Official JVC X30 / RS45 owner's thread! - Page 54

Originally Posted by R Harkness

I'm not inclined to doubt owner reports of the RS45 looking like it has higher contrast.

JVC really does seem to have made a visible jump in performance. I've directly compared my new RS55 to my RS20, and the increase in image dynamics and contrast is quite obvious in favor of the RS55 (and frankly I was skeptical there would be a visible difference between the two, until I compared them).

Originally Posted by Manni01

Planet Earth is not 1080p24, it's 1080i60 or 1080i50 depending on the actual footage. That might be why CMD3 works well with it.

Originally Posted by nohjy

The RS40 also had a contrast ratio of 50,000:1. Definitely higher? Have you compared them directly? How would you know? I love how the hyperbole just flows with new owners. The only thing at this point that seems pretty certain is the RS45 is brighter than the RS40. keep in mind, brighter isn't always better. In most installations (at short to mid-throw) all it will do is raise the black floor (something many of us don't desire).

Originally Posted by coderguy

I seem to have a target on my back today.

It is not hyperbole, it is based on some evidence, could the evidence be wrong, yes maybe, but probably not. Just like anyone else in here I can make mistakes, but it is what it is.

I could turn this around and say the same thing that every time someone makes a statement, someone attempts to parse someone's words and tries to make them look foolish (look at the 24hz debate we just had), what a bunch of malarkey that at this level of discussion someone wouldn't know what 24p is, I mean seriously?

Just because I tried 3:2 pulldown doesn't mean I don't know the frames are uneven and it can increase judder, I try it because I love testing projectors, I do things out of the norm, etc... I even posted a DISCLAIMER noting it was weird that I was using 60hz mode, but I still had to listen to the 30 minute back and forth of how I'm doing it all wrong. It's fine, I don't take it personally, but I'm just pointing that out.

Or the convergence discussion the other day, somehow the pixels are not aligned to the pixel grid, but to the colors. The pixel grid splits the light in the projector at the electronics layers over the panels, so I'm thinking technically the pixels have to be lined up to the grid, not to each other, otherwise if you lined up green first and it wasn't perfect, then it'd add alignment bias to the rest of the grid. There is actually logic to my arguments, they aren't completely based on foolish pre-conceptions

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Now that I am done explaining myself because I apparently know absolutely nothing about this stuff

Originally Posted by Joesyah

What model is it, do you know the average measurements of overall contrast?

I have some sample pics from projectors I've had here on the same scenes.
Even on the mixed scenes, the contrast differences are clearly evident.
Here's the JVC RS45 compared to a projector with contrast around 2100:1.
If your projector has less contrast than it, you'll be floored by the differences.

The last pic in the Infocus SP8602, it kicks major ass in scenes like this! The darker the scene the further apart the lower contrast projector and RS45 become. The low apl scenes from Harry Potter are unwatchable on the Benq W1000 for my taste. Foggy haze is cast over the entire image. Pay special attention to the young boy's hair and jacket center at the table.

The differences are more than overwhelmingly evident in person.
Benq W1000


JVC RS45


Infocus SP8602

Originally Posted by Fatshaft

Here you go...
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 16 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 53mn 24s
Bit rate : 11.3 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits

Originally Posted by nohjy

I am sorry Coderguy! You seem like a good guy. I just want to see one really objective review of the RS45 vs. the RS40. I am curious as to how much of an upgrade the new model actually offers. I would just go out look at one, but no one around me has one and, anyway, you can't really compare projectors when they are not in the exact same viewing environment.

Originally Posted by nohjy

I am sorry Coderguy! You seem like a good guy. I just want to see one really objective review of the RS45 vs. the RS40. I am curious as to how much of an upgrade the new model actually offers. I would just go out look at one, but no one around me has one and, anyway, you can't really compare projectors when they are not in the exact same viewing environment.

Originally Posted by mouradb

Was anyone successful getting their (new) JVC glasses working from 20 feet with a bounced-back signal?

Originally Posted by TomHuffman

Here's a brief review of the new JVC DLA-RS45U or DLA-X30BU. These are same projectors sold through different JVC retail channels.

For the most part, this projector seems largely unchanged from last year's model. Here are some numbers from my work on the unit.

I quickly determined that the RS45 was just like last year's model in that the Cinema Mode-Standard Color Space provided the most accurate colorimetry. All measurements were taken in this mode.

Lumens and contrast

Lamp	Iris	Contrast	Lumens Post-calibration	Pre-Calibration
Normal	Open	17660	477	542
Normal	Closed	52000	281
High	Open	25600	713

The contrast you would expect under ordinary conditions is 17,660. You can get higher contrast simply by using the High lamp mode, but that derives from a larger peak white value rather than a lower black level. The 52,000:1 figure from the iris fully closed position is an estimate only. The actual value is somewhat higher. From the closest available distance I was not able to get my probe to read anything for black. In any case, this very high figure is achieved only by reducing the light output by nearly half, so most users will use the iris sparingly.

Grayscale



As you can see, the 6500K preset is somewhat bluish, suggesting that a setting of 6000K would be more neutral.

After using the built-in custom grayscale and gamma controls, I was able to get the grayscale to below 2 dE from 10-100%. However, even after using the custom grayscale controls, the 10% value was still far too bluish. I was able to resolve this by adjusting the RGB gamma values at 10%. This is a nifty feature that, in essence, provides a multi-point grayscale control for correction at individual points.



Colorimetry

Except for the luminance of blue, which considerably too low, the colorimetry of the RS45 in Cinema/Standard was excellent. This is good because the RS45 offers no CMS. With the addition of an external processor, such as a DVDO Duo or Lumagen Radiance, you could get perfect colorimetry at a price that is still lower than the RS55. In fact, the RS45 is a perfect candidate for these external processors that can visibly and measurably improve performance.



Gamma

When initially measured, the gamma seemed lower than the 2.2 preset would indicate. However, after changing the gamma value and then going back it measured a nearly perfect 2.2, suggesting that the built-in gamma tables need to be activated by this simple measure to get the best performance. Alternatively, this was just a glitch in this one unit.

Convergence

The convergence of the unit I looked at was very good. I made only one small adjustment to the blue vertical pixels kin the provided Pixel Adjust feature.

Subjective Impressions

I spent some time viewing some program material and what I saw was typical of a well-calibrated JVC projector--excellent depth and dynamic range with good sharpness and color accuracy. If I have any complaint it is only that the RS45 seems little changed from last year's already excellent model.

Comparisons

People will no doubt be interested in a comparison between the JVC RS45, Epson 5010, and the Sony VPL-VWPRO1 whose street prices are all at or slightly below the $3,000 point. From my limited exposure to the Sony it was my least favorite of the three based solely on the quality of the optics, which did not seem to resolve inter-pixel detail as well as the other two. Choosing between the JVC and Epson is a little more difficult. Both offer excellent installation flexibility with wide zooms and lens shift. Both provide excellent RGB convergence after making minor adjustments with the provided tools. Both offer a wealth of calibration controls and possess excellent colorimetry, grayscale, and gamma with only minor adjustments.

The JVC's image was somewhat more refined with better depth and a lower black floor. On the other hand, the Epson provided a punchier image, which I attribute solely to its greater light output. Other than that, there was little to choose between them. If you need the higher light output, go with the Epson. If your priorities are with contrast and the silky smooth quality of a LCoS engine go with the JVC. I doubt that many would be disappointed with either.

Originally Posted by Joseph Clark

Though the test was not objective, I had my RS40 and RS45 hooked up with an HDMI matrix switch, watching the exact same content, in the same room. Settings were virtually identical, but the RS40 had about 400 hours on the lamp. Sharpness and detail were at 0 on both. Though I had a hard time telling the difference in brightness (which really surprised me), the difference in contrast was striking. The RS45 seemed substantially better. I did this mainly as a test of 3D, and the RS40 showed far less ghosting, so in that sense it looked much better to me. For 2D, though, I prefer the punchier RS45. It also seemed sharper, and I attribute that to the increased contrast too. The RS40 looks great; the RS45 is a notch above that.

Originally Posted by Joesyah

Every online measurement has the RS45 brighter with higher contrast. Every professional reviewer has stated the same. I do not understand why it is hard to believe JVC can't make a great projector better in this regard?
Brighter allows you to use the aperture to its full potential, which also gives better contrast. Why would brighter be a bad thing for these projectors?

Originally Posted by TomHuffman

Here's a brief review of the new JVC DLA-RS45U or DLA-X30BU. These are same projectors sold through different JVC retail channels.
. . .

Originally Posted by johng

Hi Guys (why should I assume we are all guys?), I must be going blind. Can someone please point me to the page in the manual which explains how to save custom settings to User 1 through 5 on the Remote? I've read the manual over several times and somehow am missing this basic setting.

Thanks,

Originally Posted by TomHuffman

Lumens and contrast

Lamp	Iris	Contrast	Lumens Post-calibration	Pre-Calibration
Normal	Open	17660	477	542
Normal	Closed	52000	281
High	Open	25600	713

Originally Posted by JonStatt

Aside from the 3D, had you reset the gamma on your RS40 before you did the comparison? As the projector ages, the gamma would have lowered, resulting in a flatter image. On first comparison the RS45 will appear to have more contrast because its gamma is still intact. As for 3D, I do agree the contrast is enhanced, but it actually looks a little too contrasty in some scenes...as if it has been enhanced unnaturally.

Originally Posted by mouradb

Just select the user settings you want (User1, User2, ..) either through he remote directly from the menu and then make the changes you want. They will be saved automatically. Only thing you have to save explicitly is the name (if you decide on changing it)

Originally Posted by Fatshaft

johnifehr,

Please guide to where I need go to do what you are doing...in other words, please help me!
I'm completely in awe of smooth motion play...I'll do anything to get this.
where do I need to start?
I play my movies through MPCHC and madvr and ffdshow if that helps.

Thanks,

Originally Posted by coderguy

judder
A subtle stuttering effect that occurs most noticeably during pans and other camera movement with 24-frame sources, such as most Hollywood films and many network TV programs. Can be caused by the native 24-frame rate of film itself, where the stuttering is relatively smooth and regular,
OR by the 2:3 pull-down conversion process used to convert film to video, where the stuttering is more jerky and irregular.

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The above definition is how I always understood it. Notice judder/stutter, same thing according to this definition.
All the word really means is a lack of fluidness, I guess some people have created a new meaning in the video world to mean only when doing pulldown conversion, but I don't think that's how it was generally meant to be used. I am old school going way back, and in the past people have used the word judder to describe any slight loss in fluidity.