Which Canon Speedlite Suits Studio and Wedding Photography Best? The Canon Speedlite EL-5 (Ver.2) is a professional flashgun built for photographers who need dependable, high-output lighting across portrait, wedding and studio work. With a GN60 guide number, radio wireless control for up to 15 units, and a weather-resistant build, it is designed to perform consistently in demanding shooting conditions. For photographers upgrading from entry-level flashguns, the jump in creative control and reliability is immediately noticeable. Key features GN60 (ISO100, 200mm) guide number for powerful, consistent output Radio wireless flash control for up to 15 receivers at 50m range Manual power control down to 1/1024th in 1/3-stop steps Modelling lamp with 5 brightness levels for previewing light before the shot Dust and water-resistant construction with Multi-Function shoe mounting Rechargeable LP-EL lithium-ion battery with 5-level or percentage indicator Canon Speed