Canon Canolite D is an electronic flash unit compatible with Canonet, EX AUTO, and Canodate E cameras. It offers automatic flash control and eliminates the need for guide numbers. The Canolite D features a color temperature correcting diffuser for accurate color balance and a wide coverage angle for illuminating subjects. It also provides fast recycling times and a long battery life. Additionally, the unit has a built-in pilot lamp to indicate readiness and a switch to turn it off when not in use.