Optical disc drive beam on a smaller spot size and to read smaller pits. DVD lens supports a different focus for CD or DVD media with same laser. With the newer Blu-ray disc drives, the laser only has to penetrate 0.1 mm of material. Thus the optical assembly would normally have to have an even greater focus range. In practice, the Blu-ray optical system is separate from the DVD/CD system. During the times of CD writer drives, they are often marked with three different speed ratings. In these cases, the first speed is for write-once (R) operations, the second speed for re-write (RW)
What to Do with Daylight status. "What To Do With Daylight" was also re-released as a two disc CD+DVD "Special Edition" in 2004, following the albums success. The first disc was the album with the second disc being a live DVD of four songs from the album. This set also came with a slipcase cover with a different photo of Fraser. The DVD was filmed and recorded live at The Pumphouse, Takapuna, Auckland on 2 April 2004. Live DVD track list: "What To Do With Daylight" debuted at number one on the New Zealand RIANZ Album Chart. It was also certified Gold in the first