DSLR settings?

Hello.

I want to make my animation using my DSLR and then importing the shots into Final Cut. I use iStopMotion for the Onion skinning during shooting.
But, it seems that if ISM takes the shot, there is no shot on the DSLR. So I have nothing to import to FC.
I could import the ISM shots into FC, but they are not the same quality as the DSLR shots?

Is there a setting I am missing on ISM, or the camera (Nikon D5200)? I’m just about ready to buy the software, but if it won’t allow my camera to record the shots, it will be of no use to me.

Thanks, crow