I would like to see the S4 scores for the metrics dxo normally uses for camera sensors: Color Depth, Dynamic Range, Low-Light ISO. I know they might be pitiful, maybe they don't want to make the camera phones look bad since they get their money from advertising.
Alternatively I would like to see normal dpreview camera reviews list those 7 metrics : exposure/contrast, color, autofocus, texture, noise, photo artifacts, flash. (at least the ones that are applicable) Some numbers to back up dpreview's pulled-out-of-the-air final percentage scores wouldn't hurt.
Why are there two separate sets of criteria? I know camera phones, compacts, and interchangable lens camera could be considered completely different categories and might use different scales for rating, but I would think there could at least be a common set of metrics.
it seems like the app should always be free - they can charge whatever they want for the hardware.
It could be sample variation, but I also thought the 650D looks worse than the 600D at both low and high ISOs. Not by much, but noticeable. I wonder if the pixels stolen to do the hybrid autofocus are reducing quality?