AdamJL wrote in post #10389763
Remember Digic does NOTHING to image quality (unless it's a jpeg of course.. then it's everything). It is simply a CPU, and does what every other CPU in the world does. It doesn't take the image.
That's half right, but half misleading, as well. The processor does do more processing to jpegs than to RAW images, but it processes ALL of them. People, including manufacturers and the media, aren't as careful about including explanations of what RAW really means, these days, so it tends to be forgotten that RAW does not mean "raw".
The sensor only provides capture data; it really is raw, but it's not RAW, and it can't be read by any consumer hardware or software. The processor turns that "raw data" into a "RAW data" image file, which can be read by photoshop, etc. It's far less processed than a jpeg, but it is processed. And a big part of that processing is turning the greyscale sensor data into something consumer software will interpret as colors and separating image data from noise.
That's why two cameras with the same sensor (don't forget, the sensors aren't generally made by the camera makers) produce different results even in "raw" format if they use different processors. It's also why cameras with the latest processors (1D Mk IV)are able to rip off 30 + frames at 10 fps without slowing down, but older cameras can't. It's also the difference between a usable 25,600 ISO versus 800 ISO.
The extra processing power makes a real world difference. If people don't care about the processors in their cameras, they should.