JVC DLA-RS1000/N5 & RS2000/NX7 Owners Thread

[Dylan Seeger]

I have the JVC 2000 and I was wondering if 3840x2160 was the maximum resolution or can the projector give out
4096x2160?

The panels are true 4K (4096 x 2160). The projector will accept and correctly display a true 4K image.

[ed weinman]

The panels are true 4K (4096 x 2160). The projector will accept and correctly display a true 4K image.

What sources can result in the JVC's showing them in 4096x2160?

[AVSCraig]

What sources can result in the JVC's showing them in 4096x2160?

As far as I know, a Lumagen Radiance Pro or home theater pc outputting 4096 x 2160. I'm using a Lumagen to do that for scope movies with my Panamorph DCR lens.

[AVSMike]

I have the JVC 2000 and I was wondering if 3840x2160 was the maximum resolution or can the projector give out
4096x2160?

All of the true native 4K projectors are actually 4096 x 2160. Those would be the JVC and Sony native 4K projectors.

[ed weinman]

All of the true native 4K projectors are actually 4096 x 2160. Those would be the JVC and Sony native 4K projectors.

So, are there any ROKU/4k DVDs that would project at this resolution?

[AVSMike]

So, are there any ROKU/4k DVDs that would project at this resolution?

No, but no need to. The Sony/JVC projector and DCR lens resizes the scope 3840 x 2160 to 4096 x 2160. It does this so that you are using the full width of the 17:9 panel and gain 7% light output. If you add a Lumagen, it will do the scaling for you and do a better job than the projector. On top of that, you get great HDR tone mapping.

[stridsvognen]

But you loos your 1:1 pixel mapping wich is a very powerfull thing if you care about the best possible image quality, and its a fairly odd scaling, nothing like a 1080 to 2160, wich is much more straight forward.

And what kind of effect do the extra lens have on the ansi contrast, wich JVC never had any to spare.? What you measure with and without the extra optics in the light path.?

I see the 7% adds up with about the extra amount of pixels, but whats the light loss in the DCR lens.?

[AVSCraig]

But you loos your 1:1 pixel mapping wich is a very powerfull thing if you care about the best possible image quality, and its a fairly odd scaling, nothing like a 1080 to 2160, wich is much more straight forward.

And what kind of effect do the extra lens have on the ansi contrast, wich JVC never had any to spare.? What you measure with and without the extra optics in the light path.?

I see the 7% adds up with about the extra amount of pixels, but whats the light loss in the DCR lens.?

When all is said and done, I measure an extra 38% light with the lens. Buy a DCR lens and test it yourself. As for 1:1 pixel mapping, everyone that has seen the lens in my theater says the image is better with the lens. Everyone. 

[ed weinman]

No, but no need to. The Sony/JVC projector and DCR lens resizes the scope 3840 x 2160 to 4096 x 2160. It does this so that you are using the full width of the 17:9 panel and gain 7% light output. If you add a Lumagen, it will do the scaling for you and do a better job than the projector. On top of that, you get great HDR tone mapping.

Thanks, Mike

Why does the JVC remote show the scope at 3840x2160 rather than 4096x2160?

[AVSMike]

But you loos your 1:1 pixel mapping wich is a very powerfull thing if you care about the best possible image quality, and its a fairly odd scaling, nothing like a 1080 to 2160, wich is much more straight forward.

And what kind of effect do the extra lens have on the ansi contrast, wich JVC never had any to spare.? What you measure with and without the extra optics in the light path.?

I see the 7% adds up with about the extra amount of pixels, but whats the light loss in the DCR lens.?

People have compared and could not tell any loss of sharpness. Definitely a healthy bump in brightness, around 30% to 35% increase.

[stridsvognen]

When all is said and done, I measure an extra 38% light with the lens. Buy a DCR lens and test it yourself. As for 1:1 pixel mapping, everyone that has seen the lens in my theater says the image is better with the lens. Everyone.

"" DCR lens resizes the scope 3840 x 2160 to 4096 x 2160.""

I think you got confused we are talking about the UHD to 4K resolution step that is about 7% more pixels, and looking for the Specs on the DCR lenses there is no specs, just advertising material, so would be nice if someone with a professional aproach could help cover some of the basic facts.
No optical path goes without loosing light, and its hard to combine low light loss with good antireflective properties, so somewhere somehow a compromise is made, the question is how is that balanced in the DCR lenses.
It should be fairly simple for someone with decent calibration qualifications to take a ansi contrast measurement and get a with and without DCR lens, and maybe measure or get some specs of the transparency of the lens/ light loss true the optics.
Ill surely not buy a 6000+$ lens to find out, as i think thats what a forum comunity is all about, .. Helping enlightening each other to make the right choices based on objective facts, as your subjective opinion dont apply to everybody.

[stridsvognen]

People have compared and could not tell any loss of sharpness. Definitely a healthy bump in brightness, around 30% to 35% increase.

Some good screenshots of test material, like sharpness patterns would tell more than 1000 words.

[AVSMike]

Some good screenshots of test material, like sharpness patterns would tell more than 1000 words.

Send Chris Deering a PM about it. He has compared and owns a DCR lens.

[stridsvognen]

Send Chris Deering a PM about it. He has compared and owns a DCR lens.

Seems we have DCR owners represented right here, and would be interesting to see if its realy worth the extra money on top of a JVC RS2000 or the money is better spend on a brighter projector.
Also what kind of screen size do you need before you have to compromise your 1:1 pixel mapping, and add scaling noise to gain more lightoutput. We just need some objective data instead of the subjective opinions.

Nobody here with calibration qualifications and a DCR lens on a JVC RS1000/RS2000?

And what do you guys then do when running a 16:9 movie, or any of the other like 1.85:1 formats ? Do you remove the lens or also scaling those and keep the vertical screen size.?

[David Vaughn]

Send Chris Deering a PM about it. He has compared and owns a DCR lens.

Kris Deering