@PPG;

Don't really know where to start with my response....but here goes;

1. If you plan on printing your images at 8 feet by 8 feet...AND absolutely require them to be at 300dpi....There is NO current digital camera that has a sensor to do this for you.  At 300 dpi and 96 X 96 inches in size, the sensor would need to be 28800 pixels by 28800 pixels in size....that is about an 829 megapixel camera!  I think what you will find is that images of that size are usually printed at 100, 72 or even less dpi....so, even at 72 dpi it would require a sensor of about 47 MP.  With up-resing software you might be able to get the 22MP Hasselblad or 16MP Canon to get you there....unfortunately at a cost in the tens of thousands of $....

2. If you decided on a 10MP camera with a sensor size of 3872 X 2592 pixels...without up-resing software, a 72dpi print will be 54 inches by 36 inches....at 300 dpi it would be 12.9 inches by 8.64 inches.....nowhere near your requirements!

So before we can go any further with your question, I think you need to re-visit your printing requirements.

@sans2012...please read the earlier thread on resolution myths....there is NOT a remarkable difference between 6MP and 10MP!

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