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Thread: Dell S2740L Review: 1920x1080 Edge-to-Ege Glass IPS

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    Dell S2740L Review: 1920x1080 Edge-to-Ege Glass IPS



    Video Review


    Check out my initial impressions video!




    Product Page: S2740L 27" Monitor with LED Panel Details

    All testing done using an i1 Display Pro Colorimeter (a colorimeter measures the colors, contrast, brightness, gamma, ect), basICColor 5 (used to measure the color presets and for ICC profiling), HCFR (software used to measure the default colors). I used the Dual-link DVI input+cord to connect the Dell S2740L to my PC.

    PixerPixAn's (free software) Chase, Streaky Pictures and Flag test were all used to test the pixel response times

    Borderlands 2 (PC), Uncharted 3 (PS3), Gears of War 3 (360), Dirt 3 (PC), Battlefield 3 (PC), Left 4 Dead 2 (PC), Painkiller: Hell & Damnation (PC), and Resident Evil: 4 (360) were all used to test the pixel response times.

    LCD monitor test images test patterns were used to test the colors along with tons of photos from wallpapers wide and games.

    PC Specifications:

    Motherboard: Gigabyte X58-UD9
    CPU: Intel i7 930@ 3.2 ghz
    Case: Lian Li PC80
    GPU: MSI Twin Frozr 4gb GTX 680+GTX 480 PhysX
    Ram: 6gb Patriot G Viper Extreme DDR3 PC3-16000 2000mhz
    Power Supply: Antec High Current Pro 1200w



    Table Of Contents


    Ergonomics
    Ghosting
    Input Lag
    Default Colour Presets
    Calibrated Image Quality
    Screen Uniformity
    Viewing Angles
    IPS Glow
    Photo Gallery
    Xbox 360
    PS3
    Settings
    Conclusion


    Buyer BE AWARE! The Dell S2740L is VERY Reflective since it uses Edge-to-Edge Glass vs the typical Glossy Coatings!


    The blacks also look gray due to the use of glass. The Samsung S27B970D on the left also uses edge-to-edge glass just like the Dell S2740L & Apple Cinema Display.



    Ergonomics

    See the start of the video for ergonomic information!


    Last edited by NCX; 01-09-2014 at 07:27 AM.

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    Ghosting


    Pictures taken with the following settings: ISO 200, F 2.1, shutter speed 1/250 with PixerPixAn's Tempo set to 16 (maximum). I always use the same PixerPixAn settings, sometimes I use different camera settings but always compare the monitor I'm reviewing to a reference display.

    Dell S2740L


    CrossOver 2720MDP Gold

    When viewing PixerPixAn, the dark overshoot is very apparent while the CrossOver 2720MDP's car only appears to have the tinciest bit of blur on the back edges. When playing with the PixerPixAn tempo (settings 1-16 these images were taken @16) overshoot starts to appear on the Dell S2740L with a setting of 9 while the CrossOver 2720MDP does not ghost until the tempo speed is set to 13 is used.

    The Dell S2740L is one of the fastest 60hz displays I've ever used. Fast camera pans are very clear, however it is too aggressively overdriven, resulting in obvious light-medium amounts of overshoot (bright & dark halo or shield forming around moving objects). In games the overshoot is quite easy to spot even when objects move or panning the camera slowly.

    For example, when racing in Dirt 3 in the 1st person mode, even slight corner turns would result in obvious overshoot appearing on many objects. During one of the night time races, even slight camera pans would reveal strong dark overshoot on the white moon which was against a dark blue sky.

    The longer the overshoot is, the higher rating it gets (light-medium-strong).

    In the below image, the black line points to the bright overshoot which I would classify as a light amount:


    In the below image, the dark line points to the dark overshoot which I would classify as light amount


    I would classify the amount of dark overshoot highlighted in the below image as a medium amount of dark overshoot.:

    In PC games (mouse=point and look aiming vs slower controller pans) the overshoot is visible with low-medium speed camera pans. Gamers who use high mouse sensitivities & move the camera/sight rapidly are less likely to spot the overshoot ghosting.

    Regular gamers who research displays before buying will probably notice the Dell S2740L's overshoot, so be warned. Serious gamers who have plenty of LCD (and possibly CRT) experience should avoid the Dell S2740L. The S2740L suffers from the most obvious ghosting I have ever seen on a monitor aside from the old, very slow C-PVA (Samsung F2380 &F2380MX) & 1st gen A-MVA monitors (BenQ EW2420).

    I could list all of the content the S2740L showed obvious overshoot ghosting in, but I'll slice to the pursuit instead:

    The Dell S2740L suffers from obvious overshoot ghosting when content (people/objects) move slowly while most monitors only overshoot when content moves very quickly. Content is not blurry due to the very fast pixel response times which keep the color streaking/smearing at a minimum, instead movements remain clear but are followed by overshoot (glow/shields which form behind and/or around moving objects) which I find far more disturbing & obvious compared to the low amounts of color streaking/smearing most modern monitors suffer from.


    Last edited by NCX; 01-28-2014 at 05:58 AM.

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    Input Lag


    After setting it up next to my CrossOver 2720MDP (12-14ms delay), Samsung S27A850D (13.6ms measured by PRAD with an oscilloscope) and Asus VG23AH (2-5ms) I instantly noticed that the Dell S2740L was delay free

    Using an oscilloscope PRAD measured a 0.8ms delay.

    Legend:
    Blue=Suitable For ALL Enthusiast CRT & 120hz+ Users
    Purple=Suitable For Some Enthusiast & ALL Regular Gamers
    Orange=Not Suitable for Enthusiast Gamers & Some Regular Gamers
    Red=Not Suitable for Enthusiast or Regular Gamers: CASUAL GAMERS ONLY

    HP 25XW: <2.5ms
    HP 27CW: <2.5ms
    Crossover 434k: 20ms
    BenQ BL3201PH: 1-3ms @60hz
    BenQ XL2420G: 1-3ms via Dual-Link DVI @60hz
    LG 27MP35VQ: 1-3ms via Dual-Link DVI @60hz
    BenQ XL2420G: 1-3ms via Dual-Link DVI @60hz
    Asus PB278Q (2014)/PB278QR: 1-3ms via Dual-Link DVI
    Samsung S27D850T: 28ms via Displayport & 24ms via DL-DVI/HDMI
    AOC Q2770PQU: 20ms
    MOTV M2700: 1-3ms
    X-Star DP2710: 1-3ms
    Samsung S24D590PL: 1-3ms
    Monex M27QSM: 1-3ms
    Crossover 2755AMG: 18-20ms
    BenQ BL2710PT: 17-19ms
    Glossy Qnix QX210 96hz:
    Glossy Qnix QX2710 60hz: 1-3ms
    NEC P242W: 16.5ms signal delay measured by PRAD
    Matte Qnix QX2710 60hz: 1-3ms
    Samsung S27C750P: 2.5ms Signal Delay Measured by PRAD
    Viewsonic VP2770: 7ms signal delay measured by PRAD
    Asus VG248QE: Signal Delay=1.6ms @60hz and 0.7ms @144hz measured by PRAD
    Dell U2713H Game Mode: 14ms (Measured by PC Monitors)
    Dell U2713H: 30ms signal delay measured by PRAD
    ViewSonic VX2770SMH-LED: 4-5ms
    Asus PB278Q: 17.8ms signal delay measured by PRAD
    Dell S2740L: 0.8ms signal delay measured by PRAD
    Asus VG23AH: <5ms
    CrossOver 2720MDP Gold: 14ms
    Samsung S27A850D: 13.6ms signal delay measured by PRAD
    Samsung S23A700D: 12-13ms @120hz
    BenQ XL2420T: 3ms @120hz
    Asus VG236H: 3ms @120hz
    Asus PA238Q: 2.2ms signal delay measured by PRAD
    Samsung S27A950D: 13ms @120hz
    Last edited by NCX; 10-07-2015 at 09:58 AM.

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    Default Colour Presets





    The Dell S2740L comes set to the Standard mode by default and is very bright. The Standard mode provides the best colours, which are simply amazing, once the brightness is turned down to 35. The Dell S2740L also has a very, very minor green tint, but it has the least colour dominance I've seen on a display, ever. The S2740L looks a little washed out due to the low default gamma, however once the brightness is decreased (I randomly chose 35), the gamma averages around 2.26 (2.22 is the target), resulting in gorgeously saturated colours and proper shadow detail.

    The Dell S2740L has three out-of-the box issue

    1.) very, very minor green tint...it has the least amount of a colour dominance I have seen on a display
    2.) slightly washed out gamma due to the low default gamma.
    3.) Black bezel is so dark the blacks can't blend with the bezel like they would on a display with a normal bezel,
    4.) The blacks always look grayish due to the use of glass

    Once the brightness is turned down, the Dell S2740L's image quality becomes essentially perfect, and as good as it gets, and the contrast rises to a phenomenal 1200:1! Remember that the use of edge-to-edge glass makes the Dell S2740L more reflective than a regular glossy display and the blacks look grayish so the high measured contrast ratio is basically meaningless.





    Color Preset Chart May 2015 by thedeepinthesky, on Flickr
    Last edited by NCX; 05-20-2014 at 10:02 PM.

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    Calibrated Image Quality





    In terms of the calibrated image quality, nothing really changes, the image quality remain amazing! Only the color temperature needed to be brought down to 6500k with a few minor RGB adjustments in the menu to provide slightly more accurate image quality.

    The colors and shadow detail are essentially as good as a monitor can provide, however the blacks always look grayish and the display is extremely reflective due to the use of glass.

    Example of the Samsung S27B970D (left) which also uses edge-to-edge glass just like the Apple Cinema/Thunderbolt Display and Dell S2740L next to the semi-glossy NEC P242W.


    Last edited by NCX; 01-09-2014 at 07:39 AM.

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    Screen Uniformity



    Remember, when taking pictures of black screens on IPS/PLS, take the pictures from at least 6ft back and try and be directly in front to avoid seeing off angle IPS/PLS glow.

    Dell S2740L (left) vs. CrossOver 2720MDP (right)


    Dell S2740L (left) vs. CrossOver 2720MDP (right)


    This image was taken from a little bit closer to highlight the very minor light leakage in the bottom right corner.

    CrossOver 2720MDP



    Last edited by NCX; 01-09-2014 at 07:46 AM.

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    Viewing Angles


    Left Dell S2740L vs Right CrossOver 2720MDP






    The Dell S2740L uses an AH-IPS panel, which as far as I know offers zero advantages over other IPS panel types. The S2740L's viewing angles are very good, and miles better than any TN panel. As demonstrated in the above images, the Crossover 2720MDP (S-IPS) has wider viewing angles, but the S2740L's are still very good.

    One can sit back in bed, recline in a chair or sit off to the side and not have worry about color degradation or gamma shift. So far, only the Samsung S27A850D (PLS 9.5/10) and Crossover 2720MDP I've reviewed have offered superior viewing angles. Perfect ratings are reserved for long out of production IPS panels with A-TW polarizers, CRT's and Plasma television.s


    Last edited by NCX; 01-09-2014 at 07:45 AM.

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    IPS Glow






    The Dell S2740L (AH-IPS) and CrossOver 2720MDP (S-IPS) have almost identical amounts of glow. Nothing negative can be typed about the Dell S2740L's glow since it is an inherent flaw of IPS/PLS panels without At-TW polarizers.

    [/center]
    Last edited by NCX; 01-09-2014 at 07:42 AM.

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    Last edited by NCX; 10-09-2012 at 08:00 AM.

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    Xbox 360


    To get audio with external sources use an Xbox 360 RCA adapter



    The Dell S2740L works properly with the xbox 360.

    Use the following Image Settings

    System Settings> Console Settings> Display> Reference Levels: Intermediate

    Under the Display menu go to the Colour Space Menu and use the RGB Settings.
    Last edited by NCX; 10-09-2012 at 07:54 AM.

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