還有LE8500 其實這是 2010 LG IOP LED的通病 那幾個都是去年第二季開始LG主打的 IOP LED TV機型 他家最高端真正直下式 LED的 LH95就沒有這個問題 LH95台灣沒進,LG也因為成本問題今後只主打 IOP面板的機型 一些主要的國外 TV 評測網站的評測都早有警語 只不過不知道為什麼他們都還是給LG 這些 IOP機型極高的評價 沒錯規格,畫質,對比,黑階等表現都確實不錯 只是這個 banding的問題 視力/辨色力正常的人其實應該很容易發現 看看一些論壇上或那些評測網站的真正 user reviews 只要看得出banding的基本上都給很低的評分 以個人過去看過有這種 banding問題電視的經驗 個人認為是產品的重大品質問題 不要說是像LG這些中高端的機器 就是入門級陽春機這種問題個人也無法接受 總之這一類的問題事先還是要做足功課免得買了後悔
看看一些評測網站的警語: FLATPANELSHD LG LX9500 review: “we also experienced two issues; halos and horizontal banding form the local dimming system.
The last problem was due to the IOP construction. Because of the very slim LED backlight some of light from the LED in the different local dimming zones have to be distributed with a light diffuser. This introduced some horizontal banding in some pictures.” 這裡它對IOP為什麼會有horizontal banding的解釋是說,因為IOP的結構為了提供超薄機身類似直下式local dimming的效果,部份local dimming區域是由light diffuser(背光擴散片)導光的,這樣就會造成某些情況會有horizontal banding。 (看其他論壇的討論,基本上有比較大面積的漸進色階的畫面如藍天,膚色最容易出現)
cnet Reviews LG Infinia 47LE8500 http://reviews.cnet.com/flat-panel-tvs/lg-infinia-47le8500/4505-6482_7-33957045.html?tag=contentMain;contentBody#reviewPage1 “Unfortunately the 8500's picture has a flaw, absent on other local dimming displays, that will be difficult for some viewers to overlook: uneven uniformity across the screen. ”
FLATPANELSHD LG LE8500 review: "because of the local dimming in zones and the very slim profile, LE8500 sometimes have some horizontal bands (going across the screen and following the LED strips from the backlight) and variations in light homogeneity. For example if you see a sky changing from blue to light blue you might experience a horizontal band.
It's not always visible but when you start noticing it you might notice it more often. It enhances from angles but is also visible sitting in front of the TV."
同一篇對 IOP的解釋(圖片左邊是IOP): “LE8500 is actually a backlit LED model but LG has still managed to keep it very slim at just 2.5 cm. How? By using a so-called integrated optical plate that utilizes a concept of light diffusers. This way LG has been able to incorporate a slim LED backlight and allow local dimming at the same time (traditionally this has been either or).”