by AlbertTRAL » Tue Sep 02, 2014 2:28 pm
I have not tested this situation but it seems that you are saving raw without saving the jpeg.
Then, the unit can only use the low resolution embedded jpeg inside the raw file (all raw files have one) in order to display the image because it does not find the matching hi-res external jpeg (this is why you see it pixelated and blurry, and much more if you zoom in). Due to the fact it does not find the external associated jpeg, it displays the message because there is no matching jpeg. As I say, only supposition, I have not really checked this because I always shoot raw+jpeg.
The option of not saving jpeg and only the raw file, if I do not remember wrong, appeared with the M module or in a later firmware review, this is maybe why the M module does not display the message.