OK, first serious problem I encountered. I was out at the park taking pictures of my son playing with a propeller plane toy.
Setup:
K-7
DA 12-24mm F4
Shooting af F8 @ ISO400 in RAW/DNG
Of the 20 or so frames, 3 were like these:
These frames look fine on the camera LCD (and I can even zoom in to the pic and see some details), but on the computer, no go. Completely corrupt in Adobe Bridge, Apple's Finder, Preview, etc. I tried doing RAW developing within K-7, but once I switch over to RAW developing page, the image shows as being corrupt.
I wonder if this is somehow related to the sensor heating up in Live View/movie mode issue? These were taken just a minute or two after I took a series of video clips.
Serious letdown. Hopefully a firmware update will be able to fix this. I'm really bummed because I won't have time to exchange this unit before I go on my trip to Shanghai for the total solar eclipse on the 22nd. I hope this problem doesn't crop up, because I'm planning to take series of 5-shot bracket shots during the entire time of totality....