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Do digitals display a flat image?
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stgdz



Joined: 07 Dec 2008
Posts: 107


Posted: Wed Mar 11, 2009 1:17 pm    Post subject: Do digitals display a flat image?

I personally don't have much experience with digital projectos, the only experience I have is an old DLP that our office uses. With that being said I have looked at the RS20 reviews on the web and looked at screen shots but I haven't seen on in person.

With that being said I was reading over the RS20 review at HTguide, http://htguide.com/forum/showthread.php4?t=32672 ,and I looked at one of the screenshots and for some reason it didn't have that same depth look that I get with my crt.

This is the screenshot I first noticed it in
http://www.projectorreviews.com/images-projectors-q1-09/JVC_DLA-RS20_DarkKnight_joker_large.jpg
and the thing that sticks out of me is that his face and the jacket appear flat to me and they are almost on the same plane.

I looked at some others
http://www.projectorreviews.com/images-projectors-q1-09/JVC_DLA-RS20_indianajones_waterfall_large.jpg this one it doesn't appear that the the water in the back is behind the falls but it appears at the same plane.

This sport shot also looks like the top and bottom of the field are level http://www.projectorreviews.com/images-projectors-q1-09/JVC_DLA-RS20_hdtv_football4_large.jpg

I am viewing this through an lcd monitor and it may be different in person but am I missing something with the images? They look tack sharp but don't really have depth to me. I first noticed the depth(3d) that people talk about with CRT's in black and white videos and now I am starting to notice it more and more with color.
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perisoft



Joined: 29 Aug 2007
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Location: Ithaca, NY

Posted: Wed Mar 11, 2009 3:08 pm    Post subject:

How the hell do you expect to tell that a digital projector is 'flat' when you're looking at the image it projected after it's been sucked into a digital camera, compressed, transmitted, and displayed on an LCD screen?

You might as well try to judge whether CDs are better than LPs by listening to a recording that was MP3 compressed to 96kbits and played back on a boom box.

A good screenshot of a digital projector projected in the right environment will be nigh-on *identical* to the raw source material in the bluray disc. Pretensions to "oh, this jacket is 3D on this screenshot and not in the other" are pretty close to delusional.

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emdawgz1



Joined: 14 Mar 2006
Posts: 7949


Posted: Wed Mar 11, 2009 3:19 pm    Post subject:

Buying a digital pj is a minefield. Most mid-fi shops either..

a. Dont have a pj setup.
b. have one setup, but it doesnt have hd sources
c have one setup but its sharing sources w/ 15 other displays so god only knows what signal its getting.
d have it setup but they only show "The Simpsons" hd so you have no idea what it looks like w/ other material.


What are you gonna do??? Confused

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ecrabb
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Joined: 13 Mar 2006
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TV/Projector: JVC RS40, Epson 5010

Posted: Wed Mar 11, 2009 3:24 pm    Post subject:

Go to a home theater meet, John! I'm sure there are some AVS guys that have meets several times a year within a short drive of your home - probably even more often than that given how close you are to a bunch of big cities out there!

Yes, stores usually suck. Very few have anything close to a setup that any of us would want. One local dealer here has a very expensive setup with a Stewart scope screen, anamorphic lens, and a very expensive DLP projector... Probably a $50,000 setup... And I literally wouldn't trade my $1000 setup for it.

Perisoft is exactly right. You simply can NOT judge the relative merits of one projector over another looking at screen shots. It's directly comparable to comparing speakers and room sound by listening to an mp3 from a web site - and nobody would be silly enough to do that. Screenshots are for entertainment purposes. Period.

The RS20 and even the RS2 do an excellent black (though not pure black), and they do it without crushing the low-IRE portion of the signal - something which you can NOT do with your CRT adjusted to do true black - not even with low-level gamma boost. Compared to a high-end 9" machine, focus and sharpness is as good or better CRT projectors, and compared to all CRT projectors, ANSI (in-scene) contrast is superior, uniformity is superior, brightness is superior, and of course the machine is smaller and quieter. The RS20 isn't even far off in the "film-like" department, as you have to be well inside 1x screen width to see pixels, and that's on a bright scene.

Other issues aside (issues true of any new electronics), digital has pretty much arrived in terms of picture quality. Do yourself a favor and go to an home theater meet and take a look at somebody's well set-up (calibrated) digital - preferably on a scope screen. Don't be surprised if you walk away thinking CRT ain't "all that" any more.

SC
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AnalogRocks
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Posted: Wed Mar 11, 2009 3:31 pm    Post subject:

ecrabb wrote:


The RS20 and even the RS2 do an excellent black (though not pure black), and they do it without crushing the low-IRE portion of the signal - something which you can NOT do with your CRT adjusted to do true black - not even with low-level gamma boost.

SC


Just wondering, what do you base this on?

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perisoft



Joined: 29 Aug 2007
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Posted: Wed Mar 11, 2009 3:42 pm    Post subject:

AnalogRocks wrote:
ecrabb wrote:


The RS20 and even the RS2 do an excellent black (though not pure black), and they do it without crushing the low-IRE portion of the signal - something which you can NOT do with your CRT adjusted to do true black - not even with low-level gamma boost.

SC


Just wondering, what do you base this on?


I'm curious too. While I don't have calibration ability to get things dead-on, I can easily have pure black and bump gamma so I can differentiate 1 IRE from black. The way I have things set up now, I can see right down to the bottom (though I have it set around 7IRE) but blacks are so black that light from the power LEDs in the equipment closet, reflected off of black cloth and around into the room, lights up the screen!

That's with an HTPC though - are you (ecrabb) referring to a limitation with existing stand-alone stuff?

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emdawgz1



Joined: 14 Mar 2006
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Posted: Wed Mar 11, 2009 3:43 pm    Post subject:

ecrabb wrote:
Go to a home theater meet, John! I'm sure there are some AVS guys that have meets several times a year within a short drive of your home - probably even more often than that given how close you are to a bunch of big cities out there!

Yes, stores usually suck. Very few have anything close to a setup that any of us would want. One local dealer here has a very expensive setup with a Stewart scope screen, anamorphic lens, and a very expensive DLP projector... Probably a $50,000 setup... And I literally wouldn't trade my $1000 setup for it.

Perisoft is exactly right. You simply can NOT judge the relative merits of one projector over another looking at screen shots. It's directly comparable to comparing speakers and room sound by listening to an mp3 from a web site - and nobody would be silly enough to do that. Screenshots are for entertainment purposes. Period.

The RS20 and even the RS2 do an excellent black (though not pure black), and they do it without crushing the low-IRE portion of the signal - something which you can NOT do with your CRT adjusted to do true black - not even with low-level gamma boost. Compared to a high-end 9" machine, focus and sharpness is as good or better CRT projectors, and compared to all CRT projectors, ANSI (in-scene) contrast is superior, uniformity is superior, brightness is superior, and of course the machine is smaller and quieter. The RS20 isn't even far off in the "film-like" department, as you have to be well inside 1x screen width to see pixels, and that's on a bright scene.

Other issues aside (issues true of any new electronics), digital has pretty much arrived in terms of picture quality. Do yourself a favor and go to an home theater meet and take a look at somebody's well set-up (calibrated) digital - preferably on a scope screen. Don't be surprised if you walk away thinking CRT ain't "all that" any more.

SC


I dont really have any truck w/ folks on the "A" site. Wink

I have seen some Digi's setup really well, and i could EASILY see having one. But, the cost, bulb issue, and motion artifacts, keep me from thinking its an ultimate solution.

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ecrabb
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TV/Projector: JVC RS40, Epson 5010

Posted: Wed Mar 11, 2009 3:46 pm    Post subject:

It's based on fact, Jeremy. You simply can't adjust the projector's G2 low enough to get a perfect 0 IRE black, then still have a perfectly linear response from 1-10 IRE. You just can't come out of black fast enough and still stay linear. So, you have to compromise. Don't get me wrong - with low level gamma boost you can get close, but it's still not perfect.

SC
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perisoft



Joined: 29 Aug 2007
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Posted: Wed Mar 11, 2009 3:52 pm    Post subject:

ecrabb wrote:
It's based on fact, Jeremy. You simply can't adjust the projector's G2 low enough to get a perfect 0 IRE black, then still have a perfectly linear response from 1-10 IRE. You just can't come out of black fast enough and still stay linear. So, you have to compromise. Don't get me wrong - with low level gamma boost you can get close, but it's still not perfect.

SC


Interesting. Presumably with detailed enough gamma (different setting for each R/G/B at 1, 2, 3, 4, 5, 6...IRE) you could do it. Whether it's at all WORTH it is another question. Smile

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ecrabb
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Posted: Wed Mar 11, 2009 3:55 pm    Post subject:

emdawgz1 wrote:
I have seen some Digi's setup really well, and i could EASILY see having one. But, the cost, bulb issue, and motion artifacts, keep me from thinking its an ultimate solution.

I guess the bulb issue isn't that much of an issue for me. Even if I put 500 hours on per year, a bulb will last me at least a couple of years before it needs to be replaced. Even if its $300, that's not bad at all every couple of years.

Cost is certainly an issue, although I think that's going to go away soon, too. 8" EM/LC machines are really the sweet spot right now at a grand or two. But, probably with the year, used RS2's will start hitting the market at a comparable price point. When I got into CRT, it was a no-brainer. Bang-for-the buck and picture quality - especially at prices affordable by a mere mortal like myself - was far superior with CRT. That paradigm has really started to shift.

You guys are going to call me a heretic, but if I had the chance to buy an RS2 for $2000 or a G90 for $2000, I'm not sure I'd go with the G90 anymore. I mean, with the digital you get superior performance in every way, save for two areas (absolute black and motion), and you get it in a smaller, lighter, quieter package. Quiet is a big deal to me, because I love the audio part of HT just as much as the image on the screen. Some people's priorities are different, though - and that's OK.

SC
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ecrabb
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Posted: Wed Mar 11, 2009 3:57 pm    Post subject:

perisoft wrote:
Interesting. Presumably with detailed enough gamma (different setting for each R/G/B at 1, 2, 3, 4, 5, 6...IRE) you could do it. Whether it's at all WORTH it is another question. Smile

True. We're splitting hairs. My initial point was that it is simply one thing that a digital handles with aplomb, but is very difficult to do with a CRT.

SC
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AnalogRocks
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Posted: Wed Mar 11, 2009 4:21 pm    Post subject:

stgdz wrote:
Do digitals display a flat image?


Not on a curved screen Laughing

I've seen a couple of digital projectors and I'm underwhelmed. I saw the Mitsubishi HC5000, the picture looked dull, it was pixelated and everyone needed some clearsil to wash their faces with, and the trees, sky, cars, grass etc... Plus everyone had a clayface.

Go see some digital projectors for yourself. They may look OK to you. I wouldn't spend any money on one.

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ecrabb
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Posted: Wed Mar 11, 2009 4:31 pm    Post subject:

I know what you're talking about, Jeremy. 3 years ago, I HATED skin on practically all DLP and LCD projectors at any price. Literally green pixels where there was clearly no green to be seen. Wouldn't have paid a dollar for most of those machines. The HC5000 is an entry level budget 1080p machine that sacrifices image quality to come at that price point with 1080p. A machine like that would indeed be a downgrade in most ways for most of us here. But, using that as example is like saying CRT sucks because you saw DVD on an ECP one time.

Have you ever seen a calibrated LCoS or SXRD machine? How about on a scope screen through an anamorph lens? I'll tell you - it's a site to behold.

SC
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AnalogRocks
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Posted: Wed Mar 11, 2009 4:53 pm    Post subject:

ecrabb wrote:
I know what you're talking about, Jeremy. 3 years ago, I HATED skin on practically all DLP and LCD projectors at any price. Literally green pixels where there was clearly no green to be seen. Wouldn't have paid a dollar for most of those machines. The HC5000 is an entry level budget 1080p machine that sacrifices image quality to come at that price point with 1080p. A machine like that would indeed be a downgrade in most ways for most of us here. But, using that as example is like saying CRT sucks because you saw DVD on an ECP one time.

Have you ever seen a calibrated LCoS or SXRD machine? How about on a scope screen through an anamorph lens? I'll tell you - it's a site to behold.

SC


I'll freely admit I haven't seen it. That's why I said he should see one for himself.

I haven't seen an LCos or SXRD machine in a proper set up. One the CRT's disappeared from stores I lost my interest of going there. It's probably because I'm analog. I stoped going to Hi-Fi shops when they stoped spinning vinyl too. I did hear a few of the mega dollar CD transports made of 60lbs of machines plexiglass and granite and some stand alone D/A converters but...it's jut not vinyl. The sound quality wasn't there. Even at $250 000 ( transport and D/A converter )

Digital just doesn't hold much interest for me at all.

So that being prefaced, if I did go to see a digital whizz bang projector with an anamorphic lens, it may have astounding picturer quality, I would still come home to my CRT's. I'm just hard wired that way.

I'm analog and I approve this message.

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ecrabb
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Posted: Wed Mar 11, 2009 4:57 pm    Post subject:

Shouldn't you really be eschewing DVD's and even BD's then in favor of the more analog Laserdisc, VHS and S-VHS?

Wink

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AnalogRocks
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Posted: Wed Mar 11, 2009 5:01 pm    Post subject:

ecrabb wrote:
Shouldn't you really be eschewing DVD's and even BD's then in favor of the more analog Laserdisc, VHS and S-VHS?

Wink

SC


I know it's stange isn't it? Maybe I need a name change to HybridRocks?

It just doens't have the ring to it.

Honestly though if HI-Band 1025i had ever taken off here I bet I would have had stacks of W-VHS and HB LD's. As I see it, NorthAmerica got shafted on hihg def. Japan got it in 1989! We could have had it too.

Lets say that I don't mind some sources being digital but I need the final display to be analog to make my eyes happy.

...and after all aren't we all just looking for a happy ending?

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perisoft



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Posted: Wed Mar 11, 2009 5:29 pm    Post subject:

AnalogRocks wrote:
NorthAmerica got shafted on hihg def. Japan got it in 1989!

...aren't we all just looking for a happy ending?


I think that's about all you would have gotten on hidef in Japan in 1989... Wink


I've actually got a busted HC5000 on my desk next to me (before the snarky comments start, it lived in a motion platform its whole life, not quite the same as being in an HT, so I'll give it a pass) that I'm looking for a mainboard for. Considering trying to use it for gaming/etc in the HT, if I can convince my CFO to give it to me to fix. Smile But... I was horribly unimpressed with black level. With the iris all the way closed I could hold my hand in front of it and cast a shadow in office lighting.

It does kinda bother me that people do these 'shootouts' where they rip a digital out of the box, plunk it down, turn it on, and pronounce the colors crap as compared to a CRT they spent 1000+ hours setting up. No sh*t! Imagine that a G90 came preconverged and focused, and consider the default colors you get out of it just setting it at 6500k. I seem to recall a nicely-terrible screenshot that kal put in the color calibration thread... Smile

If I ever fix this HC5000 and put it in my HT, I'll probably try to put some serious time into doing a reasonable calibration (to the extent I can without a colorimeter... Sad ), just to see how things look when you throw a few hours at a (relatively) lousy digital.

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emdawgz1



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Posted: Wed Mar 11, 2009 6:08 pm    Post subject:

ecrabb wrote:


Have you ever seen a calibrated LCoS or SXRD machine? How about on a scope screen through an anamorph lens? I'll tell you - it's a site to behold.

SC


I have to agree, There's a local shop that has the Sony VW200 with an anamorphic lens on a 10 ft electric masked screen. He had Kill Bill 1 in hd on the DVR.... Very VERY NICE.

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kal
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Posted: Wed Mar 11, 2009 7:11 pm    Post subject:

perisoft wrote:
You might as well try to judge whether CDs are better than LPs by listening to a recording that was MP3 compressed to 96kbits and played back on a boom box.


ecrabb wrote:
Perisoft is exactly right. You simply can NOT judge the relative merits of one projector over another looking at screen shots. It's directly comparable to comparing speakers and room sound by listening to an mp3 from a web site - and nobody would be silly enough to do that. Screenshots are for entertainment purposes. Period.


You guys bring a tear to my eye... my work here is done. Smile

Kal

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WanMan



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Posted: Thu Mar 12, 2009 10:07 am    Post subject:

perisoft wrote:
How the hell do you expect to tell that a digital projector is 'flat' when you're looking at the image it projected after it's been sucked into a digital camera, compressed, transmitted, and displayed on an LCD screen?

You might as well try to judge whether CDs are better than LPs by listening to a recording that was MP3 compressed to 96kbits and played back on a boom box.

A good screenshot of a digital projector projected in the right environment will be nigh-on *identical* to the raw source material in the bluray disc. Pretensions to "oh, this jacket is 3D on this screenshot and not in the other" are pretty close to delusional.
Image depth through the performance of contrast is not abnormal of a construct. You actually cannot accept this?
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