For the sake of this discussion, let's assume that the calibrated HD70 has the same overall PQ as the SP4805 and the only difference is 720p versus 480p
Originally Posted by Adi
A properly calibrated HD70 with a decent upscaling DVD-P like Oppo
SP4805 with pixel mapped D1
Assuming an "AVS standard D1 setup" (1:1 pixel-mapped 854x480@48/72Hz over DVI/HDMI)
, the PQ of the HD70 will not be as good as the PQ of the SP4805. The very simple reason is that
- the HD70 image is not 1:1 and has to be upscaled; and
- the HD70 does not support 48/72Hz frame-lock and will suffer from the inevitable 3:2 pulldown motion artifacts.
2. Broadcast HD material at 1080i/720p
A properly calibrated HD70
The HD70 will have the superior PQ over the SP4805 for HDTV, HD-DVD and XBOX (720p) at viewing distances of less that 2x screen width. At greater distances, it becomes a wash.Note
: A D1 pixel-mapped to the HD70 at 1280x720@60Hz will be at least as good, if not better, than an Oppo at 720p, even if 2:2/3:3 is not available.
As a happy 4805/D1 owner, I am open to a 720p budget projector as long as its CR and color accuracy are comparable to that of 4805.
This is precisely the issue that I have been trying to determine vis a vis the HD70! Unfortunately, it seems that will not be the case (pending formal results from Kras).
Two biggest issues for me with 4805 are, large pixels on 105" screen which are occationally visible from 16.5 feet (when I am wearing the glasses) and loss of detail on HD material.
This is strictly a seating distance issue. You are sitting just at 2x screen width which is the minimum recommended. If the SDE is bothersome to you, it's a judgment call: reduced PQ on std def DVDs versus improved PQ on HD, etc. If your viewing distance was greater, it would be less and less of an issue to the point that the screen resolution becomes irrelevant. But sitting at the minimum 2x or less, the 720p certainly will reduce SDE.
Now, for the sake of discussion, let's assume that the calibrated HD70 does not have the same overall PQ as the SP4805
: For the conditions you outlined, an SP4805 owner will not likely be happy with the HD70 although newbies and less critical users may be thrilled.
Lastly, for the sake of discussion, let's assume that the calibrated HD70 is superior to the SP4805 in overall PQ
: it becomes a no-brainer to select the HD70 unless
you are a serious std def DVD collector. In that instance, you will have to evaluate the loss of 1:1 pixel-mapping and 2:2/3:3 operation against better colours/contrast, etc.
* Frame-lock statements based on information provided to date!