A power LED is present to indicate the state of the monitor; blue, shown below, indicates the monitor is on and amber indicates a low-power state (i.e. The AOC i2757Fm is one of several new monitors offering a 27” IPS panel with a 1920 x 1080 (Full HD) resolution. This indicates a low level of viewing angle dependency to the monitor’s gamma curve and compares favourably to VA and TN matrices which show obvious red and green transitions. The more muted shades of the racing environments were also nicely represented with appropriate richness and excellent subtle variety.
A very mild pink hue could be seen at the extreme left edge.
We observed the following. The first part shows the Lagom text, the second part shows a mixed desktop background and the third part shows a dark desktop background.
This forces the monitor to perform a range of typical grey to grey transitions between one colour and another.
Overall the AOC i2757Fm is a well thought-out monitor that really does justice to the relatively new concept of affordable Full HD 27” IPS screens. The bright neon shades had a good level of pizazz complemented nicely by good rich deep shades.
There was certainly a general bias towards brighter output using this mode with even mixed scenes tending to be overly bright and commonly edging towards full brightness. The front of the AOC i2757Fm is dominated by a large screen area with a reasonably light matte anti-glare surface.
The video below shows the effect of ‘off-centre’ viewing angles on the image. Overall the AOC i2757Fm is a well thought-out monitor that really does justice to the relatively new concept of affordable Full HD 27” IPS screens.
They do help to highlight any issues that film fans may experience specific to a monitor, such as overdrive artifacts – and in this case there were none of those.
To give you a better idea of what to expect from the AOC i2757Fm during normal use we also tested a number of games, movies and other applications to subjectively assess performance.
We also assessed performance using some specific contrast tests, which are part of the Lagom LCD tests.
The video below shows the effect of ‘off-centre’ viewing angles on the image. The first game title used, Battlefield 3, was given a respectable contrast performance by the monitor. The central point (‘quadrant 5’) was essentially the same brightness as the brightest point to the right of it, being an imperceptible 0.5 cd/m2 dimmer under our test settings. The image below shows the monitor’s coverage as a red triangle and the sRGB space as a green triangle.
The bright and flashy colours found on the cars themselves, around the track and on the in-game menus were displayed in a rich and vibrant way overall. Although there were some niggling issues inherent to the panel type, such as IPS glow, the overall distinction between light and dark was satisfying. Some eye-catching bright greens, rich golds and deep reds were perhaps the most impressive shades here. The following observations were made.
The icons look a bit aliased and the overall look is not as polished as the OSDs of some other manufacturers but there are some useful features there. AOC I2757FM.
Overall though it’s a close match which is good news as far as accurate colour representation goes.
We also tested the racing game Dirt 3 where IPS glow once again ate away at some of the detail in dark areas. AOC Flicker-Free Technology utilises a DC (Direct Current) backlight panel, reducing flickering light levels. A unique visual identity, attractive pricing and some nice extras such as MHL and a ‘dual function’ stand Want to watch a Blu-ray movie in full quality, enjoy games in high resolution or read crisp text in office applications?
Dirt 3 is a great test for colour reproduction with an exceptional variety of shades on offer. Without even having to make specific adjustments to individual colour channels or tweak gamma modes the image produced was rich and lively. There were no prolonged ‘smeary’ trails and no artifacts from overly aggressive pixel overdrive, just a slight trail that looked like a sort of vibration around textures.
A very common method used to dim backlights on LCD monitors involves pulsing the backlight rapidly on and off to varying degrees, something called PWM (Pulse Width Modulation). The Gymkhana mode on this title is perhaps one of the least forgiving scenarios in which to test a monitor – it can bring any 60Hz LCD to its knees. Viewing angles
From this view of the colour gamut it corresponds closely with sRGB. When it came to responsiveness AOC had once again unlocked a lot of potential from the panel.
This was more like a mild mist than a dirty and grainy matte texture thanks to the relatively ‘light’ anti-glare screen surface. Dirt 3 is a great test for colour reproduction with an exceptional variety of shades on offer.
It is also worth pointing out that the i2757Fm is only available in certain regions.
There are several other ways to fix this issue including using a small tool which edits the graphics driver, but setting a custom resolution is simple and effective. The Lagom viewing angle tests reaffirmed the strong colour consistency of the display. This model makes use of thin and shallow bezels to maximize apparent screen space. Coupled with the excellent shade range outputted by the monitor the image was certainly diverse.
You get a set of low-power integrated stereo speakers at the bottom of the bulge, facing downwards.
The bright and flashy colours found on the cars themselves, around the track and on the in-game menus were displayed in a rich and vibrant way overall. Given the strong and obvious overshoot (inverse ghosting) using the ‘Strong’ setting, ‘Medium’ is the optimal mode to use. Another trend that has come into play is the decreasing size of the bezel surrounding the screen.
The greyscale gradient appeared very smooth with no banding.
Response times Overall colours within the environment were well-placed and appropriate with good earthy hues and appropriately saturated sky blues.
This trailing became more palpable as the pace of action was increased, manifesting itself as a bit of a smeary blur when turning in a light vehicle such as a jeep.
Rather than getting hung up on a few milliseconds here and there it is best to accept that for all intents and purposes this monitor is free from input lag.
This ‘invisible bezel design’ was quite controversial and caused panel manufacturer LG and their partners to rightfully receive a fair bit of flak for their misleading marketing.
This helps reduce cost and is of no consequence to the majority of users if properly implemented. Overall colours within the environment were well-placed and appropriate with good earthy hues and appropriately saturated sky blues. If you are using an Nvidia graphics card then you’ll have to make a small adjustment in the graphics driver to get the monitor to output a proper image when using HDMI – but that’s not AOC’s fault. The central point (‘quadrant 5’) was essentially the same brightness as the brightest point to the right of it, being an imperceptible 0.5 cd/m2 dimmer under our test settings.
There were no overdrive artifacts visible and obstacles around the track were still distinct enough to be seen and maneuvered around. There was no noticeable dithering, either.
This is typical of an IPS monitor with well-balanced grey to grey acceleration.
Performance on the black levels test was excellent with all blocks visible and showing good gamma consistency independent of on-screen position.
Refresh rate is one factor to consider as it dictates how much information the monitor can visually pump out and respond to every second. Blue= 50 In our subjective assessment of colour performance we used some familiar game and movie titles to compare representation with a number of other calibrated reference displays. A unique visual identity, attractive pricing and some nice extras such as MHL and a ‘dual function’ stand
There was a strong blur-like trailing here with colours seeming to smear across the screen.
Fortunately the strong contrasting bright colours held the atmosphere together. On top of this came a pleasing contrast performance that is really as strong as you’ll see on an IPS panel.
Using a similar method to that used in our other recent monitor reviews we recorded an average input lag of roughly 4ms (quarter of a frame).
Given the low frame rate of current Blu-ray film titles (which is around 24fps) they are not exactly the most stressful or useful test run at the limits of a monitor’s pixel responsiveness. Author: Adam Simmons With overdrive disabled you can see a relatively bold first trail and a very faint second trail. The menu system follows a similar design to that used on other recent AOC monitors such as the i2353Fh. The monitor includes a configurable pixel overdrive with 4 distinct settings. The contour map below gives a visual representation of these results, combined with a bit of extrapolation to fill in the gaps. Another important factor is input lag which dictates how rapidly the monitor processes the signal from the GPU (raw input lag) and shifts its pixels into the correct position (overall display latency) to output the image. There was no noticeable dithering, either.
Some of the vibrant elements within the game, such as marker text and roaring flames, had a good rich depth to them.
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