Jeffery
I bought 3 of these and have used them for a few quickie location portrait jobs. They work well indoors. THE INFRARED TRIGGER DOES NOT WORK WELL OUTSIDE!! Forget the IR and go with Pocket Wizards. Firing these units with a pop-up camera flash worked very well indoors with my Nikon D-610. I was able to get the units to fire consistently with my pop-up on 1/16th power. Thats a good thing if no one else is firing a flash. For weddings, you must use a Pocket Wizard or other radio trigger. These are totally manual, so expect a learning curve if you didnt serve time in the old school of dumb speedlights. As for me, I like the manual speedlights because they are cheap and they always put out the brightness you set them on. TTL units can be easily fooled. Battery life is low, because these units may not have a recycle circuit. I didnt get any more flashes on various powers than I did on full power. So every flash, no matter the setting, uses a full power load. Excess is dumped. Too bad. Batteries get hot and fail quickly. Not great for the wedding and event shooters. But for 40 or 50 flashes on a quartet of AA batteries, you get big output. Summary: Good value