List of the Top 10 Best Selling Flash Units as compiled by Amazon. The Canon Speedlite and Nikon Speedlight lines dominate the flash  photography marketplace, combining to take the top 6 spots in this top 10 list. Based upon the market dominance of Canon and Nikon in the digital camera category, it comes as no surprise their dedicated flash units are top in sales.

Leading the best seller list is the Nikon SB-600 Speedlight Flash. The SB-600 is a feature rich, versatile flash unit capable of working with every Nikon made in the past 40 years. Some keys specs that make this a top choice among photojournalists include..rated GN 98, feet at ISO 100 at the 35mm setting, variable power controls, light and compact, +3 to -3 stops flash exposure compensation on the flash, and much more.