Need some help with vegas 13

[Veno]

Hi, I have around 400 pictures and i have to make an animation out of them, but when i put them in vegas, they are too long and i have to cut each so the final video doesn't take forever,
is there a way i can cut them all at once?

[Blaze]

options > preferences > editing tab > still image length

[FrankInsanity]

options > preferences > editing tab > still image length

 ty, also, check out using a little motion blur to make it more "realistic"