The Quantaray PZ-1 DSZ Series TTL Power Zoom Flash is made for us by Sunpak, so you can be confident of the quality. To begin with it features a power zoom that will match lenses raging from 28 - 80mm and guide numbers from 80 - 138(ISO 100 / ft.) mean lots of power to reach out with (with 400 ISO film you can use f/4 and still go out as far as 66 ft.!). The informative, illuminated LCD control panel can be set to read out distances in either feet or meters, and meter control is TTL (controlled by the camera) for exceptionally accurate exposures. YouÆll find a bounce head for professional results, a choice of front or rear curtain synchronization, a choice of several power sources and an Auto-off to save on battery power. Available for use with Nikon, Canon, and Minolta autofocus cameras.