Complex sentence: KSBW uses HD studio cameras and HD field cameras for its newscasts; however, the field video is downconverted to widescreen SD in the control room due to its editing equipment only being capable of SD.
Split into simpler sentences: KSBW uses HD studio cameras and HD field cameras for its newscasts. While most of the studio cameras and video footages are shot in HD, the field video is downconverted to widescreen SD in the control room due to its editing equipment only being capable of SD.