iPhone screen 4 is probably the best mobile display again, but this resolution does not exceed the retina of man, as Steve Jobs claims.

The math just does not add up, “said Raymond Soneira, president of Display Technologies Mate, who explained that the iPhone four suspected” Retinal Display “is a misleading marketing term.

“It’s pretty close to a perfect reproduction, but Steve has pushed a little too far,” said Soneira.

During his speech, Jobs said 4, the iPhone showed a pixel density of 326 pixels per inch. He said the resolution limits of the human retina, which Jobs said was 300 pixels per inch further for display on a foot beyond.

“This shows that there is a magic number right around 300 pixels per inch, if you owned something around 10 to 12 inches away from your eyes, is the limit of the human retina to respective pixels, Jobs said

Soneira, who has a doctorate in theoretical physics from Princeton and is studying the screens of 20 years, said it was bad for the resolution of the eye to be measured in terms of pixels, because the eye actually an angular resolution of 50 cycles per degree. Therefore, if we limit the resolution of the eye with pixels on a screen to compare, we need to convert an angular resolution of linear resolution. After conversions are made, a more accurate “Retinal Display”, a pixel resolution of 477 pixels per inch to 12 inches have Soneira calculated.

He noted that he was convinced Apple has the best phone on the market. As the LCD IPAD, the iPhone screen has 4 In-Plane Switching technology, where the crystal molecules are oriented so that their movement is parallel to the panel instead of perpendicular. For viewers, the result is a wide viewing angle – up to 180 degrees – with brilliant colors. Soneira said we can not realistically need something better than 326 ppi.

In comparison, glossy magazines are usually printed at 300 dots per inch.

Soneira said he wanted to emphasize that “Retinal Display” is a symptom of a wider market within the display industry puffery. In short, many manufacturers exaggerate the claims of their display requirements – any resolution, viewing angle and contrast of light – and they do it because everyone else.

“The smoke and mirrors marketing is now under control,” said Soneira. “Everything that is said is precisely what nonsense superamplified imaginary and the only way to attract attention now is more foreign judgments.”

For example, Soneira discarded televisions from Sharp that Quattrone claimed four primary colors (as opposed to the traditional display three) that it makes no sense. He explained in a previous paper reviews Maximum PC all television content and video is produced and the color balance in the traditional RGB color scheme. Sharp Quattrone fourth primary color is yellow, and there is nothing for her to do for yellow is displayed with mixtures of primary red and green, “he said.

“[Market puffery] companies with good products like Apple to get hurt because they have not really put the specs for everyone is,” said Soneira. “If you and I have the largest screen of the world and we launched it and put real scientific data, we would go bankrupt because our numbers look like the display is made worse.”

I will review how different between new Apple iPhone 4 and Apple iPhone 3gs

* Power and battery
Steve Jobs claims a 40 percent improvement over the iPhone 4 on 3GS, citing seven hours to talk about 3G iPhone 4 – up from 5 hours to 3GS. Waiting time is now quoted 300 hours, but interesting were the same for 3GS!

You get one hour more browsing statistics (6 5) and 10 hours of playback most (40 of 30) – although the video remains unchanged at 10 hours.

* Size and weight
As we heard that the iPhone 4 is 24 percent thinner than its predecessor at 9.3 mm instead of 12.3 mm. It is also ever so slightly larger than 3.5 mm. Weight, we also know that it is slightly heavier at 137g rather than 135g.

* Wireless and Data
With regard to Wi-Fi, iPhone 4 adds 802.11n to the mix along with 802.11b / g and Bluetooth 2.1. The 7.2Mbps HSDPA, 3G and EDGE functions do not differ

* Location and Hardware
The accelerometer, aGPS, a compass and Wi-Fi specs position is unchanged from 3GS but there is new material elsewhere – three axis gyro that can add increased six degrees of precision motion applications and games.

* Storage
The iPhone 4 is available in capacities of 16 and 32GB, but unfortunately not 64GB. The 3GS iPhone has been weak self – from being available in 16 and 32GB, the models produced from now equipped with 8GB memory, instead of filling the shoes of the budget ended iPhone 3G – the end of a really disturbing headset.

*Demonstration
The iPhone 4-screen remains the same size as the 3GS by 3.5-inches. But it is quite different, with four times as many pixels in a so-called “imaging the retina. This name is because Apple says the screen has a pixel more than the human eye can distinguish reality.

The 3GS has a 480 x 320 pixel resolution at 163ppi, while the iPhone 4 ups are important, giving a 960 x 640-pixel resolution at 326ppi and a contrast ratio of 800:1. While the OLED screen is not for some other smart phones that Apple says it’s IPS screen technology is better – is already used to IPAD.

* External buttons and inputs
Inputs and outputs are largely unchanged, but there is also a microphone on the iPhone 4 for better call quality with noise reduction. The buttons are the same points, but the volume buttons are divided into top and bottom.

* Video recording
While 3GS supported video was VGA (30 fps). IPhone 4, as expected, poking his finger in the eye to the devices Flip HD, with its own HD (720p, 30 fps) recording.

* Colors
White 3GS is now set – all are now black, while the iPhone has four black and white variants. Guards also Apple Seas – colored surrounds. Six colors are available.

* Camera (s)
The iPhone 4 ups the game almost in photography section, but will disappoint in the best camera phones. Even 3GS positive brilliant, with 5 megapixels instead of 3 mega pixels and add an LED flash (which can also be used for video).

The spring focus is maintained. iPhone 4 also adds a front-facing camera for video calls FaceTime Wi-Fi and more.

Unfortunately, the lock button and rotate IPAD.

Apple unveiled the new iPhone, 4 months after a few wild unprecedented losses. Sure, looks exactly as expected (Steve compares with an old camera Leica), with a glass front and back, but what’s inside that counts, children. The stainless steel band that goes around the phone system is the antenna, while also providing the main structure of the phone, even if it is plugged in / UMTS radio, GSM, the same old we all know and love – there is no reason why called the iPhone 4G. There is also, of course, in front of the camera that we all expect, back camera with flash LED, and a new high resolution screen, which doubles the pixels in each direction (960 x 640) for a 4X increase in total number of pixels – Apple says “Retina Display. It is rated at 326ppi, in which Apple claims is the limit of resolution of the human eye. Look at the example of the new screen on the iPhone 3G after the break. As if it is IPS screen, which offers a contrast 800:1. Of course, it’s still the same old 3.5-inch size. Beneath the bonnet of the A4 is a processor that runs IPAD. Despite the new engine (and 25% thinner chassis), Apple managed to make a slightly larger battery, and the new phone is rated at seven hours of 3G talk six hours of 3G browsing, viewing 10 hours WiFi, 10 hours of video and 40 hours of music. Oh, and WiFi; is now 802.11n. The camera has been bumped up 5 megapixels, a 5x digital zoom and “butt-lit sensor, which can now record HD video at 720p / 30fps.

In front of the software application will automatically get a high-resolution text and buttons are part of the IOS 4 (OS, formerly known as the iPhone OS 4), and “some” Developers can set app compatible with the new screen resolution . Developers also have access to new gyroscope, giving devs “six axis motion control, a gyroscope, accelerometer and compass, the new” Core Motion API to solve everything. Users are not left behind, but: can mess around with this new HD video using the all-new iMovie app, where you pay $ 4.99 for it. If anyone feels particularly playful, IOS 4 even allows you to change your default search provider Bing. Last but certainly not least, the new front of the camera has the ability to video chat with the new «FaceTime” feature. It is a WiFi-only (so far) video call feature, which works with 4-4 iPhone “not setup» involved, and can tip the camera back, if your grandparents get tired of your face.

The phone will be available in white or black, retails at $ 199 for the 16GB model and $ 299 for a 32 gigabyte go on sale June 24th, AT & T will give some extra time to upgrade grace – just six months earlier. 3GS will fall to $ 99, and 3G will disappear completely. Pre-orders start this week, with five countries in the market (USA, France, Germany, Great Britain, Japan), 18 more than in July. Apple will market the first party case for $ 29, and a dock for the same price. PR after the break, a promo video is available here, and we got hands-on here.