I was assigned to take indoor academic seminar picture for newsletter in one university lecture theatre without using flash. The spot lights on podium were daylight color temperature fluorscent light tube (Kino) while the lecture theatre ceiling light were warm fluorescent light tubes. After taking wide angle picture to cover speakers and students, there was too color temperature appeared on the picture. The lighting on speaker was white but the rest of the room was warm white. How to make camera adjustment before shooting ? I was using Nikon D300 (auto white balance) and Sigma 10-20 mm.