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In Reply to: Re: is component always better than S-video? posted by Jonmarsh on November 27, 2000 at 08:38:14:
Hi Jon, would a front projector (Sharp) that does 500 lines of resolution benifit from component ?
Follow Ups:
If the Sharp has a component input, I'd give that a serious evaluation. As an example, on a Sony 400Q that's setup properly, IMO there's a significant advantage to the component input over the S-Video. Important to note, the Sony is 16X9, and doesn't require the CD player to do down conversion for anamorphic DVD's. If your projector requires down converted sources (say, 640X480 equivalent) for widescreen, you'll lose some of the benefit with that kind of material; however, you'll probably still notice it if you use 4:3 source material.
It's important to check the setup using a good test disk, such as AVIA; it's not uncommon the S-Video is "spot on" out of the box, and component may be low, or darker. Also, many early RPTV's had component color matrix decoding that was decidely inaccurate; hence, the problems with some Toshiba's having a green or yellow cast. Try it and see; doesn't cost you anything except time and cables, if you've got the connections already.
...the Sharp projector I have is only capable of 4:3, and yes - it has component in. So I do plan on purchasing a component cable which will need to be about 12-14' feet in length (I hope the distance isn't a factor). The player is a Pioneer Elite DV-05, and it has the component out - otherwise I'd be 'stuck' with s-video ! :-)
You bring up another point of interest, you say component tends to be darker than s-video. This may be an additional plus for me since I prefer heavy contrast, and deep blacks (I always have the DV-05 in the 'dark' video mode). Hopefully I'll see a noticeable difference.
Lastly, is the general rule of thumb that the benifits of component are usually only visable on 36" tv's or bigger ?
That rule of thumb relates to the comments I made about it being more obvious with front projection; BUT, what's reall at issue is the "resolving power" of the display, and how close you sit, and your visual acuity. For example, my bedroom system is not a conventional TV, but an NEC XM29Plus presentation monitor, 29" diagonal, with a phosphor strip pitch 1/2 the size of a TV set that size, and capable of scanning to 1280X1024. DVD is stored in component mode, and obviously the RGB output from my HTPC reproduces all the color bandwidth available from the signal. As a giggle, and to make my point with a friend, we played two copies of "Fifth Element", one on my Toshiba SD6100 DVD player (from daughter's room) on S-Video into the NEC (it also has conventional video inputs, besides several RGB inputs), and the other from the HTPC. To avoide down conversion, the NEC has vertical height control even via the remote, so we set the DVD player to 16X9 mode, and setup the HTPC to mimic it for playback resolution, though I normally scale up to higher res. Well, there's no comparison in fine picture detail reproduction, particuarly things like skin texture, clothing texture, masonery, etc. S-Video, even on a 29" monitor, looks smeared and cartoonish (i.e., like video) in comparison to high grade reproduction of the component source- which literally, looks more like film. The thing is, a lot of early sets DID have problems with the component matrix color decoding, whereas S-Video was an established, mature technology. So, it's like anything else in this wacky hobby- make sure everything is set up accurately as possible on a techical basis before drawing conclusions.
Another example of that problem is comparing RPTV's to direct view; a "classic" judgement by many is that RPTV's don't have as sharp a pictuire, ergo not as high a resolution. Well, if you compare an RPTV fresh out of the box, not converged, this may be close to the case. Misconvergence by one scanning line width kills half the video bandwidth. BUT, RPTV's are not limited by the shadow mask/phosphor strip size, which is a problem for direct view sets, and why even the Sony HDTV direct views really can only resolve about 800 lines- less than a Sony 400Q projector. Many direct larg screen direct view sets have phosphor strip pitches of 1mm; 3 mm for RGB, so res per horizontal inch is under 10 lines. A properly setup RPTV is limited either by video bandwith, or in some cases, by the lenticular screen design; but the screen passes all colors in each pitch. Thoughts to ponder....Regards,
Jon
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