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Brightness, Black Level, Contrast Ratio, And Gamma

Samsung Galaxy Note 10.1 (2014 Edition) Review: Wi-Fi Vs. LTE
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Brightness

Brightness (also known as white level) measurements are taken by recording the luminance output of each device displaying a full white pattern, with the device's brightness slider set to both minimum and maximum values.

Both Samsung tablets offer excellent minimum brightness levels and respectable maximums. The Nexus 7 (2013) shows the widest range, with a respectable lower level and the brightest display of the five units when set to max.

In order to make device comparison possible, the rest of our display measurements, along with our battery testing, are performed with the screen set to a standardized white level of 200 nits.

Black Level

Our black level measurement is the luminance output of a full black pattern after the luminance output of full white has been standardized to 200 nits. It's important to note that AMOLED displays will always measure a black level of zero, since their pixels simply turn off to render black.

Traditionally, Samsung's AMOLED-equipped devices dominate in this benchmark, as AMOLED displays have, indisputably, the best black levels. In this test, the Nexus 7 (2013) does very well, followed by the iPad Air's Retina display. The Tegra Note 7 and both models of the Galaxy Note 10.1 (2014 Edition) don’t do quite as well.

Contrast Ratio

Contrast ratio is the difference between a full white pattern and a full black pattern. Due to their zero reading on the black level tests, AMOLED displays are said to have an infinite contrast ratio.

If there is another test where we would have loved to see one of Samsung's renowned AMOLED displays, it would be this one. In this case, the Nexus 7 shows the best contrast ratio, followed closely by Apple's iPad Air. Both the Wi-Fi and LTE variants of the Galaxy Note 10.1 (2014 Edition) finish with relatively disappointing results compared to the competition and Samsung's own AMOLED-based devices.

Gamma

A gamma curve of 2.2 is what we optimally want to see. The reason for this is that images captured in the sRGB color space are encoded in a gamma of about 1/2.2. A gamma curve of 2.2 allows the resulting images to be viewed at the ideal brightness and contrast.

In gamma testing, the iPad Air comes out on top with a score closest to the ideal value of 2.2. The Nexus 7 (2013) and Galaxy Note 10.1 (2014 Edition) Wi-Fi come close as well. EVGA's Tegra Note 7 is off a bit, while the Galaxy Note 10.1 (2014 Edition) LTE is further away from the mark. While this might seem odd, considering that the LTE and the Wi-Fi models share the same screen, we know that LCD panels, even of the same make and model, vary from one unit to the next. This is an excellent example of that in practice.

Color Temperature

Color temperature is a measurement in Kelvin, which is used to describe how “warm” or “cool” a given display is. Ideally, as long as you're not viewing your device in direct sunlight, this should be in the 6500 range. Higher color temperatures result in a cool, bluish hue, while lower temperatures deliver a warm or reddish tone.

In color temperature measurements, the Note 10.1 (2014 Edition) Wi-Fi come very close to 6500, followed closely by the LTE version, at around 6650. The iPad Air follows in third place. Out of the five tablets tested, these three are the most balanced. The Nexus 7 (2013) and Tegra Note 7 both fall a bit on the colder side, though not enough for their displays to be considered poor.

Color Gamut

Our volume measurements are compared against both the sRGB and AdobeRGB color gamuts. A reading of 100 percent on sRGB and 72 percent on AdobeRGB is the optimal reading for viewing the vast majority of digital consumer content. A lower reading is typically accompanied by an overly red or yellow image, and a higher reading is usually too blue/green.

Since the two versions of the Galaxy Note 10.1 (2014 Edition) have the same LCD TFT display, we aren't surprised to see that both tablets measure essentially the same. The iPad and Nexus 7 (2013) are a few percentage points closer to their ideal targets, while the Tegra Note 7 leaves a bit to be desired. Both variants of the Note 10.1 (2014 Edition) fall somewhere in between.

This is another test where the Note 10.1's use of TFT, as opposed to Samsung's hallmark AMOLED, sets this tablet apart from the rest of the company's offerings. Typically, the AMOLED's nearly full-AdobeRGB gamut volume is a potential liability, since most digital content is made for sRGB. Unfortunately, the Note 10.1's TFT isn't right on the money either, and its less-than-sRGB gamut may be a shock to those coming from the company's AMOLED devices, as sub-sRGB gamuts typically appear too red/yellow, while the volume on 100% AdobeRGB devices appear too blue/green.

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  • -3 Hide
    blackmagnum , July 8, 2014 1:05 AM
    The only possible way Samsung mobile devices can be a worthwhile alternative to Apple is when they ditch the every-man Android and create their own tightly controlled/ managed OS like Apple. Do that and consumers might not feel like they're just buying the Samsung for the hardware.
  • 0 Hide
    Farrwalker , July 8, 2014 8:33 AM
    On page 7. Results: CPU Core Benchmarks:
    Your bar graph "MobileXPRT 2013" seems to be in error.
    For example, the text says, "Note 10.1 (2014 Edition) Wi-Fi leads with 300 points . . ."
    but the bar is the shortest and indicates less than 150 points.
  • 0 Hide
    blueer03 , July 8, 2014 9:30 AM
    You need to proofread this big time. From page 9:
    Samsung's Exynos-based Note 10.1 (2014 Edition) Wi-Fi holds its own against the Tegra Note 7, while the LTE version of the Note 10.1 (2014 Edition) again falls significantly behind its Snapdragon 800-powered Wi-Fi counterpart.

    And this happens all throughout. The LTE is a Snapdragon, the Wifi is an Exynos. Keep repeating that to yourself as you re-write the descriptions and it will make this easier to read.
  • 1 Hide
    Kevin Harrelson , July 8, 2014 9:54 AM
    We got one of these for my son (age 13) to help with his school work. We got it from Best Buy and got the extended warranty. Both sound dumb, but it was actually a good move! The backlight has gone out on this thing TWICE. I happen to think that it is a lovely little tablet, but the backlight is a major reliability issue.
  • 1 Hide
    adamovera , July 8, 2014 10:48 AM
    Quote:
    On page 7. Results: CPU Core Benchmarks:
    Your bar graph "MobileXPRT 2013" seems to be in error. For example, the text says, "Note 10.1 (2014 Edition) Wi-Fi leads with 300 points . . ." but the bar is the shortest and indicates less than 150 points.

    This benchmark's sub-tests produce scores in seconds (lower is better), and the overall score is given as a typical higher-is-better score, so the lowest bar indicates the fastest completion. Sorry about the confusion, I'll look into other ways to represent this test.
  • 2 Hide
    adamovera , July 8, 2014 10:51 AM
    Quote:
    You need to proofread this big time. From page 9:
    Samsung's Exynos-based Note 10.1 (2014 Edition) Wi-Fi holds its own against the Tegra Note 7, while the LTE version of the Note 10.1 (2014 Edition) again falls significantly behind its Snapdragon 800-powered Wi-Fi counterpart.
    And this happens all throughout. The LTE is a Snapdragon, the Wifi is an Exynos. Keep repeating that to yourself as you re-write the descriptions and it will make this easier to read.

    Good catch, thanks! Fixed.
  • 0 Hide
    Tomtompiper , July 8, 2014 1:30 PM
    The 2014 is almost 5 months old and has been superseded by the Amoled screened Galaxy Tab S 10.1 which wipes the floor with the opposition. http://www.gsmarena.com/samsung_galaxy_tab_s_105-review-1097.php Do try to keep up!
  • 3 Hide
    adamovera , July 8, 2014 2:06 PM
    Quote:
    The 2014 is almost 5 months old and has been superseded by the Amoled screened Galaxy Tab S 10.1 which wipes the floor with the opposition. http://www.gsmarena.com/samsung_galaxy_tab_s_105-review-1097.php Do try to keep up!

    Actually, you'd think this has been phased out, but it's the current 10-inch Galaxy "Note" product, meaning it has the S Pen. The Galaxy "Tab" S does not - still unclear to me what makes the "S" stand out. I believe Samsung is literally attempting to offer an alternative product to every single other device in existence - complete mobile domination. I lost count of their current "Galaxy" line at 11 products, and that was awhile back.

    The duo of Note 10.1 (2014)'s came in very handy both as comparison data in other articles and as testbeds for compiling our benchmark suite. Unfortunately, the article had to be pushed back several times, but the huge hardware difference between products carrying the same name was always something we wanted to illustrate, initially for the chipset-vs-chipset angle, but later for the optimization aspect as well. We're currently working through a small backlog of mobility articles, but each will be more timely than the last. My apologies.
  • 1 Hide
    Blazer1985 , July 8, 2014 6:22 PM
    I really wish Samsung could help the end user distinguish what they are buying. The 2 Note are classified as "LTE" and "WIFI ONLY" which sounds like 2 equal devices except for the sim card slot while they actually have a totally different soc.
  • 0 Hide
    vaughn2k , July 8, 2014 9:03 PM
    ... and Samsung prices are now on par with Apple's. others are okay. Will wait for Asus and other competition. Should be cheaper though...
  • -2 Hide
    Ninjawithagun , July 9, 2014 6:53 AM
    These benchmarks are fundamentally flawed. No where is there mention that both the Nexus and Apple iPad Air use lower resolution displays, which dramatically reduces the overall load on the CPU and GPU vs. the Samsung Note devices. The benchmarks are completely useless since an "apples-to-oranges" comparison is not a valid methodology for comparing these uniquely different tablets. And why was the new Samsung Tab S used instead of the year old 2014 Edition versions? Another "fail" on behalf of the author.
  • 0 Hide
    godnodog , July 9, 2014 11:23 AM
    As a user of the Note 10.1 2012, I have to strongly disagree with the new multitasking sytem, as it is clearly a step backwards from what it used to be, now you can ONLY have 2 windows opened, as I, by not installing the update, can have 4 / 5 / 6 opened, obviously I don´t have them opened, but I frequently have 3 windows opened simultaniously, wich now I can´t have. Also it apperars that the multitask is no longer floating, agains mine that still does. I have experienced no problem whatsoever like you described "were slow, unresponsive, or just plain bad".
  • 1 Hide
    wiltjk , July 10, 2014 7:18 PM
    A key point of your review is that this is about a "pen" tablet. Not having used a physical keyboard since 2003, I am pleased to see some alternatives to the Intel/Windows dominated offerings.

    It is a good review for apples to apples on the Samsung hardware options.

    Would you suggest that this is "as-good-as-it-gets" for the few who prefer pen-based tablets? Any foresight in other pen based tablets?
  • 0 Hide
    Zarathvstra , July 11, 2014 2:23 AM
    Quote:
    These benchmarks are fundamentally flawed. No where is there mention that both the Nexus and Apple iPad Air use lower resolution displays, which dramatically reduces the overall load on the CPU vs. the Samsung Note devices. The benchmarks are completely useless since an "apples-to-oranges" comparison is not a valid methodology for comparing these uniquely different tablets. And why was the new Samsung Tab S used instead of the year old 2014 Edition versions? Another "fail" on behalf of the author.


    Ninjawithagun,
    Tablets are not modular like a pc... whilst it may have been good for the author the resolution issue with these benchmarks, an apples to apples comparison of the individual components would NOT help the user decide which unit as a whole is the fastest as indeed, they are NOT modular.
  • 0 Hide
    Ninjawithagun , July 12, 2014 8:46 AM
    Quote:
    Quote:
    These benchmarks are fundamentally flawed. No where is there mention that both the Nexus and Apple iPad Air use lower resolution displays, which dramatically reduces the overall load on the CPU vs. the Samsung Note devices. The benchmarks are completely useless since an "apples-to-oranges" comparison is not a valid methodology for comparing these uniquely different tablets. And why was the new Samsung Tab S used instead of the year old 2014 Edition versions? Another "fail" on behalf of the author.


    Ninjawithagun,
    Tablets are not modular like a pc... whilst it may have been good for the author the resolution issue with these benchmarks, an apples to apples comparison of the individual components would NOT help the user decide which unit as a whole is the fastest as indeed, they are NOT modular.


    Not true. Most (not all) tablets are in fact modular in that the CPU and GPU operate independently of one another. Case in point, the Apple A7 uses a dual-core 64-bit SOC processor and PowerVR G6430 graphics chip. The Samsung uses the Exynos 5 Octa processor with a Mali-T628 MP6 graphics chip. Your definition of modular is fundamentally flawed in that you think it pertains to physical ability for individual items to removed/replaced. Modular infers to the actual architecture of the system in that several different parts from different manufactures are integrated together to function as a whole unit.
  • 0 Hide
    Zarathvstra , July 12, 2014 6:04 PM
    Quote:
    Quote:
    Quote:
    These benchmarks are fundamentally flawed. No where is there mention that both the Nexus and Apple iPad Air use lower resolution displays, which dramatically reduces the overall load on the CPU vs. the Samsung Note devices. The benchmarks are completely useless since an "apples-to-oranges" comparison is not a valid methodology for comparing these uniquely different tablets. And why was the new Samsung Tab S used instead of the year old 2014 Edition versions? Another "fail" on behalf of the author.


    Ninjawithagun,
    Tablets are not modular like a pc... whilst it may have been good for the author the resolution issue with these benchmarks, an apples to apples comparison of the individual components would NOT help the user decide which unit as a whole is the fastest as indeed, they are NOT modular.


    Not true. Most (not all) tablets are in fact modular in that the CPU and GPU operate independently of one another. Case in point, the Apple A7 uses a dual-core 64-bit SOC processor and PowerVR G6430 graphics chip. The Samsung uses the Exynos 5 Octa processor with a Mali-T628 MP6 graphics chip. Your definition of modular is fundamentally flawed in that you think it pertains to physical ability for individual items to removed/replaced. Modular infers to the actual architecture of the system in that several different parts from different manufactures are integrated together to function as a whole unit.


    This does not argue to the point. Here's a fact and the crux of the matter... An apples to apples comparison of gpu's and processors does NOT tell the user how apps will perform on tablet x when constrained by their other components be it amount of ram, screen res, gpu, cpu etc.

    i.e. benchmarks are not "fundamentally flawed" (nor is my understanding and use of the term modular)
  • 1 Hide
    apertotes , July 14, 2014 4:36 AM
    I think it is deceiving to not point out on the table on first page that memory can easily be expanded with a cheap microsd card. It is not 16/32 gb, it's 16/32+128 gb.
  • 0 Hide
    szalkerous , July 16, 2014 9:21 AM
    At first I thought there was something new, and I realized this is a review for a tablet I bought last year.

    FYI, the KitKat update makes the SD card practically useless. Rooting these tablets is frustrating at best, and the KNOX system is the most terrible idea Samsung ever came up with.

    Looking back, I should have gotten a Nexus.
  • 0 Hide
    apertotes , July 16, 2014 10:06 AM
    Quote:

    FYI, the KitKat update makes the SD card practically useless.


    How can it be useless having 128 gb for music and videos/pictures? Maybe you can afford spotify and paying 15 dollars every month for an upgraded dropbox account, but many people don't, or even if they do, they do not have a reliable LTE signal 24/7.

  • 0 Hide
    SoPhat VaThana , July 17, 2014 1:29 AM
    good
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