Eyewitnesses of a crime are often shown a series of mugshots by police to confirm or deny the identity of a suspect. These photos, referred to as a photo array, are typically shown shortly after a ...

I need to take four photos and arrange them in a 2x2 format. Someone in my lab suggested Powerpoint. I tried doing this in Powerpoint - but it downgrades the photos to 96dpi. I'm a complete newb to ...