Originally posted by RJSPBR aperature priority and multi-segment metering.
First photo has no flash and looks great - iso 100 time 1/1250.
For the second photo I popped up the flash. This time the camera chose iso 800 and time 1/180
Sorry haven't had time to duplicate these conditions just yet; but I promise that I'll look into it further. -And I'll also try my best to get it both answered and solved.
But here's what I've got so far based upon the facts as presented... I did indeed notice the first good picture setting which does in fact look good. But also the fact that you prefered aperature priority' which also does not appear out of the ordinary. I also might have tried the pic in manual yet also making the clear distinction NOT to go above the flash max shutter sync speed - 1/180 as nioted, but...
In doing so the aperature would have needed to be closed more to compensate for the new shutter speed; off the top of my head at least three to four stops - perhaps more based upon flash output - even though technically it is a built in color correcting type of fill flash. I'll have more of the exact numbers later. I'll also thoroughly review the exif data; the problem may very well be in the lens - not that the lens does not work well generally, but there may be an issue with the lens and the K-01 - it's possible bur rare. Which not to make a bad criticism, but that is why i prefer to stick with the Pentax brand whenever possible.
So it may be possible to get a good results based upon a number of factors. First by possibly switching to manual and experimenting. It may take more than a bit of experiementing. Which is why I like to run my camera through as much of a battery of test pics (many hundreds of them) before looking to go into the real world with it, Also the problem may still be in the menu settings. Third option and also the most probable one - the lens being properly interactive with the camera body.
I've seen Pentax bend over backwards for the Pentax camera body in relation to a Pentax lens, but for the third part ones; to be honest -I'm not sure if they could or would do much about it.
Have patience with it; again I'll be checking on more of an answer soon. There most likely is a solution