A new magnesium alloy body with changed button layout was introduced, including relocating the on/off switch to the bottom rear of the camera where it could easily be switched off accidentally. New LCD panels were introduced. The on/off switch was later moved back to the upper-left of the camera's rear with the Canon 7D. Flash strobes were used instead of a dedicated autofocus assist lamp. The shutter and mirror were also quieter than the D60 systems. An upgraded autofocus system, using a more-sensitive and wider-area 7-point array similar to the Canon EOS 30V was also included.