Originally posted by victormeldrew No, this is not normal behaviour, however some more detail and an example image might help identify the probem:
What little 'extras' did you disable?
What lenses are you using that have issues focusing? Are you sure you are not within the minimum focus distance?
What issues do you have with saturation and detail? Can you post an example?
Disabled - High light Correction, Shadow Correction, High ISO, Slow Shutter, Distortion Correction, Peripheral Correction, AA Filter
Lens - Problems occur with my Pentax (DAL 18-55, HD DA 50, SMC 50-200) Haven't tried the Sigma 100-300 yet on this camera. Problem is not limited to one lens, and does not always occur. Primarily happens anytime you start to get anywhere close to minimum focus distance. Also, have tried in live view, finding the same thing focus not always sharp (10x) even if you back off. Turn the camera off, come back later and focus sharp as a tack???
Raw images loaded into LR and PS tend to be over saturated, unless they are first developed in Utility 5, and then saved as a TIFF, otherwise when you drop the saturation down, some of the fine detail disappears. I'll try to do some screen captures later today. There was a known issue with PS and Pixel Shift as of April of this year, and I suspect there are also issues with how Adobe handles the Pentax file. Again never had these problems with the K30. LR and PS default to apply develop settings Pentax K3 II.
Meter issue can occur at anytime - I've had the camera on a tripod and focused. Press the shutter halfway, and the meter might register 2 stops over, release and press again, meter might register 2 under, press and hold and the meter might fluctuate from under to over to under. Then it might not do it again for days. Tried spot , center weighted and matrix. Tends to do it more on spot, but I've had the fluctuations on center weighted occasionally also.