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• #7111 Joshi titán

  Új Válasz 2017-11-17 19:21:01 #7111

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  Joshi

  titán

  Minden nap tesztelgetem a Sony A1-et, és ma kipróbáltam a BFI-nek mondott valamit. Nem tudom mi a gond, de annyira vibrál a kép hogy élvezhetetlen. Van amikor néhány pillanatra abbahagyja, de aztán ismét vibrál a kép. A fényerővel nem játszottam. A HDTVTest oldal alapján próbáltam.

  "More exciting is black frame insertion (BFI) which can be activated by setting [Clearness] to “High” under the [Motionflow] “Custom” submenu. By inserting black frames between the original video frames, BFI refreshes our retinal persistence and reduces motion blur without introducing interpolation artefacts and soap opera effect, but there are at least two well-documented downsides due to how BFI works.

  The first is drop in light output, which we don’t think is a problem on the Bravia 65A1. With [Brightness] and [Contrast] set to “Max” and [X-tended Dynamic Range] to “High“, peak white on a 10% windowed pattern measured 185 cd/m2 with BFI enabled, which is eminently usable in all but the brightest rooms. Lowering [X-tended Dynamic Range] to “Medium” still generated 125 cd/m2 which is more than sufficient for watching in a very dim environment.

  Owners are more likely to be put off by the Sony A1′s BFI because of flicker – at least that’s what we initially thought when we put up a 24fps full-field white raster which came across extremely flickery. However, sending a 60fps video signal to the display reduced the flicker. To our eyes the 60Hz flicker wasn’t bothersome at all, but sensitivity threshold does vary from one individual to another. Unfortunately the flicker became more noticeable with the 50Hz sports broadcast prevalent this side of the pond in the United Kingdom and Europe… you lucky Yanks."

  

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