Since this thread is full of new buyers, thought this might be helpful
If you've run a search on the forums, you've seen K-5 + Metz 50 over exposure problems, esp. with bounce.....here's what worked for me so far:
Well, my Metz 50 arrived and, lo and behold, I was having the reported over-exposure problems with bounce! I downloaded the latest
K-5 firmware v1.11 (I had v1.03) and the latest
Metz 50 firmware v2.0, and LIKE MAGIC my exposures look really good with FEV dialed down just a touch. I'll keep playing with it, but the results look very good - especially compared to yesterday!