With the release of Apple's new iPhone 5 on Sept. 21, the public can now test for themselves just how well the smartphone measures up against its main competition, Samsung's Galaxy S III. The result? Toss the iPhone 5 a crown. The iPhone 5 has the best display available on a smartphone, and better battery life, according to a new study conducted by DisplayMate.

The iPhone 5 reportedly has the highest Contrast Rating for High Ambient Light for any mobile device Displaymate has tested, apparently 57 percent higher than the iPhone 4. The company notes that the brightness of the Galaxy s III's screen is roughly half that of the iPhone 5 "due to power limits from the lower power efficiency of OLEDs and concerns regarding premature OLED aging."

The battery power's running time on the Galaxy S III is less than the iPhone 5 for similar reasons, "due to the lower power efficiency of OLEDs, even given that the Galaxy S III has a much larger battery capacity and much lower Brightness," says the study.

"It's still a Retina Display with 326 Pixels Per Inch PPI and with a Resolution of 1136x640 pixels," says DisplayMate of the iPhone 5's screen. "Based on our extensive Lab measurements the iPhone 5 has a true state-of-the-art display - it's not perfect and there is plenty of room for improvements (and competitors) but it's the best Smartphone display we have tested to date."

The iPhone 5 is also the brightest smartphone that DisplayMate says it has tested, and evidently has one of the lowest screen Reflectance values the site has ever measured. The smartphone's Color Gamut and Factory Calibration are second only to the new iPad, according to the study.

The Galaxy S III's Color Gamut is reportedly much larger than the Standard Color Gamut, leading to distorted and exaggerated colors, and is very lopsided. Apparently, green is far more saturated than red or blue, which adds a green color caste to many images on the phone.

"Samsung has not bothered to correct or calibrate their display colors to bring them into closer agreement with the Standard sRGB / Rec.709 Color Gamut, so many images appear over saturated and gaudy," says DisplayMate.

"The Galaxy S III has a PenTile OLED display, which has only half of the number of Red and Blue sub-pixels as in standard RGB displays, like those on the iPhones. The eye's resolution for color image detail is lower, so this works well for photographic and video image content, but NOT for computer generated colored text and fine graphics because it produces visible pixelation, moiré, and other very visible artifacts, so a PenTile display is not as sharp as its pixel Resolution and PPI would indicate."

DisplayMate's study skirts handing the iPhone 5 a definitive overall victory, though -- the site adds that the White Point is still "somewhat too blue." But, apparently that's a common trait of most smartphones.

With more than 44 percent of U.S. adults now owning smartphones, up from 35 percent in May 2011, according to a survey conducted by Pew Research Center, the smartphone market is only continuing to swell. The market might be getting bigger every day with more and more people buying smartphones, but it's also getting more crowded, and statistics like that make technological footholds like these increasingly more important.

Of course, you also have to apply a degree of skepticism to all of this. Obviously, DisplayMate isn't the only company out there comparing these phones. And, in fact, a study conducted by IHS found just the opposite. Analysts concluded that the Galaxy S III's display is just 1.1 millimeters thick and offers the full color gamut of the NTSC standard in comparison to the iPhone 5's 1.5 millimeters thick display, which offers 72 percent of the standard color gamut, according to IHS.

"Such improvements on the iPhone 5 are consistent with Apple's philosophy of selecting features designed to yield profitable products that deliver a superior customer experience, rather than of providing technology for technology's sake," said Vinita Jakhanwal, an analyst at IHS.