Originally Posted by bialio
So define "better"
I'll take 812 scaled up to 1080 over 812 scaled down to 720 any day.
I know a lot depends on the scaler, but also alot depends on how you feel about vertical vs horizontal resolution. The 720P image should be more acurate vertically, since it didn't have to add data on that plane.
I disagree, you're scaling both ways. If you're really
a purist, you'll "lose" something either way, but if you've got two options to represent 812 lines, either 720 lines or 1080 lines, only one can fully resolve 812 lines, and that's the 1080 option. Of course that totally ignores the idea/observation that upscaling generally improves image quality.
ANd the 1080 should be more accurate horizontally, since it preserves the full source width.
Yup, you sacrifice resolution in both directions to scale to 720p, you don't sacrifice any to scale to 1080p.
I've always been told Vertical was more important. Isn't the definition of HD ">= 720 lines of vertical resolution"?
I believe that's the generally accepted definition.
I think bottom line is both setups probably look spectacular.
I think I agree in principal.
IF there was a scaler that actually cropped the black bars and then squeezed the 1920x812 image into an anamorphic 720p frame - that might be best of all. But that seems unlikely in a CE product. Just way too specialized......
Seems to me any scaler can do the requisite vertical stretch and output @ 720p. And no, there's no way (all else equal, scaler, PJ), that 720p is better than 1080p at reproducing a 1920x812 image.
The only time there's even a question of what's better, is if you're talking a CIH (w/lens) 720p setup vs a no-lens 1080p setup. Even then, the 1080p projector has the advantage in resolution, but given my personal dislike for "ghetto" CIH (not that there's anything wrong with it, it's just not for me), I might go with the 720p setup for the more "correct" system.
For the record, I have a 720p PJ w/lens, but I've got no illusions that it's better than a 1080p setup. Just that because I have a lens, my setup is better than most 720p setups (non CIH) when it comes to scope HD.