The 220EX is a small EOS system flash with the E-TTL capabilities supported by all of the current Canon SLR cameras, both digital & film based.
| Type | Shoe Mount |
| Guide No. | 72' (22 m) |
| Angle of Coverage | 75° (28mm lens in 35mm format) |
| Auto Distance Range | 2.3-51.5' (0.7 to 15.7 m) |
| Auto f/Stops | None (full TTL at all apertures) |
| Vari-Power | None |
| TTL Dedication | Yes (E-TTL on newer Canon cameras) |
| Bounce Head | No |
| Swivel Head | No |
| Zoom Head | No |
| Off Camera Terminal | No |
| Recycle Time | 4.5 Seconds (based on fresh batteries & full power) |
| Power Source | Four 1.5-volt "AA" alkaline batteries |
| Dimensions | 2.6 x 3.6 x 2.4 (66 x 91 x 61mm) WxHxD |
| Weight | 0.35 lb (159 g) |