redo restore backup

i backup my iphone 4s and now i trasferred my files to iphone5. i already take some pictures and video using my iphone 5. today, i connected my iphone 5 to my laptop and it ask me to backup or backup restore. i mistakenly chose backup restore so my iphone5 is recent picture and video was gone and now capture my ols back up from my iphone 4.

Can i redo backup restore so i can retrieve my recent picture and videos from my iphone5s???

please help!!!

Thanks!