Canon 0585C006 Speedlite 430EX III-RT Flash Series: 430EX IIIRT Specifications: Number of Flashes: Approx. 180-1200 flashes (with size-AA/LR6 alkaline batteries) Recycling Time: Normal flash: Approx. 0.1-3.5 sec. Quick flash: Approx. 0.1-2.5 sec. Flash Range: Effective flash range with EF 50mm f/1.4 lens at ISO 100 Normal Flash: Approx. 2.3-77.4 ft./0.7-23.6m Quick Flash (at Guide No. 62.7 ft./19.1m): Approx. 2.3-44.6 ft./0.7-13.6m High-speed Sync (at 1/250 sec. shutter speed): Approx. 2.3-42.0 ft./0.7-12.8m Custom Functions: 10 Functions Personal Functions: 8 Functions Compatibility: Type-A EOS cameras (E-TTL II/E-TTL autoflash) Flash Modes: E-TTL II/E-TTL autoflash Guide Number: Supports a shooting angle of view with a lens focal length of 24-105mm. The maximum Guide No. is approximately 141.1 ft./43m at ISO 100 and 105mm flash coverage....