Indoor low light, a mix of 15 chandelier-mounted incandescent lighting in clear,large base tulip-shaped 30 watt bulbs,plus window light coming in from the right through mostly-closed white venetian blinds, plus the light from two computer monitors. Hand-held with the 105 DC lens. You can easily see the incandescent light on the left side of his hair,and the daylight on the right hand side of the frame.