Originally posted by rawr D3x is a pretty special camera. But for USD$9200 it only gives you +1 EV over the K-x's 12.5 DR.
So once again, DR isn't an arena where FF has inherent advantages over smaller sensors.
D3x can be found for $6,729.95 and thats not the price for the sensor its a big and massiv camera , 5.0 fps at24mpx ...etc.etc
A pentax camera with a similar sensor will not cost that much.
DR:
rawr:
What FF boxes - eg like the D700 or 5D2 - do have, however, is a superior ability to hold onto a usable range of DR as you move up the ISO scale. So while they may not have a higher DR at base ISO, they can hold onto their DR better.
As you go past 800 ISO (811 to be exact, according to DXO), the K-x's ability to hold onto a decent level of DR (9 EV is what DXO uses to define decent DR) starts to decline. However the FF 5D2 it can still hold onto 9EV of DR up until 1815 ISO, and then the decline sets in. The D700 can hold onto 9EV up until about 2300 ISO, then it starts to lose DR.
Thats an advantage