Viewing distance is important as well. 50 screen at 10' is the same as 100 screen at 20'. Or a 20 screen at 4'. How fare do you sit from the screen?
Close, 9-10'. While your distance comparisons are certainly valid I don't think it's quite that cut and dry. The amount of detail that, say, a 20" screen is able to produce is less than that of a 40" screen, so while the size and distance ratio is exact, detail produced isn't. Sort of like looking at a 8x10 photograph, and then the same negative printed to 3x5. You can get as close as you want, but some of the detail seen in the 8x10 just isn't there in the 3x5.
On a large screen projector, mid-size RPTV or smaller direct-view set, it's not only the size differences but also the way in which a given smaller screen set handles details that are below its physical resolution capabilities.
What Ds does after that at the low settings is bring forth more subtle fine detail, textures, etc.. There's a point at which the compression ghosting starts to come forward, and I keep it right below that, which ends up between about 40 and 80. I don't look at edge detail so much as inner detail of objects
Is it not possible for you to attain this effect using DS sharpen before resize, but with much lower settings?
You know, I haven't tried this recently. Last time I did several weeks ago I was not able to get the same level of inner detail with Ds first. It was close but there was something about the edges of objects that got out of whack. I'll try it again over the next few viewings and see what it looks like. I also want to take a look at the latest WinDVD filters, as well as PowerDVD 2.55 filters (with ZP Pro, of course).
tbhavsar, I'm using ffdshow 030523 version and have found it to be quite stable.
robv47, the number position of the width control doesn't necessarily mean much, it's how wide the image is on your tube faces. If the image is already really close to the tube face edges it means your projector is mounted a little too close to the screen. But since you say it's ok until you use ffdshow, you can either increase the width with the width control, or in the adjustments in powerstrip. Different sources and processing will affect projected width by an inch or two, and movies vary that much by themselves. I usually just overscan by about that much and don't worry about it.
Also, you might find better performance on movies with your vertical at 72hz. Use 60hz only for all-video (no film used anywhere) presentations.