I needed as a lamp to Strobist in low light to meet the Focus to make it easier to be objective, it works perfectly with this lamp. Decisive for the purchase was the adjustable over a Drehpotie light intensity, this is much faster and more accurately than possible the getippe on plus / minus buttons for many other lamps.
The light, however, is very hard, despite pre-plugged diffuser and is also very issued directed, for my needs but not a disadvantage. The P / L ratio is great because I was able to try other much more expensive devices which did not justify the rough Surcharge.