Canon 7d slow mo

How would you be able to do a slow motion clip but have it broken up? I'm looking to shoot say someone weight lifting and have it normal speed but right when the weight goes up I want to slow it down and when the weight goes down I would like to put it back to normal. I am using Sony Vegas 10. I was thinking of clipping that part but idk if it would be right since the whole clip would be shot in 60 fps.

I have only used iMovie.

In iMovie you can select and part and clip it so that it is a seperate clip and then adjust the speed of that section to 0.5 speed it will then last twice as long and be played back at 30 fps not 60 fps.

if you export the fonal video at 30 fps, it will all be consistant if you do it at 60fps, there will be a framerate drop during the lift but it will not be noticeable!

Vegas will do the same either speeding up or slowing down a clip. Cut the clip and adjust the speed in properties. Vegas will interpolate the missing frames to create a slo mo if required. It's not as good as a dedicated package but does an adequate job if you don't push it too far.

You can do it either way, slow the clip down or speed it up and there are advantages and disadvantages to both.

If you record at normal speed and slow down the desired bit you can still record sound and wont compromise your image size. The down side is the slomo won't be as crisp and you will be pushing your luck to go beyond half speed. If you record at 60 fps (assuming you set your project to 30 fps) you could go to 1/4 speed.

IIRC Vegas will default to create the project in what ever frame rate you provide the media files so it may well adjust to play a 60fps track to normal speed if that is all you give it to work with, I cant remember.

OK awesome once I get my 7d in I'm gonna give it a shot. Should be here today.