This week I wanted to write and make everyone aware of a new third party builder for photography accessories, YONGNUO. Some of you may have heard of them before and some of you may not, but YONGNUO has been around for a few years now and they started out making knock-offs of Canon and Nikon’s Speedlites. This first set of images is the Canon 580EX II Speedlite vs YONGNUO’s YN560 IV. If you are familiar with them, their first generation of Speedlites had issues with getting hot while using them or failing after short periods of time, but lately their quality …