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| Which digital projector would U get if God banished CRTs? |
| LCoS (Sony or JVC) |
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65% |
[ 43 ] |
| LCD |
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4% |
[ 3 ] |
| DLP |
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13% |
[ 9 ] |
| Other |
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16% |
[ 11 ] |
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| Total Votes : 66 |
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Message |
Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Tue Jul 28, 2009 2:30 pm Post subject: |
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| WanMan wrote: | | And while I have not kept up with DLP in its evolution in the past couple of years, I remember that DLP tripods were prohibitively expensive and raise the BL floor. |
They still are expensive unfortunately. And yes, they have still not got the on/off thing as down as JVC has. But, as is always the case, it is trade offs--you have to pick your poison. No technology yet exists that does everything well.
_________________
Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
Last edited by Person99 on Tue Jul 28, 2009 2:59 pm; edited 1 time in total
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Tue Jul 28, 2009 2:34 pm Post subject: |
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| VideoGrabber wrote: | | Ah, try _9.6x_ the normal 5x wheels. (There are no wheels... they pulse the PhlatLight LEDs in sync with the DMDs.) If you're still seeing rainbows with the light sources running at 2.9 kHz (48x a 60 Hz frame rate, or 120x a 24p rate), you'll never be happy with anything that "flashes". |
2.9 kHz, eh? Aha, yes, that helped me find my own post where I listed the specs the last time I looked this up!! 
I don't know what the current color-wheel technology is -- I think they have 7-segment wheels (2x color cycles) rotating at 4x frame speed, for 480Hz @ 60 frames/second -- but I assume you're in the right ballpark. So yes, if I still get annoyed by rainbows with that, even with the RPTV effect Dave mentions, that would seem to make any flashing DLP solution a no-go for me. Unless I want to "get better" at listening to the Blose ... err, I mean not seeing rainbows.
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Tue Jul 28, 2009 3:20 pm Post subject: |
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| garyfritz wrote: | | I think they have 7-segment wheels (2x color cycles) rotating at 4x frame speed, for 480Hz @ 60 frames/second -- but I assume you're in the right ballpark. |
Acutally, pretty much nothing is 4x anymore. That pretty much died 3 years ago!
The popular now are 7 segement (extra is dark green not clear) 5x color wheels (this is what the BenQ 1080p PJs have for instance). There are also some 6x color wheels out there (optoma has some).
This is a tricky balance though. The faster the color wheel (or LEDs flashing) the worse the color saturation. So, you have to have it fast enough that 95% of the people only rarely see rainbows and slow enough for good saturation.
5x seems to hit this mark, 6x reduces the rainbows and their duration but at the cost of a little saturation.
| garyfritz wrote: | | So yes, if I still get annoyed by rainbows with that, even with the RPTV effect Dave mentions, that would seem to make any flashing DLP solution a no-go for me. Unless I want to "get better" at listening to the Blose ... err, I mean not seeing rainbows. |
Yep, you are probably one of the 5% that could not be happy with DLP.
But, I think I'm going 1080p DLP for a few reasons:
1) I'm going to stick with anamorphic lenses for scope. Anamorphic lenses do two bad things: reduce ANSI CR and soften the image. Since DLP has by far the best ANSI CR, this reduction is minor (much more noticable on LCoS) and since they are the shapest, even with an anamorphic lens, you have a picture at least as sharp as LCoS (and way more than CRT).
2) There is never much depth of image in low APL scenes. A good 1080p DLP looks very slightly more washed out than the JVC on low APL scenes, but the DLP has much greater depth of image on high APL scenes.
Honestly, after looking at a bunch of the current crop of PJs, it comes down to this for me:
JVC - excellent low APL performance, very good high APL performance
good 1080p DLP - very good low APL performance, exceptional high APL performance
CRT - exceptional low APL performance, mediocre high APL performance
Pick your poison--I have decided for the shear pleasure of the depth of field on high APL scenes, I'll live with a rainbow flash here and there.
_________________
Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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VideoGrabber
Joined: 09 Apr 2006
Posts: 933
Location: Michigan
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| Posted: Wed Jul 29, 2009 12:29 am Post subject: |
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Dave commented:
> The faster the color wheel (or LEDs flashing) the worse the color saturation. <
That may be true (I've never actually looked at color-wheel RPTVs), but I can't imagine the color saturation on the 5' diagonal LED DLP set I have in the corner (61A750 RPTV) for daytime and/or "TV" viewing could be any better. The R/G/B LED light sources they use are extremely pure and accurate primaries.
Also, while Samsung rates them at 60,000 hours, the manufacturer rates them at 100,000+. Power requirements are about 100W at normal levels (for the whole set), which means it's both cool and quiet. But that discussion probably belongs in the thread Gary referenced.
_________________
- Tim
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tuxman
Joined: 21 Mar 2006
Posts: 13
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| Posted: Thu Sep 02, 2010 5:19 am Post subject: Re: Which digital projector would U get if God banished CRTs |
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| WanMan wrote: | | Which digital projector would U get if God banished CRTs? |
SONY Bravia VPLHW15 HD1080P
Hey WanMan, even us with less than 10 post get to vote.
Yes, you guessed it, for a projector that is almost a year old! How dare I do that! Thats not in the rules! It must be spam!
I just hope this makes your day that much worse than it must already be.
_________________
I suggest CRT for home theatre do-it your self types, 3 chip LCD for plug and play types, and I don't recomend 1 chip DLP to anyone.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Sep 02, 2010 5:56 am Post subject: Re: Which digital projector would U get if God banished CRTs |
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| tuxman wrote: | | WanMan wrote: | | Which digital projector would U get if God banished CRTs? |
SONY Bravia VPLHW15 HD1080P
Hey WanMan, even us with less than 10 post get to vote.
Yes, you guessed it, for a projector that is almost a year old! How dare I do that! Thats not in the rules! It must be spam!
I just hope this makes your day that much worse than it must already be. |
LMASSOROTF
_________________
Tech support for nothing
CRT.
HD done right!
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Thu Sep 02, 2010 8:40 am Post subject: |
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VideoGrabber
Joined: 09 Apr 2006
Posts: 933
Location: Michigan
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| Posted: Sun Sep 05, 2010 12:33 pm Post subject: |
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Wow! A zombie-thread. Back from the dead, after more than a year in the grave.
_________________
- Tim
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Sun Sep 05, 2010 2:30 pm Post subject: |
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Based on the results from Mark Peterson's measurements, I'd get an RS35. But, then the same old condition applies: could I afford one.
_________________
Trust no one. Absolutely no one. Advice of the board.
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