Official JVC DILA-X500R / RS49U / RS4910U Owners Thread - Page 119 - AVS | Home Theater Discussions And Reviews
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post #3541 of 3560 Old 03-02-2015, 12:32 PM
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Originally Posted by curlyjive View Post
I could be wrong on this, but dynamic gamma should help prevent crushing of detail, but dark scenes will still be overall darker with iris set to Auto than just full open. In some 3D movies like guardians of the galaxy I have felt there is still a benefit to the DI, especially if the entire movie isn't on the darker side. On films like Desolation of Smaug, which is pretty dark all the way through, I preferred leaving it off.
With the JVC's DI set to auto 2 it doesn't crush black or low end detail, but it can clip whites on occasion and is exacerbated depending on how you have the gamma, brightness, and a few other settings calibrated in the menu's. The DI system on most projectors (including the JVCs) electronically shifts the spectrum of the DILA chip so non black pixels are actually brighter to compensate for the iris being closed. That is, when the iris is closed down to a particular position the chips is modulated so the pixels let more light leave the chip to compensate the iris closing down. With the manual iris being used this doesn't happen. Whether or not it fully compensates for the iris being used I don't know, but what you're referring to is not extreme. Dark scenes still "look" bright and this is the reason why.

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post #3542 of 3560 Old Yesterday, 11:21 AM
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Anyone that has been thinking about getting an RS4910 - this is the time - call us for details.

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post #3543 of 3560 Old Yesterday, 11:48 AM
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Anybody that thought they could never afford a 6710, Should call and ask about B-stock.

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post #3544 of 3560 Old Yesterday, 12:05 PM
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Originally Posted by AV Science Sales 5 View Post
Anybody that thought they could never afford a 6710, Should call and ask about B-stock.

I recently bought the uk equivalent the X900 for a great price and it's awesome folks.......so if you've got the chance to buy one of these for a good price......you'll never regret it.....!!! :thumbsup:


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post #3545 of 3560 Old Yesterday, 01:47 PM
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Anybody that thought they could never afford a 6710, Should call and ask about B-stock.
What does the 6710 get you over the 4910?

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post #3546 of 3560 Old Yesterday, 02:21 PM
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What does the 6710 get you over the 4910?

Native contrast of 6710 is 150 000 : 1 dynamic 1 : 500 000 : 1 as opposed to
60 000 : 1 dynamic 600 000 : 1 for the 4910. The 6710 also gets the automatic lens cover and is thx certified and more user presets to use as far as I know.


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post #3547 of 3560 Old Yesterday, 03:42 PM
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Anybody that thought they could never afford a 6710, Should call and ask about B-stock.
What is b-stock?
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post #3548 of 3560 Old Yesterday, 04:25 PM
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What is b-stock?
http://shop.avscience.com/B-Stock-Closeouts_c_31.html

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post #3549 of 3560 Old Yesterday, 06:26 PM
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Originally Posted by beastaudio View Post
What does the 6710 get you over the 4910?
On top of the other things mentioned above:

5 year warranty
spare lamp
two pair of 3D glasses
3D emitter

All of that comes with 6710.
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post #3550 of 3560 Old Yesterday, 09:46 PM
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Originally Posted by curlyjive View Post
Do most of you use or disable the Dynamic Iris for 3D?
When the projector sees a 3D signal, it switches to a 3D color mode, sets the Iris to manual, opens it all the way and sets gamma to "brightness priority". It also sets CMD to Low, if you have not changed it.

Don't forget to set your Brightness and Contrast when in the 3D color mode. If you bring up the menus you'll notice everything will be set at zero.
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post #3551 of 3560 Old Today, 08:44 AM
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When the projector sees a 3D signal, it switches to a 3D color mode, sets the Iris to manual, opens it all the way and sets gamma to "brightness priority". It also sets CMD to Low, if you have not changed it.

Don't forget to set your Brightness and Contrast when in the 3D color mode. If you bring up the menus you'll notice everything will be set at zero.
Mine did not switch. It stayed on the custom user mode I use. I setup a new user mode for 3D with high lamp, Auto Iris, CMD off, and custom gamma. For now I am using color mode 3D Cinema until I do a full 3D calibration.

I did set my brightness and contrast to the values I use for 2D, but I should probably recheck them. Should they be set with the glasses or without? Never though about that...I would think without so that you don't raise it to a point where digital 16 and below begin to show.
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post #3552 of 3560 Old Today, 08:58 AM
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Originally Posted by curlyjive View Post
Mine did not switch. It stayed on the custom user mode I use. I setup a new user mode for 3D with high lamp, Auto Iris, CMD off, and custom gamma. For now I am using color mode 3D Cinema until I do a full 3D calibration.

I did set my brightness and contrast to the values I use for 2D, but I should probably recheck them. Should they be set with the glasses or without? Never though about that...I would think without so that you don't raise it to a point where digital 16 and below begin to show.
The switch is only automatic when using a factory preset (standard, cinema, stage, animation), as it enables a 3D twin preset (3Dstandard, 3DCinema, etc). If you use a custom user mode, you have to use a custom 3D user mode as you did, and switch manually to it.
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post #3553 of 3560 Old Today, 09:13 AM
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The switch is only automatic when using a factory preset (standard, cinema, stage, animation), as it enables a 3D twin preset (3Dstandard, 3DCinema, etc). If you use a custom user mode, you have to use a custom 3D user mode as you did, and switch manually to it.
Yep thats what I figured. I prefer it that way anyway.

So should you set brightness and contrast with the glasses on or off? I can rationalize it both ways, but not sure which is correct. I know to calibrate with the probe looking through the glasses.
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post #3554 of 3560 Old Today, 09:15 AM
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i would love to buy one of these but they are soo expensive when i can get a 4k tv for 1,000$ less
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post #3555 of 3560 Old Today, 10:00 AM
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i would love to buy one of these but they are soo expensive when i can get a 4k tv for 1,000$ less
Maybe you should look into a B-stock unit.

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post #3556 of 3560 Old Today, 10:09 AM
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Originally Posted by curlyjive View Post
Yep thats what I figured. I prefer it that way anyway.

So should you set brightness and contrast with the glasses on or off? I can rationalize it both ways, but not sure which is correct. I know to calibrate with the probe looking through the glasses.
You should set brightness and contrast playing 3D patterns (like in the Spears and Munsils test bluray) with the glasses. You want to resolve the actual levels, with the glasses on.


If you don't have the S&M disc, you can try playing 2D patterns with the 2D->3D conversion of the JVC switched on (and wearing the glasses).
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post #3557 of 3560 Old Today, 10:28 AM
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Originally Posted by Manni01 View Post
You should set brightness and contrast playing 3D patterns (like in the Spears and Munsils test bluray) with the glasses. You want to resolve the actual levels, with the glasses on.


If you don't have the S&M disc, you can try playing 2D patterns with the 2D->3D conversion of the JVC switched on (and wearing the glasses).
Ok that makes perfect sense. I do have the S&M v2 disc so I'll give that a go. Thanks for the tip!

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post #3558 of 3560 Unread Today, 11:29 AM
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Maybe you should look into a B-stock unit.
That's exactly what I did and I don't regret the extra money in the slightest. I have only had the chance to setup the projector temporarily but it was incredible. Now the construction begins
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post #3559 of 3560 Unread Today, 12:01 PM
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i would love to buy one of these but they are soo expensive when i can get a 4k tv for 1,000$ less

A " TV " never produces an image that looks as good as a 2 piece front projection system can, IMO. It's always a TV with reflective glass in front. It's not a theater. Plus, 120" diagonal is my minimum size - hard to find a TV that big. So that extra $1K buys you a much better home theater experience.
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post #3560 of 3560 Unread Today, 07:02 PM
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i would love to buy one of these but they are soo expensive when i can get a 4k tv for 1,000$ less
Well, brandonb21, everyone gets to do what they want, and if you prefer that 4K TV that's fine. However there are a couple of things that draw most of us toward these projectors.

There is a hundred year artistic and story telling tradition built up on the bouncing of light images off a screen. There is a somewhat shorter tradition of story telling from a glowing screen. The two experiences are qualitatively different. Sure, you can watch movies on a TV, and if you prefer it, that's up to you. But many of us prefer the experience of a projected image in a darkened room--the theater experience in other words.

The other factor is the immersive experience of watching on a very large screen. I don't think you were suggesting that you could find a 4K TV of a size that compares to the screens most folks here are using.

Some of us are enthused about the first part, some about the second part, and many of us about both.
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