LE40786 (LE40789): Das Problem mit den Kammartefakten.

Hallo zusammen,

nachdem ich im Kuafberatungs-Forum keine Antwort erhalten habe, versuche ich es noch mal hier...

Ich denke über die Anschaffung eines LCD-Fernsehers im 40-42-Zoll-Format nach und habe den Samsung LE40786/789 in die engere Wahl aufgenommen. Im Netz findet man nicht viele Testberichte zu diesem Gerät, einen recht ausführlichen und kompetent wirkenden gibt es aber unter

http://www.hdtvtest....view-20080922131.htm

Was mich sehr irritiert, ist die Aussage, dass das Gerät auch bei nahezu allen Quellen (auch progressiven!) Kammartefakte produzieren soll. Ich habe einige Stellen des Testberichtes unten zitiert und das Wichtigste fett hervorgehoben. Vielleicht können Besitzer des Gerätes dazu Stellung nehmen, ob sie dieses Problem in der Praxis beobachten konnten?


Aus dem Testbericht von www.hdtvtest.co.uk:


Video Processing is probably the section where we should note an unusual problem with the Samsung LE40A786. Irritatingly, with any source except a 60hz input, combing would appear every so often, even with a fully Progressive source. We can only assume that this display routes these signals through a 1080i video processing circuit, which is unusual. Keep in mind that as the combing is at 1080i resolution, the misplaced lines are only one pixel high and may be unnoticeable at certain viewing distances. Nevertheless, the issue is here and is especially significant in the UK, where there is an abundance of affected 50hz video content.

Sadly, the combing issue mentioned in the Video Processing section extends to 1080p/24 input. However, it would appear that, when fed 1080p/60, the TV can still recreate a proper, judder-free 24p signal. This is a very unusual situation.

Anmerkung: Ich verstehe diese Aussagen nicht ganz. Erst heißt es " especially significant in the UK, where there is an abundance of affected 50hz video content", dann jedoch auch, dass eigentlich alle Quellen, auch ein 1080p/24-Signal betroffen sind (siehe auch Punkt unter "Conclusions/Cons").


Conclusion

Cons
- Combing/interlacing issue on virtually all types of input signal, even 1080p


Summary

The Samsung LE40A786 is an interesting display, not only because it features the still-elusive LED backlighting system, but also because it features some strange issues which we very rarely encounter on HDTV displays.

Certainly, the high contrast ratio afforded by this type of display is a killer feature. Going back to conventional LCD was incredibly difficult after watching the Samsung LE40A786. The fact that Samsung have added their usual comprehensive array of picture configuration and calibration options only sweetens the deal. Sadly, the aforementioned combing issue will irk hardcore videophiles, and the alarmingly high level of input lag may be a deal-breaker for video gamers. We can only assume that both of these issues – which do not appear on Samsung’s conventional LCD displays – are necessary evils included to support the LED backlighting. Users who desperately want an LCD with such a high contrast ratio would do well to give the LE40A786 a good look over; but the rest of us might want to wait until Samsung has worked out some of the quirks with its LED-based displays.



Ich wäre über Meinungen von Leuten, die das Gerät kennen sehr dankbar.

Viele Grüße,

Andreas