Comments about Vivitar Vivitar DF183 Digital TTL Shoe Mount Power Zoom /Bounce Auto-Focus Flash for Pentaxl Digital SLR Cameras, Guide Number 45m (147'):

The built in flash on my camera quit, and I didn't want to spend a lot to fix it, so, the easy solution was a cheap external flash. This one fit that need, and easily replaced the capability of the built in. It works OK, but I did find the range somewhat limited - more expensive flashes will shoot farther. But at [$] I can forgive it for that. The claim of 100 shots per set of batteries seems about right, but it will varry with the distance of your shots. For shots from 3 to 20 feet or so it seems consistent. Overall, a reasonable flash if your looking to buy a decent if basic, low cost flash.