Bought the small mainly because the master ability to use these on a EOS 5D Mark III, and Eos 50 D. Power very well, so that a control 580 ex ll on, fill as easier to use his job as Master tidy. Due to the very small size, you can always take this, there is also a small very-quality cloth bag included. For all Canons without a flash and / or Master ability bedekenlos recommended.
