:00-:07 -- For seven seconds, there is nothing on the screen but darkness. Most times lighting hints toward the tone of a clip in general; however, the lack of light in "I'm Ready" leaves the viewers questioning what to expect.
:58 -- After Justin says "I'm ready" the screen lights up fully. This choice in lighting, which contrasts most of the clip, suggests everything is clear for him when he's recording his music. The viewers get to actually see Justin, rather than his back, in this moment.