Just Purchased Viewsonic Pro8200 Refurb- pixel blur??? defective??? - AVS Forum
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post #1 of 5 Old 05-05-2012, 05:39 PM - Thread Starter
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Is my projector defective?

I just purchased a refurbished Viewsonic Pro8200 projector. sub$1000, 1080p, 1-dlp. 3 month warranty and I can still return to vendor. I'm new to projectors as this is my first so I don't really know how a projector image should look. Either my expectations were too high or i have a defective unit. Here are problems:

-when i look close up at a pixel I can see separation in the colors, which I wouldn't think should happen with a 1 chip dlp.
-It doesn't seen like I can pull the pixels into sharp focus.
-If i make a black bar, one pixel wide, on white background the pixels adjacent to the black bar are grey.
-one side of my screen seems to have a little yellow bleed along the edge

I was hoping that even these budget projectors would provide crisp distinct squares of color. I thought that it would be impossible for a 1-dlp chip to give color separation but maybe there's something wrong with the optics. maybe a low cost projector just can't give the accuracy of a tv/computer monitor. Anyways, any help is greatly appreciated.
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post #2 of 5 Old 05-05-2012, 05:43 PM
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Make sure AUTO-Keystone is turned off and Keystone is at 0, and make sure you have the 16:9 vs. Auto setting configured correctly or you may lose 1:1 pixel mapping. Also, there is by default some Overscan that you need to turn off. The Benq w1060/w1100/w1200 is probably sharper if that is what you are after.

All that said, there is a little chromatic abberation with some cheaper DLP's even with no keystone, this is due to cheaper optical assemblies. Some DLP's suffer from poor focus uniformity instead of CA, so pick your poison. The yellow bleed however sounds abnormal. My Pro8200's only real issue is a slight color uniformity issue but it's invisible in ALL viewing (the left side has 20% more red tint to it then right side). I am very impressed with the PQ this projector can produce, and the contrast is actually fairly decent at this price range.

The Viewsonic Pro8200 is pretty sharp for a cheap DLP once you consider how good the focus uniformity is. It is true that a projector like a Benq w6000 or Mits hc4000 has less CA and will focus tighter at the most focused point, but even the Mits has a focus uniformity issue that makes it not much better in sharpness than the Viewsonic overall (Mits is a tad better at sharpness, and the Benq is even a tad better than the Mits).

However, I cannot say if your unit has some variance beyond the normal Pro8200's, I am not sure. Pixels will rarely be perfect looking on a projector when you walk right up to the screen, what is important is how sharp it is from seating distance. You can take a picture and show it to me, and I might be able to tell you if it looks about the same as mine.

You also need to focus about 1/3rd into the screen (not the middle) in order to acheive the best sharpness.

The Viewsonic Pro8200 isn't as sharp as a JVC RS-45/RS-55/RS-65 and not quite as sharp as a Mits hc3800/hc4000, but it's about equal to an Epson 5010 or maybe a tad sharper than the Epson. Hence, it's plenty sharp for what most people would require. It is basically like a sharp LCD with very good convergence, but it is not as perfect as the sharpest projectors (but few are). Buying a DLP does not guarantee you will be getting one of the sharpest projectors, certain DLP's are better than others.


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post #3 of 5 Old 05-05-2012, 06:08 PM - Thread Starter
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Thanks coderguy . Haha, I saw your post in another thread where you said you had this projector and started writing you a message asking you to take a look at this thread. When I looked back here to get the address to the thread you had already sent me an awesome response! I'll check those things and if they don't resolve the issues I'll get some pictures on here.
-Kris
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post #4 of 5 Old 05-05-2012, 07:48 PM - Thread Starter
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Ok,

auto keystone was already off
keystone already set to 0
already set to 16:9 as opposed to auto

The overscan is set to 3 and I can't figure out how to to get it off for the life of me. I'm pretty sure that is where my problem lies. The stretching and smoothing would explain why pixels are bleeding into their neighboring pixels. The projector didn't ship with the manual so if you're still on do you mind telling me how you got the overscan turned off? On the menu screen, under the video/audio tab, the overscan option is grayed out. When i cursor down to it it jumps right past to the next option. If you don't know it off the top of your head don't worry about it, i think i should just call viewsonic anyways.
thanks
-kris
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post #5 of 5 Old 05-05-2012, 08:16 PM
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I am not sure overscan really would make that much difference, but you can try.

Change to S-VIDEO or any non-used input, turn off overscan, set noise reduction to LOW, and then change back to the source you were on. The setting should be retained. For any setting that is not adjustable (greyed out), you should be able to do this same procedure.


Quick and Easy Shelf Mount Method for both one projector or dual stacks

Web Calculator v023 & v025
- Quick Peak at the new upcoming calculator
**Current Projector Calculator** -- http://www.eliteprojectorcalculator.com

Coder's Top Projector Picks of 2012 --http://www.avsforum.com/avs-vb/showthread....

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