Optoma HD81-LV Discussion/Reviews - Page 4 - AVS Forum
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post #91 of 493 Old 09-13-2007, 05:45 PM
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Art and Jeff,

I am about to swing for a LV. Before I do I would like to here again your impressions. Please don't hold anything back. Remember, I have a fully functional, no error HD81 that I am extremely happy with. If you were me, is it worth the upgrade?

Thanks

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post #92 of 493 Old 09-13-2007, 06:03 PM
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Quote:
Originally Posted by jmorris644 View Post

Art and Jeff,

I am about to swing for a LV. Before I do I would like to here again your impressions. Please don't hold anything back. Remember, I have a fully functional, no error HD81 that I am extremely happy with. If you were me, is it worth the upgrade?

Thanks

Joe

You are one of the few who still has smiles after owning an HD81. I think you would be pushing you luck abit. I can just imagine the tears and moaning and crying if you sell yours and need a replacement LV evey few weeks like MrHIFI.

I agree they do sound appealing. I am attempting to hold off as long as I can.

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post #93 of 493 Old 09-13-2007, 06:49 PM
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Quote:
Originally Posted by 1Sharpdog View Post

I think you would be pushing you luck abit.

That is exactly what I am worried about!!

Joe

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post #94 of 493 Old 09-13-2007, 06:57 PM
 
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Quote:
Originally Posted by jmorris644 View Post

Hey Art,

What happens when I hit 1000 posts? Anything magical?

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You end up spending more $$ on HT Equipment than you ever dreamed.
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post #95 of 493 Old 09-13-2007, 06:59 PM
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Quote:
Originally Posted by scottyb View Post

You end up spending more $$ on HT Equipment than you ever dreamed.

LOL, that is what happened at 100 posts!!!!!!

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post #96 of 493 Old 09-14-2007, 09:01 AM - Thread Starter
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Quote:
Originally Posted by jmorris644 View Post

Art and Jeff,

I am about to swing for a LV. Before I do I would like to here again your impressions. Please don't hold anything back. Remember, I have a fully functional, no error HD81 that I am extremely happy with. If you were me, is it worth the upgrade?

Thanks

Joe

Joe,

If you feel that you need more lumens after D65 calibration, the LV makes
sense. If you feel that more CR would be important, the LV could make some
sense.

How much the above is worth to you in dollars, only you can answer.
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post #97 of 493 Old 09-14-2007, 12:12 PM
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If you have a working HD81 that you are happy with, I would not spend the money. Hate to say it too loudly but I liked the colors of the 81 a tad better. I never use the Brilliant Color option bcause frankly, it makes for a garrish picture. I know Jeff believes in the D65 setup from ISF. I've been doing it for so many years that I understand the compromises you have to make to get something that is called D65. I think Optoma does a great job out of the box. The sources and inputs are all over the place so why waste the money to adjust to something that no one relly adheres to anyway? Find me 2 movies or even 2 scenes where the color balance and temperatue are adjusted properly and I'll use it as a reference.

I would use that 81 until you get sick of it or it breaks. If it works, don't mess with success. Obviously, you have a good one.

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post #98 of 493 Old 09-19-2007, 01:58 PM
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To cinema scope or not to cinema scope.

I'm considering getting an LV but haven't chosen a screen yet. I think it would be cool to have a cinemascope screen, get the anamorphic lens and curve the screen to compensate for the distortion. This would do it for cinemascope be it higher resolution and brighter (which I'm not sure the later is needed with an LV). I'm also not sure I fully understand what happens with the 16:9 content. I've heard it said that the majority of viewing will probably be 16:9. If you have a cinema scope screen do you use the lens to compress the 16:9 content onto the 2.35:1 screen? Seems this would make things look very distorted. Or do you keep the 16:9 aspect ratio and have black bars on each side?

My room will limit the width of either screen to 108". My choice seems to be either a 61" high 16:9 screen or a 46" high cinema scope screen. Cinema scope content on either screen can be projected up to a diagonal of 117" (108" wide). Wide screen 16x9 content on a wide screen can be projected up to a diagonal of 124" (108" x 61"). However wide screen 16:9 content on a cinema scope screen will only be projected up to a diagonal of 94" (roughly 82" x 46") if you keep the 16:9 aspect ratio. If my math is correct, the 16x9 content on a cinema scope screen will be 75% the size it could be on a 16x9 screen [given a fixed width].

Am I out in the weeds on 16x9 content and a cinema scope screen? Any other thoughts on the screen selection would be appreciated too.

Thanks
Bryan
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post #99 of 493 Old 09-19-2007, 06:05 PM
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I have an HD81LV here now. It's not mine it's another members, I'm grayscale tuning it for him. But this gives me a chance to get some measurments, should be interesting. Thanks Larry I'll take good care of your baby for ya.

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post #100 of 493 Old 09-19-2007, 06:17 PM - Thread Starter
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Quote:
Originally Posted by bkhawk View Post

To cinema scope or not to cinema scope.

I'm considering getting an LV but haven't chosen a screen yet. I think it would be cool to have a cinemascope screen, get the anamorphic lens and curve the screen to compensate for the distortion. This would do it for cinemascope be it higher resolution and brighter (which I'm not sure the later is needed with an LV). I'm also not sure I fully understand what happens with the 16:9 content. I've heard it said that the majority of viewing will probably be 16:9. If you have a cinema scope screen do you use the lens to compress the 16:9 content onto the 2.35:1 screen? Seems this would make things look very distorted. Or do you keep the 16:9 aspect ratio and have black bars on each side?

However wide screen 16:9 content on a cinema scope screen will only be projected up to a diagonal of 94" (roughly 82" x 46") if you keep the 16:9 aspect ratio. If my math is correct, the 16x9 content on a cinema scope screen will be 75% the size it could be on a 16x9 screen [given a fixed width].

Am I out in the weeds on 16x9 content and a cinema scope screen? Any other thoughts on the screen selection would be appreciated too.

Thanks
Bryan

Bryan,

I have an LV with the Panamorph UH380 lens and M380 sled. I only use the
lens when watching 2:35 material in a 16:9 frame or 16:9 material in a 4:3 frame. Therefore, 16:9 material is left as normal, with black bars on the sides. A curved screen is nice, but the pincushion distortion is not very
evident on normal live action material, so you could save money on the screen
and put it into the motorized sled for the lens.

The LV set in Auto235 mode does a great job of automatically engaging the
vertical expansion in the scaler and triggering the lens sled. It's pretty slick,
and the optical quality of the UH380 is very good, no chromatic aberration,
not much softening, good light transmission, just some pincushion distortion
noticeable on the edges using cross hatch patterns.
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post #101 of 493 Old 09-19-2007, 06:20 PM - Thread Starter
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Quote:
Originally Posted by guitarman View Post

I have an HD81LV here now. It's not mine it's another members, I'm grayscale tuning it for him. But this gives me a chance to get some measurments, should be interesting. Thanks Larry I'll take good care of your baby for ya.

That's great Tom! I would like to see you take full measurements before and
after D65 calibration, lumens and/or foot lamberts at low power with different
iris settings, and your subjective impressions of the LV vs. the HD80, ideally
without things like Brilliant Color, Auto Gamma, edge enhancement, B&W extension, Vivid Color, True Color or any other additional processing(gimmick).

I'd like to see what combination of iris, bulb setting you use to get max CR.

Thanks very much!
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post #102 of 493 Old 09-19-2007, 06:47 PM
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I don't know how much I can get in one night, but I'll get some important details.

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post #103 of 493 Old 09-19-2007, 07:14 PM
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Quote:
Originally Posted by guitarman View Post

I don't know how much I can get in one night, but I'll get some important details.

Tom,

Like your signature says, "VideoDementia". Just imagine you have 5 days instead of 1. You should be able to get a LOT of measurements then. Heck, you won't know the difference anyway.

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post #104 of 493 Old 09-19-2007, 11:20 PM
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Well on first look I like the black color on the projector itself, nice to have the scaler around also. It's a good amount of equipment to work with.

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post #105 of 493 Old 09-20-2007, 03:08 AM
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I got the OTB light level, 32.5 ft-candles at factory. Tuning the blacks and whites to max levels 100IRE 44.7 ft-candles. No problems with brightness. : I didn't have time for much more, just grayscale tuning for the gentlemen and a few screen shots for a review. You really need more than a couple of hours for extensive reviewing. But from what I've seen the HD81LV looks great. It conforms to D65k tunups nicely, colors look very natural, face tones look natural, detail is 1080p excellent. Overall a very nice projector for high brightness yet capable for a dark enviorment for HT viewing with the Iris control.

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post #106 of 493 Old 09-20-2007, 03:27 AM
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I got the OTB light level, 32.5 ft-candles at factory. Tuning the blacks and whites to max levels 100IRE 44.7 ft-candles. No problems with brightness. : I didn't have time for much more, just grayscale tuning for the gentlemen and a few screen shots for a review. You really need more than a couple of hours for extensive reviewing. But from what I've seen the HD81LV looks great. It conforms to D65k tunups nicely, colors look very natural, face tones look natural, detail is 1080p excellent. Overall a very nice projector for high brightness yet capable for a dark enviorment for HT viewing with the Iris control.

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post #107 of 493 Old 09-20-2007, 01:07 PM
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The 100IRE 44.7ft candles is a factory setting and also that was econo mode, you can add another 25% with bright mode. You figure lumens by ft-candles times screen sqft. So that's near 1900lumens in bright mode on a 106" daig 1.0gain screen.

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post #108 of 493 Old 09-21-2007, 12:41 PM
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post #109 of 493 Old 09-21-2007, 04:40 PM
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Hi Folks
I have just purchased a LV and I was wondering if those with them could guide me.

My main viewing area is about13 feet from the screen and I want to use a 2.35:1 screen, any idea how big I can go without sacrificing quality either from pushing the image too large or viewing from to close?

I have already measured and could easily put in a 144" wide screen.

I appreciate any help from you who are more in the know

Thanks
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post #110 of 493 Old 09-21-2007, 06:58 PM
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The LV has a 33% screen height offset, you have to figure how high you can hang the projector and how far back can it be. How high is the ceiling, is there alot of room to move the PJ back. You can sit close to 1080p machines an not see the screen door. You have options.

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post #111 of 493 Old 09-22-2007, 02:17 PM
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pudljmpr,

Mine is 96" wide and I often sit a few feet from the screen to get the WOW effect magnified. Make it as big as you can. Your limiting factor will not be PQ degradation.

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post #112 of 493 Old 09-23-2007, 07:04 PM
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does the HD81-LV have lens shift?

Why does anyone have to start a sentence with "So"?
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post #113 of 493 Old 09-23-2007, 07:15 PM
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Is the Optoma HD81-LV a more reliable polished/finished product than the Optoma HD81?

Does the Auto 2.35:1 FW work as it should with the Panamorph Lens?

Is it any less heat sensitive?

Is it any quieter?

Murray Kerdman
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post #114 of 493 Old 09-23-2007, 07:56 PM
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No lens shift on the HD81LV, so far it doesn't have any of the short comings the early HD81's had. According to Optoma they detected the heat related problem on the HD81 and fixed it, anyone that had the earlier machines were told to send them in for a swap or fix. They should all be running smoothly by now. I did hear it's quieter, but I didn't think the sound level on the HD81 was high when in econo mode. The fan has a smooth dull type sound. Not objectional to me, certainly not like an Infocus 72xx or early presentation machines I've owned.

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post #115 of 493 Old 09-23-2007, 08:16 PM
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I read where Mr. HiFi has already had 2 (or more?) HD-81LV's and Jeff Regaen had reported some shortcomings he had been told (or expected) would be fixed in HD-81LV (I do not recall if Jeff needed an exchange).

I am considering all the current/pending 1080P suspects (mostly DLP but some LCD & LCOS) under $10K as well as the remote possibility of an InFocus 777 3-chip 720P.

I need a 2.35:1 (11.5 foot wide) capable projector at 16-17 foot seating distance with a light controlled room but with the desire to also watch some daytime weekend sports without going bat-cave with the drapes.

However, whatever I buy, I do not want to be taking it down to ship it back or rebooting in the middle of a movie because of a loss of sync or image.

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post #116 of 493 Old 09-23-2007, 08:34 PM
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Those gentlemen did have early machines but that problem has long been identified. They don't own the HD81 any more and have moved on to the HD81LV which ofcourse won't have the problem the early HD81 had. If you buy an HD81 now it should be new stock with no problems. The HD81 looks like a bargin now, if you have more money to spend the HD81LV would be recommened. I totally enjoyed the HD81LV I tuned for a member, I did some screenshots a little ways back, which I thought to be the best renditions of the same screens shots I've done on other models. The coloring of the RGBCYM colorwheel gives excellent color, I could see it in the colorbars patterns. Excellent Blue/Red/Yellow, Green was deep but with a slight yellow/ very slight. That's to be expected for this level or brightness push. 1900 lumens on a 106" screen if you wanted lumens that high. Which can be toned down with the Iris.

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post #117 of 493 Old 09-23-2007, 09:38 PM
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Quote:
Originally Posted by guitarman View Post

1900 lumens on a 106" screen if you wanted lumens that high. Which can be toned down with the Iris.

Is the "1900 lumens on a 106" screen" a diagonal 16X9 image fiqure?

Is the HD81-LV iris entirely manual - i.e. does it require easy access to the projector to make adjustments?

Is the bulb life on an HD81-LV expected to be shorter than other 1-chip DLP units, including the HD81?

Murray Kerdman
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post #118 of 493 Old 09-24-2007, 06:06 AM
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Thought I should address some of the issues that have been raised. My first HD8-LV failed within a few days. The second unit has worked well 99% of the time. As I approach the 8 hour on time limit, I do get some minor color blotching which is fixed dby turning up the fan speed. This has happenedd twice. The recurring issue that i have not solved is that the VXD will switch from one input to another with no action on my part. this has hapenned a dozen times or more and is unpredictable. Those are the only negatives with this machine. It is superb and I love the picture. I had an interesting experience yesterday which I will recount. I was watching the Brothers Grimm. Up until now, i have not liked the Brilliant Color control because of the way it destroys the color pallate. Yesterday, I found that setting it on 3 created what can only be described as a movie-like/theater-like experience. The image was 3 dimensional and lifelike.

mkerdman,

The IRIs operates from the remote control. I see no reason why bulb life should be different than the life one should expect with other projectors. The sound from the LV at the lowest speed is acceptable. It is the whine of the color wheel that one hears.

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post #119 of 493 Old 09-24-2007, 08:41 AM - Thread Starter
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Quote:
Originally Posted by mkerdman View Post

Is the Optoma HD81-LV a more reliable polished/finished product than the Optoma HD81?

Does the Auto 2.35:1 FW work as it should with the Panamorph Lens?

Is it any less heat sensitive?

Is it any quieter?

The HD81-LV is a progression of the HD81, it's reliability is yet to be seen and
there are issues that carried over from the HD81, such as; poor auto iris implementation, slow source switching, full field blacks still not class leading,
nor is CR.

Vertical offset seems to be the claimed 36%, whereas the HD81, although claimed 36% was only 27%, so I now have to tilt the projector up due to 8' ceiling, resulting in vertical keystone. There is still light leakage, halo effect outside of the frame, out of the box gray scale is not good, there is a large loss of lumens once calibrated to D65, but still at least as bright as an uncalibrated HD81.

Auto235 works well, but can be bothersome if channel hopping. I have not
had any heat shutdowns or blue screens, although the projector did shutdown
once for no apparent reason--probably an HDMI issue.

I do not find the noise to be bothersome in low lamp mode, it is loud in bright
mode.

The warranty has been improved to a three year hot swap and based on my
HD81 reliability issues, this is essential. The bulb now has a one year warranty.

I recommend a review of my first post on this thread, which I have continued
to update over the weeks.
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post #120 of 493 Old 09-24-2007, 09:24 AM
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"As I approach the 8 hour on time limit"

Good practice not to run a PJ 8hrs straight, maybe 6hours and not too often either.

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