image overlaying?

[frederickson333]

does anyone know how to do it? what i did was i took a bunch of pictures with my tripod and i had my friend walk around and do different stuff. so the background is the same but my friend is in a different spot in each picture. and what i want to do is overlay them so the background still looks the same but my friend is in the picture like 4 times.

help would be appreciated. and ill post the pictures up when im done, thanks!

 

[Peano]

Stack the images in one Photoshop file and use layer masks to reveal the subject in various positions. Like this (I'm assuming you understand how masks work) ...