Planned to buy an external flash for my K-5 as well as the DA15 and DA17-70 lenses but yet have been hesitating about their performance and accuracy. But now since the 5D3 really comes, I have decided to withhold all my Pentax purchasing plans as fund is always inadequate! :-( In fact, I would rather buy the new Canon 600EX flash which is cheaper than a Pentax 540 flash locally (assuming that it
