How to distinguish ipad mini 1 from 2
Both models have good optics, allowing you to take high-quality photos and shoot decent video. They have two cameras: front and main. The front 1.2-megapixel FaceTime HD camera has face recognition and lets you make FaceTime video calls over Wi-Fi or 4G. In addition, it supports 720p HD video recording.
A device called iSight is used as the main camera. It is built on a 5-megapixel CMOS sensor from Omnivision, which was used in the iPhone 4, but additionally it has a new 5-element optics. The camera supports the following functions: autofocus, focus on tap on the screen and face recognition. It has a built-in hybrid IR cut filter and backlighting. In addition, it allows you to shoot videos with HD quality: 1080p / 30 fps with image stabilization.
The quality of pictures and videos is quite high, which meets the new trends in using the tablet as a photo and video camera. This year it was quite common to see young people filming videos on Apple tablets.
An additional option when shooting video footage is 3x zoom, which was first used on tablets of this class and will be a real gift for iPad mini 2 owners.
The design of devices can tell a lot about their functionality, so let’s start our review with it. The new iPad mini 2 is somewhat “plumper” compared to the older model. its thickness is 7.5 mm against the previous 7.2 mm. The remaining dimensions remained unchanged. 200×134.7×7.5 mm (for comparison, the iPad mini has 200×134.7×7.2).
The same can be said about the weight of the device. compared to the previous model, it “gained” by 29 g, that is, 341 g (version with a SIM card and Wi-Fi) against 306 g, respectively. Despite almost 10% weight gain, it can be considered invisible.
The front panel of all models is covered with glass with an oleophobic coating, which prevents fingerprints from spoiling the appearance. Under the screen, as always, there is the Home key, and above it the front camera lens.
Despite the expected “golden” iPad mini 2, the manufacturer does not provide such a body color. The new tablet will be available in two versions. white with a silver back and black (Space Gray back), while the predecessor was completely white and black. The bezel of the matrix remains quite wide, so it is comfortable to hold the tablet in your hands without touching the touch screen.
Both versions have a volume rocker and a Mute slider on the right side. On the left (for versions with a mobile module) there are slots for Nano-SIM cards (iPad mini and iPad mini 2). At the top there is a standard 3.5 mm audio jack, a power button and a plastic plug for cellular antennas, to the left of which the main camera lens is mounted.
At the bottom of the tablets, there is a miniature 8-pin reversible Lightning connector that can be inserted either side. IPad mini and iPad mini have speakers built into either side of the interface for extraordinary sound quality.
- Wi-Fi (802.11a / b / g / n); dual channel (2.4GHz and 5GHz) and MIMO
- Bluetooth 4.0 technology
- GSM / EDGE
- CDMA EV-DO Rev. A and Rev. B
- UMTS / HSPA / HSPA / DC-HSDPA
- Data only
[nadavi razdel = ”30 ″ model =” Apple iPad mini retina 16Gb Wi-Fi ”]
The use of a Retina screen, double the resolution and the use of a 4G module required an increase in the power of the iPad mini 2 hardware, which significantly increased power consumption. But, as you know, Apple tablets have always been distinguished by long battery life, so the developers had a goal. to increase the battery capacity with minimal changes in weight and size characteristics.
[ga300] The iPad mini comes with a 16.3 Wh (4430 mAh) rechargeable battery, which is sufficient for continuous operation. In the new model, despite the introduction of special energy-saving functions, a more powerful battery was needed, which led to a slight increase in the thickness of the case and the weight of the device. by only 3 mm and 29 g, respectively.
Through the use of innovative technologies, Apple engineers have managed to maintain the same battery life. It is:
Listening to audio recordings and watching videos. up to 10 hours;
Active work on the Internet via Wi-Fi. up to 10 hours;
Surfing the Internet over a 4G cellular network. up to 9 hours.
- Wi-Fi (802.11a / b / g / n); dual channel (2.4GHz and 5GHz)
- Bluetooth 4.0 technology
- GSM / EDGE
- UMTS / HSPA / HSPA / DC-HSDPA
- Data only
Unlike the iPad mini, the new iOS 7 has been developed for models using the A7 processor to ensure that the new chips are compatible for maximum performance. At the same time, the operating system interface has become simpler and incredibly intuitive, so it does not require much getting used to.
So for a more comfortable perception, the Control Center panel has become horizontally oriented. Now, to see frequently used programs, you just need to lightly touch the panel on the screen.
Compared to the old Camera app, the shutter button has been moved from the bottom of the screen to the side panel. It is there that the thumb is located when shooting, so it became more convenient to use the program.
The new interface uses a translucent background and lifelike animations to make even simple apps like weather forecast fun. Eye-pleasing new button design, streamlined color palette and improved fonts that create a special harmony in the interface elements.
Packaging of the original Lightning cable
The printing must be of high quality, the drawing is clear and even, the box is protected from tampering with a silicone tear-off strip with an acid-orange badge.
When opening the box, the cut-off of the line must be smooth and even. For fakes, this line is made of plastic by the perforation method, and it comes off in jerks, piece by piece. Since the Chinese have not yet learned how to fake this part, it is at this point that we recommend paying more attention.
Directly inside the box, the cable should be wound on a pure white cardboard backing that holds the cable with glued tabs. Most often, this glue is strong enough, and it is almost impossible to open the cable without damaging the cardboard.
The original Apple Lightning to USB cable must have the words “Designed by Apple in California”, “Assembled in China”, “Assembed in Vietnam” or “Indústria Brasileira” at a distance of exactly 18 cm from the USB connector. There is a 12-digit serial number next to these labels.
Third Party Cables
Of course, if you are not satisfied with the original Apple cables, you can safely use Lightning cables from other manufacturers with the MFI (Made For iPhone) mark. As a rule, they are made of higher quality materials, and the MFI logo indicates that this accessory is certified by Apple and meets all standards. We recommend purchasing cables only from well-known manufacturers that are recommended and promoted by Apple itself, or that provide a lifetime warranty for their products. Our choice settled on the Native Union company, namely, we recommend the Native Union BELT Lightning to USB 1.2m cable.
At the moment, it is the best on the market both in terms of reliability and design.
How to tell an original Lightning cable from a fake
Recently, there have been more frequent cases of fires and overheating of smartphones, which were charged with cheap, “Chinese” accessories. We, in turn, regularly remind our customers how important it is to charge their devices with the original cable and power adapter.
But how to understand whether you are purchasing an original cable and how to distinguish a fake from a Chinese copy. In this article, we will look at the main points that you need to pay attention to when purchasing a Lightning cable and how not to be fooled.
The Lightning connector on an original Apple cable must meet the following requirements:
1.The dimensions of the connector are always the same (7.7 x 12 mm);
Connector surface gray / metal;
The connector is made in one piece, smooth, with rounded and smooth contacts.
How to tell an original Lightning cable from a fake
To determine the originality of the cable, you need to pay attention to the Lightning connector, laser engraving of the cable and the USB connector.
How to recognize and distinguish an original iPad from a Chinese copy
The more famous a company becomes and the more popular the product it produces, the more likely it is that this very product will become an object for various imitations and fakes. For example, Apple and its products are well-known and popular all over the world. Accordingly, Apple products. so desired by many users. are often the target of counterfeiting. And so that our readers are aware of what is original and what is fake, today we will tell and show by what characteristics it is possible to distinguish the original iPad, iPad 2 and iPad 3 (New iPad) from fakes.
There are a decent variety of fake iPads of various versions. Naturally, these are mainly Chinese clones that are built on the Android operating system. For example. the option shown above.
But let’s go through the different features of the iPad versions.
First of all, what you need to pay attention to if you want to buy yourself a brand new iPad is packaging. Each new iPad is sold in its original branded box, which is packed in plastic wrap. For example, this is how the original packaging of the first generation iPad looks like:
Below you can see a variant of the Chinese counterfeit of the first iPad (pay attention to the packaging):
The packaging of the second and third iPad (iPad2 and iPad3) looks virtually identical. Again. they must also be wrapped in polyethylene:
As you can see on the packaging of the third new iPad instead of the branded apple, iCloud is shown at the bottom of the box.
Another important point in determining the originality of Apple products is the presence of serial numbers on the back of the box, by which it is quite possible not only to determine whether the product is original or not, but also to try to determine for which country this iPad was imported? (You can read more about this in our article “How to Identify and Distinguish the Growth of an iPhone or iPad”) In most Chinese fakes, this moment is absent. By the way, you can see the insides of the original device in the instructions for disassembling iPad 3, iPad New.
In addition to the appearance and packaging, the distinctive features of a fake from the original iPad may be:
- using the Android OS or in general its own imitation of the OS
- mistakes in the words of the menu (the Chinese cannot live without it =))
- Chinese manual. speaks for itself
- rough imitation (and as different as imagination suffices) of the outer case
- size mismatch (mostly fakes are much smaller than the original iPad)
We hope that with this material we were able to fully show the answer to the question. “how can you recognize and distinguish the original iPad from fakes?” Buy and use only original products!
Packaging and equipment
The packaging of the iPad 4 is practically the same as the packaging of the tablet of the previous generation.
As for the package bundle, everything is predictable here too (the set of plugs for charging depends on the region in which the device was purchased, so you shouldn’t pay attention to this). The only difference is the Lightning cable instead of the traditional one. As you can see, not only the iPhone and iPad mini, but also the “adult” iPad got a new connector.
Review and testing Apple iPad 4
At the end of October, along with the iPad mini, Apple introduced a new generation of iPad. Amid the hype around the iPad mini, this unexpected announcement went almost unnoticed. Of course, this is also a consequence of the fact that the updated iPad, judging by what was said at the presentation, does not offer anything revolutionary. But. let’s not rush to conclusions and we will understand everything in detail.
Let’s start with the terminology. Apple hasn’t given the new iPad its original name. it’s just iPad (with Retina display). Unofficially, it was called the iPad 4, since it is the fourth generation of the iPad. However, as we remember, the previous generation also did not have a number in the name. At the presentation, it was called The New iPad, and although later information appeared that The New iPad is not a proper name, but simply “the new iPad”, the third generation of Apple tablets began to be called that way.
Now the company’s marketers have completely confused buyers and the press. Calling the “new” iPad of the previous generation is somehow strange, and most importantly. it is not clear how to call the iPad of the fourth generation. If not for the previous The New iPad, one could call new every next generation. But over the past months, the word “new” has stuck to the third generation iPad.
Why this leapfrog? Why was it impossible to leave the numbering, as is the case with the iPhone? Apparently, Apple marketers have decided to follow the same path as with laptops. As we know, MacBook Pro and MacBook Air do not have numbers either, and generations are designated by phrases like “Late 2011” or “Mid 2012”. Well, let’s see how this affects sales. For the sake of simplicity and to avoid confusion, in this article we will still call our new product iPad 4, and the previous model. iPad 3.
So let’s take a look at the specs of the iPad 4 versus the iPad 3 and major competitors.
|4th generation iPad||3rd generation iPad||ASUS Transformer Pad Infinity||Samsung Galaxy Note 10.1|
|9.7 ″, IPS, 2048 × 1536 (264 ppi)||9.7 ″, IPS, 2048 × 1536 (264 ppi)||10.1 ″, Super IPS, 1920 × 1200 (224 ppi)||10.1 ″, PLS, 1280 × 800 (149 ppi)|
|Apple A6X @ 1.4 GHz (2 cores of Apple’s own architecture based on ARMv7s)||Apple A5X @ 1 GHz (2 cores, ARM Cortex-A9)||NVIDIA Tegra 3 T33 @ 1.6 GHz (4 cores 1 auxiliary, ARM Cortex-A9) or Qualcomm MSM 8960 Snapdragon S4 Plus @ 1.5 GHz (2 Krait cores, ARMv7 ISA)||Samsung Exynos 4412 @ 1.4 GHz (4 cores, ARM Cortex-A9)|
|PowerVR SGX 554MP4 @ 300 MHz||PowerVR SGX 543MP4 @ 250 MHz||GeForce ULP @ 520 MHz or Adreno 225 @ 400 MHz||ARM Mali-400 MP4|
|from 16 to 64 GB||from 16 to 64 GB||from 16 to 64 GB 8 GB cloud storage||from 16 to 64 GB|
|Lightning dock connector, 3.5mm headphone jack||dock connector, 3.5 mm headphone jack||Micro-HDMI 1.4а, 2 docking connectors (one at the docking station), 3.5 mm headphone jack, USB 2.0 (at the docking station)||dock connector, 3.5 mm headphone jack|
|not||not||microSD (up to 64 GB), SD / SDHC (up to 64 GB, on docking station)||microSD (up to 64 GB)|
|1 GB||1 GB||1 GB||2 GB|
|rear (5 Mp; video shooting. 1920 × 1080), front (1.2 Mp photo, 720p video via FaceTime)||rear (5 Mp; video shooting. 1920 × 1080), front (0.3 Mp)||rear (8 Mp) and front (2 Mp)||rear (5 Mp; video shooting. 1280 × 720) and front (1.9 Mp)|
|Wi-Fi (optional. 3G, as well as 4G LTE without support for Russian networks)||Wi-Fi (optional. 3G, as well as 4G LTE without support for Russian networks)||Wi-Fi (optional. 3G and 4G)||Wi-Fi 3G|
|Apple iOS 6.0.1||Apple iOS 5.1 (update to version 6.0.1 available)||Google Android 4.0 (update to version 4.1.1 available)||Google Android 4.0|
|241.2 x 185.7 x 9.4||241.2 x 185.7 x 9.4||263 x 180.8 x 8.5||262 × 180 × 8.9|
|699||N / A (0)||406 (2)||452 (2)|
iPad Mini 1 vs iPad Mini 2 :Comparison
As for the characteristics, as we can see, the changes compared to the iPad 3 relate exclusively to the internal components: a new SoC, a new front camera But a comparison with competitors is hardly possible based on this table alone. At least there are no such characteristics on which the iPad 3 would be inferior to competitors, and the iPad 4 would surpass them, so it is difficult to draw any preliminary conclusions here. Let’s move on to face-to-face introduction and testing instead.
Here we come to the main difference between iPad 3 and iPad 4. This is performance. The previous model ran on the Apple A5X SoC, which contained two ARM Cortex-A9 CPU cores at 1 GHz, as well as a quad-core PowerVR SGX 543MP4 GPU at 250 MHz. In the new SoC, the frequency of processor cores increased to 1.4 GHz, while the frequency of the GPU. up to 300 MHz. The number of cores in both cases remained unchanged. However, if in the case of the Apple A5X, the Cortex-A9 CPU cores were used, now (starting with the Apple A6) Apple itself has created the CPU cores based on the ARMv7s architecture.
Let’s see how the SoC change affected the iPad 4’s performance as the rest of the specs (RAM, screen resolution) remained unchanged.
Let’s start with the synthetic Linpack benchmark, which reflects CPU performance. It will allow us to understand how the new architecture of the CPU cores proved to be effective.
Well, we see that the difference is gigantic. Obviously, this cannot be explained solely by the increased CPU frequency. Apparently the updated architecture is really highly efficient.
|Apple iPad fourth generation|
|Apple iPad 3rd generation|
|SunSpider 0.9.1 |
(less is better)
|867.0 ms||1794.6 ms|
So, the iPad 4 is more than twice as fast as the iPad 3. Note that this is pretty close to the iPhone 5, but even better. Thus, at the moment, iPad 4 is the absolute record holder among ARM devices in this test. For comparison, here are the results of the main Android competitors.
|Samsung Galaxy Note 10.1 (Samsung Exynos 4412)||ASUS Transformer Pad Infinity (NVIDIA Tegra 3 T33)||ASUS Padfone (Qualcomm Snapdragon S4 Plus)|
|SunSpider 0.9.1 |
(less is better)
|2292.0 ms||1926.0 ms||1568.7 ms|
In the GeekBench 2.3.6 multiplatform test, the iPad 4 also completely defeated its predecessor, but the competitors from the Android camp were generally no worse.
|Apple iPad fourth generation|
|ASUS Padfone (Qualcomm Snapdragon S4 Plus)||ASUS Transformer Pad Infinity (NVIDIA Tegra 3 T33)||Samsung Galaxy Note 10.1 (Samsung Exynos 4412)||Apple iPad 3rd generation|
|Geekbench 2 |
(more is better)
Perhaps the point is that Geekbench is sensitive to the number of CPU cores. And according to this parameter, both NVIDIA Tegra 3 and Samsung Exynos 4412 overtake Apple A6X. However, do not forget that this is a benchmark, but real applications, as a rule, do not use all four cores. Therefore, the victory of ASUS and Samsung tablets in this benchmark does not mean that it will be more comfortable to perform some operations on them.
Let’s say more: at the moment, there are not even such areas of application of tablets, in which a large computing power of the CPU is regularly required. Compilation, 3D modeling, rendering, archiving, professional graphics work and the like, on which we usually test processors for PCs, no one does on tablets. Yes, from time to time there is a need for computing power. for example, for indexing a new dictionary or a database of a cartographic program, but these are one-time needs and are almost always not critical to the speed of execution. At the same time, games for mobile devices are mainly written so as not to overstrain the processor, and when playing video, the GPU is much more important (provided that the video player can use hardware acceleration). Perhaps that is why Apple does not increase the number of CPU cores in its SoCs, like competitors, but makes Accent for GPU performance. iPad 4 is another proof of this.
To answer the question of how much the GPU performance has increased, we used GLBenchmark 2.5.1, which simulates scenes from 3D games (Egypt HD and Egypt Classic). In the first table, you will see the results of the iPad 3 and iPad 4, and in the second, the results of the competitors. Recall that since the screen resolution of Android tablets is different from that of the iPad, it makes sense to look first of all at the graphs with the word Offscreen. they show the performance when launching a game scene at a fixed resolution of 720p. As for the rest of the graphs, they show the performance at the maximum display resolution. and therefore, both iPads with a resolution of 2048×1536 are in worse conditions than Android devices with 1280×800.
|4th generation iPad||3rd generation iPad|
|41 fps||22 fps|
|48 fps||27 fps|
|34 fps||21 fps|
|Offscreen MSAA not supported||Offscreen MSAA not supported|
|35 fps||18 fps|
|39 fps||22 fps|
|59 fps||53 fps|
|122 fps||87 fps|
So, we see that PowerVR SGX 554MP4 (iPad 4) outperforms PowerVR SGX 543MP4 (iPad 3) by an average of 1.5 times. As for the Android rivals, they are not even up to the iPad 3 yet.
|Samsung Galaxy Note 10.1||ASUS Eee Pad Transformer Prime||ASUS Padfone (in tablet module)|
|16 fps||16 fps||18 fps|
|15 fps||11 fps||11 fps|
|16 fps||–||12 fps|
|11 fps||14 fps||16 fps|
|11 fps||9.3 fps||9.8 fps|
|58 fps||54 fps||44 fps|
|58 fps||33 fps||23 fps|
What does this mean in practice? First of all. that games for iPad can be more beautiful than for Android tablets. True, the key word here is “may”. And it is not at all a fact that they really will be. First, most of the major publishers are now looking to create multiplatform projects. And they are unlikely to draw significantly more beautiful graphics for the iPad than for top-end Android tablets. Most likely, Android tablets will be the benchmark. Consequently, the potential of the iPad 4 GPU will remain (at least for the first time) undisclosed. Secondly, even if you look at the situation within the framework of one platform (iOS), it is unlikely that in the next year and a half, developers will create games that require the performance of iPad 4 and for which the performance of iPad 3 is not enough. Of course, in two years, when the iPad 5 and iPad 6 are released, the system requirements will be written: “iPad 4 and newer.” But that will be in a couple of years. Today, you probably won’t be able to feel the difference in real-world applications between iPad 3 and iPad 4, despite the impressive difference in benchmarks.
As a matter of fact, the Lightning connector is the only external difference between iPad 4 and iPad 3. Therefore, if you buy a new product from your hands, pay attention that the connector is a small oval (Lightning), as in the photo below, and not long and narrow (traditional 30.pin connector).
As we remember, iPad 3 also did not differ very much from iPad 2. However, there were still some design changes. And the main one is an increase (albeit small) in mass and thickness. In the case of the iPad 4, there is no change in size and weight, or any other external nuances. Again, the only thing that visually differs iPad 4 from iPad 3 is Lightning instead of 30-pin dock connector.
It would be strange (for obvious reasons) to draw any conclusions regarding the iPad’s design. But note that since the release of the iPad 3, this design has not become outdated at all and still looks relevant (though not much time has passed).
Screen and software
Like the iPad 3, iPad 4 features a remarkable Retina display. The 2048×1536 resolution at the time the iPad 4 was released was not surpassed by competitors, and in other respects, the iPad 4 screen is great. True, in mid-November, a 10-inch Google Nexus 10 tablet with a resolution of 2560×1600 (and a pixel density of 300 ppi) appeared on sale in some Western countries, and this is more than the iPad 3 and 4. But the Nexus 10 screen we have not yet been able to evaluate (but we will definitely do it!).
As for the iPad 4, we did not notice any differences compared to the iPad 3 screen. Apparently, this is the same display. But this is good, because, we repeat, at the moment this is almost the best display in 10-inch tablets.
Here is a detailed examination of the Retina screen, carried out earlier by the editor of the sections “Monitors” and “Projectors and TV” Alexei Kudryavtsev.
The front surface of the tablet is covered with a glass plate with a mirror-smooth surface. Resistance to scratches is available. An anti-glare filter, judging by the reflection of bright light sources, or not, or it is not very effective (the first iPad has about the same). There is a special oleophobic coating on the outer surface of the screen, which to some extent prevents the appearance of fingerprints and makes them easier to remove. Although, for example, the same ASUS Eee Pad Transformer Prime had an oleophobic coating more effective, this can only be confirmed by direct comparison (the old iPad has an oleophobic coating or not, or it is very “weak”).
With manual brightness control, its maximum value was 330 cd / m² (iPad 2. 280 cd / m²), minimum. 2.8 cd / m² (25.2 cd / m²). As a result, at maximum brightness in bright daylight, it will be possible to see something on the screen, and in complete darkness, the brightness can be lowered to a comfortable level. Automatic brightness control works “in the style of Apple”, which is thoughtlessly copied by other manufacturers (it does not apply to Samsung): in the “Auto” mode, when the level of ambient light increases, the brightness increases, but when it decreases, it remains unchanged, and the corresponding decrease in the brightness of the screen we did not wait. However, if you put the tablet into sleep mode and turn it on again, then the brightness will be set in accordance with the ambient light level. The minimum and maximum levels in Auto mode depend on the position of the brightness adjustment slider. So, when the slider is set to the maximum, the automatic adjustment in bright light sets the brightness to the maximum. 330 cd / m², in the dark. at 300 cd / m² (which is a lot). If the slider is located approximately in the middle, then in bright light it will be about 250 cd / m² (optimal), in the dark. 4.5 (which, of course, is too little). In general, the creators of the iPad need to discard their dogmas, allow the brightness to not only increase, but also decrease automatically, and at the same time, bring the matter to the end. allow the user himself and explicitly to set the limits of automatic brightness adjustment. The brightness control is apparently carried out by adjusting the voltage on the backlight LEDs. Most likely, there was no Bosch without pulse-width modulation (with its help it is more economical to regulate the voltage), but it has a high frequency and there is a smoothing filter in front of the LEDs. As a result, the backlight, regardless of its intensity, has a barely pronounced modulation with a frequency of slightly less than 16 kHz. For example, this is how the brightness versus time graph looks like in a 2 ms window (along the vertical axis. brightness in arbitrary units):
Most manufacturers in their devices with LED backlighting (tablets, laptops, monitors) adjust the brightness using pulse width modulation (PWM) with a change in amplitude from 0 to 100% rectangular pulses. And although the negative effect of PWM backlighting with a sufficiently high frequency (from 180 Hz and above) still needs to be confirmed, Apple still needs to be given credit for its devices (at least, those that we tested. iMac, Apple LED Cinema Display. Apple Thunderbolt Display, MacBook Air and iPad), the backlight does not flicker. The “old” iPad also lacks PWM brightness, and automatic brightness adjustment works in a similar way.
The New iPad uses an IPS-type matrix, so the screen has very good viewing angles without inverting shades and without significant color shift, even with large gaze deviations from the perpendicular to the screen. True, which is typical for any IPS-matrix, the black field is lightened when deviated diagonally: the left corners (when oriented downward with the Home button) remain close to neutral gray when deviated to the right, but when deviated to the left, the right corners acquire a pronounced purple tint. With a perpendicular view, the uniformity of the black field, with the exception of a couple of local areas on the border of the screen, is good (the first i Pads also have an IPS matrix, but with a more pronounced purple tint when the gaze is diverted to the corners). Black-white-black response time is 14.4 ms (7.8 ms on, 6.6 ms off). The transition between mid-tones of 25% and 75% (by numerical color value) takes 25.1 ms in total. The matrix is significantly faster than typical IPS solutions used in tablets (we did not measure the response time of the first two iPads.) For the 32-point gamma curve, the exponent of the approximating power function turned out to be 2.19, which corresponds to the standard value in 2.2, while the real gamma curve practically coincides with the power dependence.
The first two iPads have a similarly good gamma curve.
The contrast is quite high. 830: 1 (in the “old”. 740: 1). The color gamut is exactly sRGB:
The iPad 2 is getting worse: like the vast majority of tablet IPS screens, the color gamut is noticeably narrower than sRGB:
The Sony Tablet P is also close to sRGB coverage, but perhaps this dual-screen tablet uses VA matrices, and not IPS, as we suggested in the article. While this question remains open.
The spectra of the “new” iPad confirm what was said about the color gamut:
For comparison, the spectra of the iPad 1 and 2 screen:
It can be seen that in the “old” iPad the matrix light filters mix the components together. This technique allows you to increase the brightness of the screen with the same energy consumption for the backlight. In the new iPad, blending is exactly what should result in standard coverage.
The color temperature balance is good. shades of gray have a color temperature of about 7000 K. but the deviation from Spectra of a black body (delta E) is relatively large (due to some excess of green component), although below 10, which is considered acceptable for a non-professional device.
The screen of iPad 1 and 2 is at least somewhat better than the new one, albeit in small details: the color temperature is a little closer to the standard 6500 K, the delta E changes less and less when going from white to shades of gray.
In total, the screen of The New iPad is distinguished not only by its high resolution, but also by excellent color reproduction. in particular, an almost perfect gamma curve and standard color gamut. As a result, photos and videos on this tablet will look exactly as they should be displayed on a “consumer” device. Those who are paranoid about PWM in the backlight will be glad that Apple has not changed its tradition in this device either. the backlight flicker is not detected even by a hardware test. Well, with the peculiarity of the algorithm for automatically adjusting the screen brightness, the owners of this gadget will have to put up with it. or, even easier and more pleasant, convince themselves that this is how everything should work 🙂
Exact screen dimensions: 24.6 cm (9.68 inches) diagonal, 19.8 cm wide, 14.9 cm narrow.
In terms of software, the iPad 4 is also nothing new. Except for the fact that the iPad 4 comes with iOS 6 preinstalled, while the previous model ships out of the factories with iOS 5. But it can be upgraded to iOS 6.
IPads have always had very decent battery life. iPad 4 is no exception. over, with maximum GPU load and maximum screen brightness, it will work even longer than iPad 3. this was shown by GLBenchmark 2.5.1. An Egypt HD scene fired at 60 fps, the iPad 4 was able to play at 100% screen brightness for 5 hours. The iPad 3 had a worse result. about 4 hours. From which we can conclude that the new SoC is not only more efficient, but also more energy efficient.
With other uses, the duration of the iPad 4 battery life has not changed compared to the iPad 3: about 10 hours when reading or quiet (without too frequent page refresh and downloading heavy content) web surfing via Wi-Fi, about 5, 5 hours of online video playback via browser. The identity of the results is clear: the battery is the same here (Apple traditionally does not report its capacity, but such a conclusion can be drawn from the data provided by the company on the operating time), the screen is the same, so during normal use, which does not imply an increased load on the SoC, there will be no difference can.
|4th generation iPad||3rd generation iPad|
|about 10 hours||about 10 hours|
|about 5.5 hours||about 5.5 hours|
|about 5 hours||about 4 hours|
The rear camera in iPad 4 is identical in resolution and aperture to the third generation iPad: 5MP and f / 2.4. But the front camera of the iPad 4 has a resolution of 1.2 megapixels, which is higher than that of the iPad 3. In addition, the front camera supports 720p video for FaceTime video calls. Overall, in terms of cameras, the iPad 4 is identical to the iPad mini. This, of course, is very strange, since the iPad 4 is a top-end device, and one could expect from it the same camera as the iPhone 5. On the other hand, hardly anyone will use a 10-inch tablet for taking photos often, but for occasional shooting, the rear camera is very good.
Let’s start with a 100% fragment of the shot from the window of a building, on a cloudy day. Here and below, there will be a frame of iPad 4 on top, and below. iPad 3.
As you can see, the pictures are almost indistinguishable, the only slight difference is the white balance. Recall that almost all shooting parameters (including white balance) are set automatically by the cameras of iOS devices, and the user does not have the ability to adjust them manually.
Here, too, the results are very similar in terms of the picture and the same in terms of shooting parameters. both tablets set ISO 800 and shutter speed 1/15 s. But the result, oddly enough, the iPad 3 turned out even slightly better (the noise is more noticeable, but there are more details).
The last photo test. capturing text. both devices passed without problems.
This test shot leaves no doubt that the slight difference in the picture is due to differently set white balance, and not due to shooting conditions (which might have changed slightly over the time between shots). It’s a shame that the iPad camera’s white balance can’t be adjusted, but the color distortion is by no means catastrophic.
When shooting video, we still have no complaints about the iPad. The rear cameras of both tablets shoot in Full HD, with very good clarity and color reproduction. But here’s what’s interesting: iPad 3 has a higher video bitrate! Here are examples of iPad 4 (66.7 MB, 31 seconds), iPad 3 (77.9 MB, 30 seconds).
In general, the iPad 4 camera left a good impression, but it is embarrassing that the cameras in Apple tablets of the 3rd and 4th generations, while the known characteristics are identical, still behave a little differently. In particular, video from iPad 4 has a lower bitrate, and the color rendition when shooting a photo is slightly different.