New JVC DLA-X75R/DLA-RS56 $7,999 projector with 3D RF glasses and E-shift CEDIA 2012 - Page 7

Thanks Mike, that helps a lot.

Another question that you or someone else can help with.

Ok, say I am going to have a 11' wide screen and use an anamorphic lens, and I want to stay near mid zoom to balance brightness on the one hand, and pin cushion on the other.

When looking at the projector central throw calculator, do I check the throw distance and zoom level by checking 16:9 (56" high / 100" wide), which as I understand it will be the zoomed/focused image, that will then be compressed and then widened by the anamorphic lens.

Or, do should I be looking at the throw distance in the calculator based on 2.35 - 56" high/ 132" wide?

When I use the PC calculator base on 16:9 (100" wide), mid zoom is about 16' (I would probably opt for longer to minimize pin cushion and room placement).

However, when I chance the PC calculator to 2.35 (132" wide), mid zoom winds up being about 21'.

My thinking is that if using an Anamorphic lens then the 16:9 (56" / 100") is what I should be using to get a ball park on the throw distance I can use. Correct?

Nice! Is it made in Japan?
Although not sure how much it matters - my Epson and Panasonic were, and they were sh*t in terms of reliability.

Why would you be sure the 55 or 75 are better if you had issues with the 950?!

I guess because it is a total redesigned chassis and it has been around two years and not a single report of banding. Plus they actually seemed to fix the bulb issues that were from last year, let alone problems from 3 generations ago. Anything would be better than the HD-XXX in my opinion, so I chose to abandon it and move forward. If I get another lemon JVC will not be an option for me, that is for sure.

Hey RS56 owners,

I have a choice to make right now and need some feedback from those of you who own the x75 or RS56. I have a chance to buy either a new 2012 x90/RS65 or a 2013 x75/rs56 for about the same money. I know the x90 had "hand selected optics and parts" as well as a higher contrast ratio of 120,000:1. I also know that the x90 used IR for 3D and was reported to have poor 3D performance.

Any thoughts for you JVC experts??

Thanks!!

Jeff G.

If I was in your shoes I would go with X75/RS56 mainly for the new bulb and power supply. Reports are very good on bulbs maintaining brightness very well and don't seem to be blowing at low hours. Some people were having serious dimming and bulb blowouts on the 2012 units.

If you did go the X90/RS65 route you can use the updated RF emitter and glasses, but there were upgrades on the 2013 models 3D performance which should be considered if 3D is something you are interested in. Unless you have perfect viewing conditions I would say the extra contrast the X90 would give could be easily lost anyways. So I put my vote firmly on the X75/RS56

+1. This is the main reason I would do with the newer models. While it's possible the newer models could also have completely different issues, it was a chance I was willing to take.

Kal
Edited by kal - 3/12/13 at 10:57am

Got my X75 today and tested convergence first thing. Red was off by 1.5 pixels, so I was able to clean it up to only .5 pixel with the per pixel adjust. I was hoping that after all the pain I was through the gods would smile and give me a good sample, or maybe if the convergence was bad it would be at least blue. LOL

All-in-all the picture is still excellent and a big step up from my 950. Gains in brightness, contrast, reduced judder, noise, better CMD and new stuff like 3D and MPC, and that is just noticed in the first hour I had to play with it. Hoping my glasses show up soon and can play with 3D and continue to dial it in with the tools I have available until I either get a meter or two or just get someone in to calibrate. Still haven't decided.

I used the whole fine adjust to alight red and it made all the difference in the world to the clarity and pop of the picture. Have read several post stating that this introduces its own issues and was wondering if anyone could elaborate on this. It made such a large improvement I am sure I am stuck with this. If the induced issues are big enough I might complain to JVC. With my other dealings they seem to be pretty rigid on the "deal with it" stance. Anybody been able to exchange bad samples with JVC before??

I'd like to also see this elaborated upon. I've used the convergence/panel alignment on my RS25 and way back to my old Toshiba rear-projector TV and always found it did nothing but improve the picture.

Only 12 days to go until my X75 gets picked-up.

I think the concern is resolution may be affected. Try looking at both vertical and horizontal line pairs to see if they're being affected.

+1. Throw up the single pixel on/off line patterns from the AVS709 disc and see if it introduces any weird artifacts like Moire. This is the first thing I did with my RS56 after I had used the whole screen shifting function. I had assumed correctly that when shifting the an entire colour over the entire screen that there wouldn't be any issues and there were not.

If you use the zone convergence tweaks then you may see something (not sure how you couldn't as digital is very binary, on/off).

Kal

Thanks guys. I will load up the avs disc and see if any artifacts show themselves. There seems to be moments when I am impress and others where it looks less than stellar using BD disc's such as Skyfall and Wreck It Ralph.

Red panel is way off on both the vertical and horizontal. Sucks.

Its real easy to intrduce coloration when using a single pixel on off pattern. The pattern is analogous to using an analogue square wave pattern.However,when watching real life images the coloration won't be there. The shifting on the on off pattern will happen when you apply scaling to it which is oif course how one applies sub pixel grid shifts. I wouldn't worry about it from a color shift perspective. Subpixel applying up to about a qyarter pexel is OK. More than that and you will start to lose resoltion and focus to a small extent. Many people don;t see it but that is more a reflection of their screen not being able to clearly resolve the pixel due to the screen causing pixel bleed.

Thanks for the explain Mark. The red is out a full half pixel in the horizontal and under quarter pix vertical. Seems if I try to adjust the horizontal is when losses outweigh any gains. I will forget the horizontal and just test to see what shows itself on the avs disc.

Hope you get a good sample Bayne! Mine while not being perfect is a huge jump from the 950. Watched Prometheus last night in 2D and was really stunned by some scenes. Getting my emitter and glasses soon hopefully, and will give 3D a shot

I'm interested in the RS56 if you don't buy it. PM me.

I would be interested in the answer as well. Had the same option and went with the RS56 instead of the RS65 for more money. Liked the idea of the new bulb, better 3D performance, lens memory ETC. The one plus on the RS65 is it comes with the 3D accessories where the RS56 doesn't. Interested to hear any other comments.
Also if anyone can explain what is different to give the RS65 the higher contrast ratio I would be interested in understanding that better. Thanks.

Hi turtletrax

I've got my brand new X75 last week.
I'm very impressed about the picture quality at all ... but my one also has some convergence issues, primarily with red (have to use LensShift 50% downwards).


Using the AVS-HD V1.2b and the 1 pixel wide grid test pattern (the one with the 1 dot in the square center, not the resolution pattern with 1 pixel on/off in a row), I see red is off up to 1 pixel in a wide area of the sceen from the center to the down edge (vertical shifted red) and to the right edge of the screen (horizontal shifted red), and I can see it at 3m distance.

Never being a friend of that, I was forced to use the zone fine correction (1/16 pixel raster).

It needed many hours for getting a perfect convergence of red+blue in H+V by using the fine adjustment, because I did check it on all adjustable positions. But this effort was successful - I'm absolutely surprised about the great result!

First I was afraid in loosing resolution details, or getting some colour effects ... but nothing happened! In addition the conture of objects with a high contrast now are very sharp, because of elimination of that kind of chromatic aberration.

The same 1-pixel wide grid pattern now "appears" as a perfect white grid, also the single dot in the center of the grids is white only - already from a distance of only ~ 0.5m to the screen!

Meanwhile I've done some comparisons by switching the correction on/off, and in combination with eShift on/off, while watching a BR (for example Casino Royal, scene from the St. Mark's Square, because of it's high-resolution details).

In all cases I couldn't see any losses by using the correction set to enabled. Details and color are as they should be. The only test pattern, where I can see influence of the correction, is by displaying the resolution test pattern with 1 pixel on/off (AVS-HD) -> with enabled correction the picture looks red instead of gray (disabled). Interestingly the same pattern again looks gray with enabled eShift in addition (ok, the "grid effect" is low, but still perceptible).

Then I' ve done some experiments with the PC as 1080p source.

Same experiences: Setting the zone corr. at off, the clock in the lower right task bar was looking like a picture for old 3D red/green glasses ... but with the corr. enabled the clock appears really perfect - like having no convergence issue! (could post some shots before/after, if desired)

At least I've fed the PJ with 3D stuff. And again, zone correction did work w/o any perceptible issues.

IMHO the zone correction is a genius and absolutely useful function. I can really live with, because in watching films I can't see any difference to my predecessor PJ (this one had no convergence issue for 90%).


Meanwhile I know a few owners with this PJ generation (X35/55/75), having convergence issues on their units too (more/less), so I'm not complaining to that anymore, because:

a) IMHO it's correctable w/o getting perceptible losses (at least on watching BR's)
b) the entire screen area of my PJ's native sharpness is consistent for ~95%
c) convergence issues unfortunately seem to be quit often in this JVC's PJ generation ... so getting one w/o conv. issues would need a lot of luck ...

(Sorry for my bad english)
Edited by *Harry* - 3/28/13 at 4:39am

Very useful info. Thanks, Harry! I'll be picking up my X75 on Saturday and fully expect to be using some amount of pixel alignment. I'll try and post my impressions early next week.

How much difference is there in image quality between an RS56 and an RS45 ? I'm thinking of upgrading. Is it worth it ?

It's absolutely worth it. I upgraded from an RS45 to an RS56 in January and the picture quality issues I experienced at a "first row" distance with the 45 went away with the 56. The image is noticably sharper whether or not you use eShift. At first, I thought it was just eShift making the difference, but over the last few months I've watched familiar films with and without eShift and the viewing experience is better on the 56.

Everyone we've sold RS56's to have been pleased with this projector's performance. It's a great projector.

Thanks for the comments, guys.

I also have the option to wait and buy a 2014 model. I wonder what JVC has up their sleeve for next year's model.

I sure hope they offer a brighter projector and increase on the already good contrast. I'm sure we will have eshift3 but I wonder if they will offer a true 4k projector and what price it will be. I'm currently using a RS40 and have held off upgrading but this might be the year I upgrade depending on what they offer at the end of the year.

Mike

For all of you, who want to know how good the zone correction of the JVC X75 is working, I've done a few screen shots with and w/o pixel fine adjustment. The "4K Profile" (eShift2) was disabled all the time.

First: Windows taskbar, lower right corner. Here you can see my bad "nativ" convergence:



That's the result with the best possible pixel adjustment:



Now the 1 pixel wide grid pattern of the AVS-HD V1.2b ("Misc Patterns" section).
Cam was on same position as of the taskbar shot.

W/o correction:



And with correction ...



As you can see, the JVC's pixel adjustment is working perfect! There are no losses in details down to the one pixel level ...

Wow, that was off by a pretty good amount. Can you see the offset from seating distance?

This is a highly debated topic.. some claim it reduces resolution / detail, others state that it looks great after the changes.

The desktop results / single pixel test does look convincing vs. the original settings.

The results do look very good indeed!
Strange that so many say it creates more problems than its worth.

Maybe we could hear from those folk again, would like an update on this feature?

Yes, the convergence issue was noticeable from my 3m seating distance to the 2.4m wide 16:9 screen.


But now I see nothing than an ultra sharp clear picture!

In addition I've done 4 shots of a small picture detail section from Casino Royal's St. Mark's Square szene (folks near the bottom right screen corner). Each shot was a different combination between on/off pixel adj. and on/off 4K Profile "Film" with "Enhancement" set to 75.

The result was also pretty convincing, and if you could see the details on the shot with the enabled pixel adjustment + eShift, I'm sure, there would be no doubts left about the JVC's capabilities in that case.

I can only say - now I have really the best picture I've ever seen on my HC screen. I would like to post the 4 shots, but I think that's not allowed concerning the copyright laws.

But if anyone know where I could ask for authorization, please let me know.

You don't set Enhancement to 75 for normal viewing do you?

People post screen shots of movies all the time Harry - go for it !