throughout Chapter 2 to unlock.
These are:
#1 Field of View - at the girls dorm
#2 Full Exposure - outside the girls dorm
#3 Processor - outside the diner
#4 Image Stabaliser - outside the diner
#5 Compressed - inside the diner
#6 Pixelated - at the junkyard
#7 Dynamic Range - at the junkyard (don't get too close to the doe)
#8 Colorized - at the junkyard, when Chloe is sitting on the hood of the car.