The LCD screen on the iPhone 3GS is far from perfect, but it's also significantly better than the much-touted AM-OLED display on the Google Nexus One, a scientific comparison of the two displays has found.
Dr. Raymond Soneira, president of DisplayMate Technologies, has published the first in a three-part series comparing the much-touted AMOLED display on the Google Nexus One with last year's iPhone 3GS. Parts two and three of the in-depth look are due to be published in the days to come at both displaymate.com and displayblog.com. He also spoke with AppleInsider about his time with the Nexus one and its comparison to the iPhone 3GS.
Soneira's discovery that the Nexus One screen is inferior to the iPhone is interesting, because many who spent time with both handsets said they found the Nexus One OLED display to be superior. But Soneira said eyeballing the screens isn't enough.
For his tests, he had the Nexus One, iPhone 3GS and a professional broadcast studio monitor all next to one another. The same image would be displayed on all three devices, and the two handsets were compared to the monitor.
The result: While the Nexus One might have a bright, eye-catching display, it also has lots of noise and artifacts, and it just isn't accurate. He said most users are probably wowed by the Nexus One display for the same reason people buy TVs at electronics stores with the brightest and most exaggerated picture -- it looks great at the store, but at home it just isn't right.
"The Nexus One really exaggerates the colors, and when you first look at it, it looks great," Soneira told AppleInsider. "But if you know what a picture is supposed to look like, then it doesn't look so good, because there's just too much color."
Most high-quality displays, including the iPhone, have at least 18-bit color, and emulate 24-bit color with dithering. But in his tests, Soneira found that the Nexus One screen uses only 16-bit color, which allows 32 possible intensity levels for red and blue, and 64 for green.
"This is common on cheap low-end devices, but it is unacceptable for an expensive high-performance 'Super Phone' that Google claims to to be," he wrote. "All screen colors are derived from intensity mixtures of the RGP primaries -- with so few levels to work with the colors are coarse and inaccurate, which produces quite noticeable false contouring in many images and photos."
Soneira also found that the Nexus One display is good at showing text, icons and menu graphics. But images and resolution scaling, he said, fell far short. He demonstrated this with a photo from NASA shown on both the iPhone and Nexus One.