Originally posted by stevebrot By any chance were you using an "A" series rather than an auto-focus lens?
It was a recent model AF lens, 24-70 f2.8.
---------- Post added 23-09-19 at 05:02 ----------
Originally posted by shardulm usually the contacts. I have my camera contacts get a layer of something at times... (something like it was kept in a humid situation for some time, although not). I have to deliberately clean each contact on the hot shoe (on the camera) to make it clean/shiny. This happens more on my K-01 often and sometimes on my K-5ii.
Flash wont be at the end of it with that behavior.. if the capacitor inside (which is the component that usually fails if not the bulb) is dying then it will just stop working or will recycle more often than it used to.
Thanks for this. Hopefully a good clean and check will solve it.