This dome camera has a Sony Super HAD CCD chip which makes it extremely sensitive to light and perfect for low-light conditions. Dome camera is high resolution which makes your image more clear. Also built-in this dome camera is an auto iris lens which automatically adjusts to changes in light. Manual zoom controls are accessed by removing the dome cover and adjusting the zoom. Dip switch controls (on the back of the camera AI, AGC, AWB, BIC, FL) allow you to change various image settings.