The iPhone JPEGs look worse in my experience than the TIFFs. Granted it is subtle. The corruption in JPEGs takes place at the level of the 8x8 pixel blocks. You say there are DNGs from iPhone apps? ...
Terrible move on Panasonic's part. they should have kept the phone but made the sensor larger. they could have even scaled back the processor if they needed to reduce costs. or they could have...