key specifications for the Canon Macro Ring Lite ML-3:
- Designed For: Close-up photography with the EF 50mm, 65mm, and 100mm Macro lenses.
- Flash Mode: A-TTL (automatic through-the-lens flash metering).
- Modelling Lights: Available.
- Compatibility: Works with all EOS models
- Power Source: Requires 4 AA batteries.
- Weight: Approximately 3.29 pounds (1.49 kg).