Put my 580EXII Canon Speedlite onto the hotshoe of my K-5, the Pathetic TTL issue of the Pentax and K-5 has been resolved immediately and forever!The trick is to set the Canon flash to External Auto mode (Custom Function No. 5 Selection 3) and the flash will remember every setting including this and the Av and ISO as well as the manual zoom angle for the flash coverage, even after it is powered
