It's good that you asked, and Rukbat's answer is correct. (You can also effect something, which means to put it into effect, as opposed to affecting something, which means to have an effect on it.) And just for future reference, the quickest and most accurate way to answer questions like that is to look up the words in a dictionary, which you can do from your browser just by highlighting a word and then clicking to search for it.
As for the Jello effect, I'm not sure what's going on. Is the camera being shaken at the time? Are you using the digital zoom, or switching to the zoom camera? If you stay zoomed in, does the quiver settle down or keep going?