Sony would still like you to get excited about its upcoming Exmor RS stacked CMOS image sensors -- just not too excited. Both the 8-megapixel IMX134 and 13-megapixel IMX135 are scaling back from their original RGBW (red, green, blue, white) coding to an ordinary RGB over concerns that they aren't meeting Sony's "image quality standards" as originally designed. Consequently, either sensor will be less sensitive to light and diminish some of that high dynamic range magic. The company also doesn't want to get our hopes up for a quick arrival on shelves and clarifies that there's a phased launch starting in January. Mobile shutterbugs may be crestfallen knowing that Sony won't have the best possible camera sensor in future Xperia phones, but the honesty at least guarantees that the company gets a timely return on its $994 million investment.