Originally Posted by ftpaddict
This is the first time I've noticed these patterns.
Is this normal? Or just funky?
Its normal for digital cameras but I'm afraid your K100D is (much) worse than mine, honestly.
In fact, some models are less visible for this artifact than the others but even for the same model, some are better and some are worse. It is just a matter of design difference, individual hardware difference (for the same design) and calibration differences.