Originally posted by piskota thanks. i heard also good opinions about the vivitar 285hv. i am interested if the vivitar matches in power the metz 48 or is it more powerful. what about the
sigma ef 430st as fill flash?
Read this article on the newer version of the Vivitar 285HV:
Strobist: The Return of a Classic?. It's important to note that like Polaroid, the Vivitar company is long gone, and the name is owned by another, unrelated company that just uses the brand to sell stuff. In this case, part of the brand is owned by Sakar (aka Digital Concepts), and they use it to sell a line of flashes made by Icorp in Hong Kong. The 285HV, though, is made by Cactus. See this thread for more background:
https://www.pentaxforums.com/forums/pentax-flashes-lighting-technique/61618-c...5hv-flash.html
To answer the power question directly, though, from the
specs @ B&H, it looks like they have roughly the same power, although the Metz has a better reflector (which will make a difference when used at 70mm (real) focal length or higher). Also given the shadiness, of the Vivitar name use, I wouldn't be surprised if the power is a bit overstated.