The "intelligent flash" on my otherwise excellent Fuji HS20 camera has always been troublesome; the output is has very poor control for fill in flash; it cannot be set low enough. I need power ratio control and the only TTL device available for the HS20 with this option seemed to be the Fujifilm EF-42. Research on the net showed Fotosense offering this item at a good price, and next day delivery for a small extra charge. Fotosense delivered as promised; good price; quick delivery; no hidden charges. The EF-42 does everything I hoped it would. In all, excellent customer service!