@MGD;
It has to be compressed...do the math your self.
If it wasn't, a 6MP sensor would produce around 27MB of data.
To simplify the calcs in my link;
6,000,000 X 3 (channels) X 12 bits per channel = 216 million bits
Now remember, 1 byte = 8 bits...so 216M/8 = 27 million bytes.....although not exactly, but for sake of argument....27MB.

So you can see there has to be compression applied....
Whether that compression is truly "lossless"....well, that is something that only the camera manufacturer will be able to say...and most ain't sayin'....

Back to my pie....

In youth, we learn....with age, we understand.