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Old 12th February 2005, 01:14 PM   #21
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Join Date: Oct 2004
Quote:
Originally posted by 18wheeler


This monitor is posted last year in a Chinese website. It looks exactly same as the proview (even the sticker on the base). And I noticed that both were made in China.
MAG PS576W
Once I get rid of my excess LCDs I will try this Proview.
Ahh, thats def a different monitor, a fellow in another forum made the same mistake. The monitor discussed here is the PS576Ws with a totally different model #. I'll try to find that thread again to post the actual model number here...unless Inkog wants to share it with us (?)
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Old 12th February 2005, 01:46 PM   #22
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They are different BRANDs. But I am almost certain they were made by the same manufacturer. if you have been in Staples stores and actually looked at the Proview, you would find that they look exactly the same. Did you remember CMV 1512? CircuitCity had it as LiquidVideo, European customers had it as yet another brand. But they were the same every bits execpt the brand/model name on the case.

Quote:
Originally posted by sjetski71
Ahh, thats def a different monitor, a fellow in another forum made the same mistake. The monitor discussed here is the PS576Ws with a totally different model #. I'll try to find that thread again to post the actual model number here...unless Inkog wants to share it with us (?)
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Old 12th February 2005, 07:47 PM   #23
Inkog is offline Inkog  United States
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Quote:
Originally posted by TaskMaster
I've only seen fresnels large enough at DIY PROJECTOR COMPANY (the 15.5" ones). Some of the 80mm projection lenses may be fine, but look at your desired projected image size and throw distance - that may well dictate what lens you need to get. Something like this lens may be best, I'd just like to find something a bit cheaper.

"Our largest fresnel lens size is 15.5"x15.5" with a little bit of lens cut from each corner for durability reasons. "

With this, I'm thinking I should just go with the 17" 16:9 and cut it down.

I agree with you on the 135mm Long-Throw Projection Triplet, I've had my eye on that for a while. I'm just waiting to make sure it will work well with the fresnel lenses I find.


Some more info on the monitor:

OSD selectable fullscreen / normal setting! This means it will natively keep the correct aspect ratio of your selected resolution and center it on the screen. I think this is great! Supports:

640x480
720x400
800x600
1024x768
1280x768
1280x800

Pixel Pitch: 0.259mm
Display Area: 332*208mm
Nowhere does it state the response time.
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Old 12th February 2005, 08:51 PM   #24
Inkog is offline Inkog  United States
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" "Our largest fresnel lens size is 15.5"x15.5" with a little bit of lens cut from each corner for durability reasons. "

With this, I'm thinking I should just go with the 17" 16:9 and cut it down. " - ME

Sorry, I just noticed that that is 17" diag.

I'll be able to cut down the 15.5" so the cut corners will not be an issue. So, those fresnels should work nicely with this LCD. Can anyone vouch for thier quality and DIYProjectorCompany's in general?

I've been watching 720p content all day on this ProView and I'm very impressed. I can't wait to get my optics and start experimenting
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Old 12th February 2005, 10:54 PM   #25
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Default Proview LCD screen artifact

I have a projector that uses a 15" XGA Proview LCD, and I see a similar viewing angle artifact with a totally black screen. There is a darker area in the top half of the image and a bit lighter area making up the entire bottom third. It is only noticable when you have an image that is very very dark, like a computer-generated test pattern. Real images from TV, DVDs, etc. all look fine. Even very dark scenes from movies look fine.

I have not tried using split fresnels. That might even it out, but it does not affect normal viewing at all.

This LCD has a much better image in the projector than it had with the original backlight. It was very difficult to find a good viewing angle when I tried to use it as a computer monitor. Different areas of the sceen would be brighter or dimmer. Moving away from it was the solution, since that gives a more uniform viewing angle. I am using a long throw lens and one of LumenLab's "790 mm" field fresnels, so that is equivalent to viewing the LCD from some distance. Looks great on the screen.
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Old 12th February 2005, 11:36 PM   #26
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Inkog...there is a company called www.vdigi.com that sells an adapter that takes a HDTV component signal and converts it to VGA. This would mean that if you hook it up to a DVD player that ouputs 720p, it would send 1280x720 lines to your monitor. I was wondering that since this monitor seems to automatically adjust and center aspect ratios that are not native that it may center the 720 lines over the 800. That is cut off 40 lines from top and bottom.

If this ends up being the case, we could have the very first honest to goodness HDTV LCD DIYpojector ever built! I wanna know!
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Old 13th February 2005, 06:11 PM   #27
Inkog is offline Inkog  United States
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Unfortunatly the LCD does not support 1280x720, it just displays "Mode not Supported". I have a ATI HDTV Tuner That I'm using to display HD content and it looks awsome. The DTV tuner software allows me to configure the aspect ratio and does a very good job displaying nice black bars. I would be nice if you could make a standalone projector with this LCD, but I have always planned on using it with a HTPC, so I'm happy.

I just got back from Home Depot with my new Dremel 400 XPR You damn DIYs have created another monster

I'll post some pics of the monitor shortly
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Old 13th February 2005, 10:54 PM   #28
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Unfortunately, mine has diagonal lines all through the screen. Very subtle, but they are there, at any resolution. It is particularly bad when there is movement in the picture. I'm not sure if the scaling ship is defective on my example, or if this is a flaw in all of these units. The artifact is not too bad if one stands back a few feet from this small screen, but blown up to 80-100" or so, it will look really bad. It is not a native resolution issue, as I have it perfectly dialed in with powerstrip at 1280x800p and the image is extremely sharp.

I successfully stripped the LCD; it was not hard once I realized that the front bezel slides up slightly to then pull it off, rather than prying.
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Old 14th February 2005, 03:33 AM   #29
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It is very easy to strip .

And I didn't see any problem. Might be it is that my eyes are not sharp enough.

Ben_tech, could it be that you had a bad unit? if yours can be put back together, you might want exchange to another one.
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Old 14th February 2005, 04:56 AM   #30
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Update: I don't think it is a ground loop, as I plugged it into every outlet I have, including two different monster cable power conditioners and a quality UPS. I also tried two different known-good computer systems with totally different video cards. All of my other LCD monitors do not have this issue. I suppose I could try to exchange this one. Note that the monitor exhibited the diagonal lines before my careful stripping job as well, and the box was not damaged or anything. This is a shame, as I really like the unit otherwise.

Even if every unit has this issue, it may be watch able for some. But, nearly half of the pixels - on mine at least - are being used for the interlaced diagonal lines during most movements in movies/games, etc.
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