One of my biggest criticisms of last year’s Panasonic displays (except for the extremely expensive Z1, that is!) was the lacklustre quality of the TV’s scaling when the TV was fed with a 480i or 576i source. In other words, when the TV was fed a standard definition signal, the on-screen picture was somewhat blurry, because the TV wasn’t preserving all of the high frequency content in the signal.
This is now a thing of the past, as the scaling on the G20 is fantastic.
The smallest details of SD sources are preserved and are presented on-screen without blurring or ringing. The resulting clarity is
very close indeed to products using the high-end HQV scaling chip (seen in some AV receivers and premium Blu-ray Disc players)
Scaling (the actual “resizing”) of SD signals is just one part of making them watchable on HD flat panel displays, however. I also tested the Panasonic TX-P42G20’s diagonal interpolation and film mode detection capabilities.
First, diagonal interpolation, in other words, how well the TV suppresses jaggedness in standard def material. The TX-P42G20 did a good job, consistent with other displays in this price range (and above). For those of you familiar with the “three rotating bars” test pattern on the HQV test disc, the top two moving bars were smooth except for some jaggedness at their edges, and the bottom line was fairly smooth, indicating good performance.
As with last year’s Panasonic Plasmas,
film mode detection is non-existent on the TX-P42G20. This means that all film content (regardless of whether it's been transferred to European-centric PAL or American-centric NTSC format) is processed by the TV in the same way as Video camera material, which produces small flickering in finely detailed areas. As with last year’s models, although this is slightly irritating, it’s important to put it in context. The TV’s own Film Mode detection is only relevant when you are feeding an interlaced standard-def signal into the TV (such as from an SD satellite or cable box, or from the TV’s own built-in Freeview or Freesat tuners). If you are using an upconverting DVD player, the TV’s film mode detection is bypassed and the resulting picture quality depends on the film mode detection capabilities of the player.
نوشته شده توسط 2.5.8.14.1.13
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