Excerpt: The Sigma EG610 DG ST for Nikon has the quality and construction of a flash 3 times its price. I had a Vivitar DF-286 bounce flash and the casing was made of cheap thin-sounding plastic. But the Sigma is rock solid, and has a feeling of rubber-like coated casing. The Vivitar had LED lights that could be pushed in, but the Sigma's LED indicators are all recessed and encased inside.
Pros: Consistent Output, Durable, Easy To Use, Fast Recycling
Excerpt: I wanted a powerful, bounce-able flash for my DP1M. At the salesman's suggestion, I tried this as the only alternative that might - and he emphsized might- work. It didn't. Sometimes it just plain wouldn't fire. Couldn't figure out why. And in TTL mode I just wasn't getting good or consistent results. Otherwise seemed like a fine, well made unit. B&H's return policy saved the day.