http://www.avforums.com/reviews/Pana...25/Review.html
When viewed from the sides the image did not suffer from the usual loss of contrast and colour desaturation that plagues VA panels.
the use of edge backlighting certainly has a detrimental effect on the uniformity of the backlighting. Whilst better than a lot of other displays with edge backlighting there was some slight clouding, especially at the edges themselves.
the screen uniformity could be better, especially at the edges
Backlighting uniformity could be better
http://www.avforums.com/reviews/Phil...37/Review.html
clearly uses a VA panel because, as is usual with this type of display, there is a noticeable drop off in contrast when viewed off-axis.
Off-axis performance is weak
http://www.avforums.com/reviews/Sony...35/Review.html
The first of these is the off-axis viewing angle which whilst not as bad as the latest Samsung Edge LED sets, does suffer the further you move to the sides (or above and below). Colour and contrast do their best to hold up but once over around 40 degrees, they fall off quickly. The second issue is with screen uniformity which can be best described as average on the EX703. Uniformity is the spread of light across the screen which should be uniform. However the Sony does suffer from backlight striping, most notably on the far top edges and bottom corners of the screen.
the off-axis viewing angles are not the widest and image quality does fall off quite quickly as you move to the sides.
Cons
Viewing angle
Screen uniformity and visible backlight stripping/banding
http://www.avforums.com/reviews/Phil...36/Review.html
It was clear to see light pooling in the top third and bottom corners of the screen even when watching bright images. This became more obvious with darker content such as Batman on Sky Movies. Within dark scenes shadow detailing became impossible to make out as the darker areas of the image became just pools of grey with no depth or detail visible. Plus it made the screen uniformity issues more pronounced. This was true in dimmed viewing conditions and in normal daytime viewing and in both out of the box and calibrated modes.
Viewing angles on the Philips are also average at best, with contrast and colour balance starting to suffer as you get beyond the 20 degree point.
Cons
Poor screen uniformity
Visible light pooling from LED edge lighting
http://www.avforums.com/reviews/Tosh...62/Review.html
where the 46SL753 performed badly were its backlight uniformity - which was very poor and its off axis performance
Cons
Very poor backlight uniformity
Very poor off axis performance
http://www.avforums.com/reviews/Tosh...90/Review.html
Screen uniformity was well above average, when compared to some other edge-lit LCDs we've seen with no clouding, but there was visible bleed - in very dark content - from both bottom corners. Like the Panasonic TX-L37DT30 we recently tested, the visibility of the bleed changed with the angle it was viewed from - with right side bleed more prominent when viewed from the left and vice versa.
http://www.avforums.com/reviews/Sony...14/Review.html
the off-axis performance was rather poor and thus we would suffest careful consideration when positioning the display. However, the biggest issue with the KDL-40EX524 related to the use of LED edge lighting which resulted in very poor backlight uniformity. It is unfortunate that all the manufacturers seem so obsessed with ultra-thin displays because we have yet to see a display that uses LED edge lighting but doesn't suffer from problems with backlight uniformity.
Cons
Very uneven backlight uniformity
Poor off-axis performance
http://www.avforums.com/reviews/LG-L...26/Review.html
First and foremost was the light pooling, with large patches where the screen noticeably lightened as a result of how the side-lighting is dispersed to the display.
It is, again, a common problem with this particular technology but the LV550T is possibly the worst we've seen in this regard
http://www.avforums.com/reviews/Tosh...20/Review.html
The 37UL863B uses LED edge lighting and as we have come to expect from displays that use this approach the backlight uniformity was very poor with clouding that was noticeable even in bright scenes.
The off-axis performance was also poor and what little dynamic range that there was disappeared as soon as you moved your head a few feet to the side.
Cons
Uneven backlight uniformity
Off-axis performance was poor
http://www.avforums.com/reviews/Pana...29/Review.html
Viewing angles, on the horizontal axis, are also very respectable with not too much contrast lost,
just the smallest amount of pooling to the corners, when sat flush on. Moving to the sides results in the opposite edge of the screen showing greater luminance
http://www.avforums.com/reviews/Phil...11/Review.html
there was a noticeable mura defect (a “stain” of light) at the top left of the LCD panel, visible on dark scenes.
There is also a moderate amount of viewing angle fall-off. The picture characteristics change quite noticeably when you aren’t viewing the screen face-on
http://www.avforums.com/reviews/Sony...18/Review.html
Where things started to go downhill slightly for the Sony was off axis viewing from the side of the panel.
http://www.avforums.com/reviews/Shar...34/Review.html
off-axis viewing also being poor. Contrast and colours fade quickly as soon as you start to move from the central viewing position.
There are also instances of backlight bleed and clouding.
http://www.avforums.com/reviews/Sony...88/Review.html
the screen uniformity with only slight instances of coning or light bleed being visible in low light viewing. Move off axis however and the SPVA panel reverts to the usual LCD trait of image washout over the 30 degree point.
http://www.avforums.com/reviews/Sams...27/Review.html
I was surprised at how uneven the LED edge backlight was when displaying a dark screen. There was definitely a noticeable cloudy effect present with brighter sides and especially corners, in fact backlight bleeding was so bad you could still see it on brighter images.
also suffered from the usual off-axis problems that plague all LCD displays that use VA panels
Scenes became washed out once you moved your head to one side or another (or up and down) and variations in brightness became more pronounced.
http://www.avforums.com/reviews/Sony...72/Review.html
results in some poor backlight uniformity that is noticeable in dark scenes.
It would seem that the uniformity of the backlight is something of a lottery with some being very poor and others being tolerable.
the off-axis performance is so bad that if you move your head even a couple of feet to the left or right the blacks turn purple and the contrast performance is destroyed.
http://www.avforums.com/reviews/Sony...81/Review.html
backlighting uniformity was not a major issue and what mild bleed that did occur, toward the bottom corners, didn't impinge on material unless viewed in very dark conditions
The shortcoming of off-axis contrast loss was in evidence but, once the initial drop had occurred - at around 30 degrees - things stabilised until reaching angles totally unsuitable for watching TV.
http://www.avforums.com/reviews/Sams...86/Review.html
There were issues off-axis with a loss of contrast and a blue tint to blacks but we've seen far worse
the backlight did show bleed from the bottom corners and some coning, bottom middle. There was also a fairly sizeable patch of clouding mid/bottom right of the screen
http://www.avforums.com/reviews/Sony...93/Review.html
The now familiar trait, for edge-lit LCD, of light bleed appearing in the corners opposing the side from which it's viewed was again in evidence but this only proved an annoyance in the darkest of images.
http://www.avforums.com/reviews/Sams...99/Review.html
At around 30 degrees off-centre, black becomes more blue and soon purple as the off-axis angle increases. Colours actually hold up pretty well, out of the sweet spot, but there's no doubt the D7000 offers a far better image on-axis than off.
Samsung's familiar problems with backlight uniformity were again present
If we could ask Samsung to resolve two things; number one would be to up the level of QC/improve transit measures to ensure panels with such uniformity issues don't go in to retail channels in quite the numbers they appear to, given the samples we've received for review here over the last 12 months.
http://www.avforums.com/reviews/LG-4...08/Review.html
Viewing angles on the vertical plane aren't generous
The LED technology certainly meant we could detect some haloing under motion, in darker scenes
http://www.avforums.com/reviews/Sams...05/Review.html
Cons
Very uneven backlight uniformity
Poor performance with off-axis viewing
http://www.avforums.com/reviews/Shar...09/Review.html
We have to also mention that off axis viewing is also restricted before we see a brightness and gamma shift as you get further off centre
As with most LED Edge lit TVs there is the on-going problem with edge bleed and sadly the Sharp doesn’t escape from having some issues with light spillage at the edges and some signs of light pooling in the centre of the screen
http://www.avforums.com/reviews/Tosh...23/Review.html
a flash lighting effect around people and objects in dark scenes
decent viewing angles (on the horizontal axis)
http://www.avforums.com/reviews/LG-L...27/Review.html
the blocks of LEDs result in ‘haloing’ which is very obvious when looking at images off-axis.
there was one problem, due to the close proximity of the LED array to the panel itself, under certain circumstances, you could see the array causing banding
http://www.avforums.com/reviews/Sony...28/Review.html
Moving even slightly off-axis diminished contrast performance
http://www.avforums.com/reviews/Tosh...32/Review.html
there was the almost inevitable pooling from the corners that occasionally intruded on our films.
That’s not to say the WL863 was halo free
http://www.avforums.com/reviews/Sony...31/Review.html
the only real area of weakness for the 40HX723 was its backlight uniformity which is hardly a surprise given that it uses edge LED lighting. The LED lights were clearly in the corners because on a dark screen you could see bright patches in each corner, resulting in a pin cushion effect. Uneven backlighting and patches of brightness are par for the course with TVs using LED edge lighting and are basically the price people pay for super slim displays.
there is some loss of contrast and colour accuracy when you move off-axis but this is true of any LCD TV and we have seen far worse.
http://www.avforums.com/reviews/Sony...51/Review.html
off-axis viewing quality is not of the same standard as when the viewer is sitting flush to the display. Both contrast and colour begin to wash out at around 45 degrees but, that said, we’ve seen worse
Another common drawback of the technology involved is poor uniformity as the diffuser struggles to produce even light distribution across the screen and although the KDL-55HX823 is by no means the worst offender we’ve had pass through the doors, there was evidence of light pooling and flashlighting – particularly in darker scenes – and inevitably this was mostly toward the corners of the panel.
http://www.avforums.com/reviews/Sony...71/Review.html
Off axis viewing is restricted like almost every other LCD on the market with luminance and images washing out very quickly as you move to the side of the screen. But even when looking directly at the set we have issues with uniformity of the image and backlight. With any dark material on screen it is easy to see clouding of the image in the darkest reaches of the picture, a fault that has hampered recent Sony LCD panels.
Cons
Restricted viewing angles
Backlight and screen uniformity issues
http://www.avforums.com/reviews/Tosh...68/Review.html
highly noticeable panel banding eats away the extremely respectable black level performance
thick vertical bands running across the screen and was particularly noticeable on solid patches of colour
http://www.avforums.com/reviews/Sony...61/Review.html
blacks are convincing enough, if a little blue tinged, although they do wash out from just a few degrees off axis
the poor uniformity that is almost ubiquitous with Sony's edge-lit LED TVs is improved by the ‘full array’ backlighting but it’s certainly not perfect. There are still instances of bleed from the corners and some light pooling
Cons
Screen uniformity is far from perfect
Diminished contrast off-axis
http://www.avforums.com/reviews/Sony...71/Review.html
all pluses in this area were totally undermined by the quite abysmal backlighting inconsistencies apparent in the the review sample of the KDL-HX803 sent to us
To add to the 'fun' of off-axis viewing, at approximatley 50 degrees off-centre, blacks turned deep purple.
Cons
Dismal Backlight Uniformity
Blacks Turn Purple - Off Axis
http://www.avforums.com/reviews/Sams...44/Review.html
only some slight issues with backlight clouding and uneven uniformity getting in the way. Plus like any LCD TV it also suffers from a loss of contrast and colour balance as you move off-axis, although interestingly this is not as bad on this model, as it is on the LED edge lit Samsungs.
http://www.avforums.com/reviews/LG-L...59/Review.html
off axis performance was very good for an LCD display which would lead me to believe that the 47LD950 uses an IPS panel and this would explain the rather mediocre black levels and poor dynamic range. Also despite using a CCFL backlight rather than LED edge lighting there was some clouding which is a shame, having said that it was still better than the terrible backlight uniformity that plagues edge lighting
http://www.avforums.com/reviews/LG-L...91/Review.html
Reasonable off axis performance for an LCD display
although there was some brightness at the edges the overall backlight uniformity was better than some other LED displays that we've seen recently
http://www.avforums.com/reviews/Pana...28/Review.html