Originally Posted by Disto
OK, this is the kind of discussion I want to get into. Help me understand. You said, "They're controls that are set at default. And at the factory set defaults, the picture will retain 1:1." How do you know this? Using the default values, when I look at an overscan test pattern, I seem to see more overscan than the 2 1/2% or so hidden behind the bezel.
It's kinda interesting, actually. I used to wonder myself whether or not this set featured 1:1. I was even a little skeptical. But I spent quite a while doing some research on the subject, all of which seemingly confirmed the conclusion that the set had pixel-for-pixel mapping. Ultimately, however, I was lucky enough to chat with a Sony engineer I met at this past year's CES in Vegas. A really cool guy, actually, and he made me privy to some interesting inside information which I won't get into here. However, when querried, he confirmed that the A2000 series was indeed a 1:1 set. Now, if everyone
is wrong about this, then there are an awful lot of misinformed people walking around (including many professionals). And frankly, I think that's rather unlikely. In any event, it was conveyed to me by the engineer that the so-called overscan as we see it was indeed the byproduct of the SXRD technology whereby a small portion of the display area is covered by the bezel. When pressed further about the inclusion of technician-adjustable service menu items relating to overscan, I was told that the ability to adjust was (among other things) for the purposes of convenience and choice and that, moreover, the picture would retain it's 1:1 mapping if left at default. Further, it was explained to me that part of the reason the bezel covers the screen was to try to avoid video noise and other anomalies that can appear at the edges of some source material (like HD broadcast transmissions, for instance) on 1:1 displays. This I can definitely vouch for because when I adjusted for close to zero overscan, several OTA HD transmissions in my area (Los Angeles) revealed all sorts of garbage at the top and bottom of the screen. (DVDs were free of such garbage, but the loss in detail instead was pretty evident.) Said garbage was particularly evident during HD broadcasts that included SD source material in the transmission (e.g., when an HD newscast displayed 4:3 archive footage).
As for your set having more than 2 1/2% overscan, can't say I know what to tell you there. You may have an alignment issue of some sort. For when using the DVE (both the SD and HD versions) and other reference discs, I show 2% overscan at the top and bottom and 2.5% overscan at the sides of my set. (I also happen to know that many others have reported the same figures for their own sets.) What's more, I confirmed these findings with four different HDMI-equipped SD and HD optical disc players. So I'm reasonably comfortable in my belief that none of the DVD players I've used are somehow manipulating the program material. Additionally, I have the exact same overscan percentages with the component inputs as well. However, I should also disclose that these measurements were taken only with 1080i (HDMI/component) and 1080p (HDMI only) inputs. I do not play traditional SD material on my A2000, choosing instead to use a separate SD LCD TV for that purpose. (Saves on excess lamp usage as well.) Therefore, I can't verify any figures for 480i/480p inputs.