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Official JVC DLA-RS46 / DLA-X35 owners thread - Page 47

post #1381 of 2080
Quote:
Originally Posted by AV Science Sales 5 View Post

Something is not right. You state that you are using 40" + of vertical lens shift. If you screen is 120" diagonal 16:9, then the max available vertical lens shift is 17". If you have a 120" wide 16:9 screen, then the max available vertical lens shift is 20". 40" of vertical lens shift is impossible, so if you do have the image 40" below lens center, then the projector is not set up properly.

So a 120” 16:9 screen has a vertical dimension of 58.8”. When I turned the projector on the first time all but about 15-20” (estimate) of the image were on the screen, the remainder of the image was above the screen and on the ceiling. So When I say 40” of vertical shift I mean that I shifted the image from where the bottom of the image was at default to where it needed to be on my screen. Of course now that I recall I hadn’t messed with the image size/zoom until after shifting the image down. So I literally shifted the smaller (maybe a 60” diagonal unzoomed image) down until the top of the image was at the top of my screen, I then zoomed in which of course pushed the bottom of the image further towards the bottom of the screen as the image filled the screen. So my mistake, 40” shift downward was incorrect. But I’ve still shifted the image downward quite a bit. Would that cause the image on my screen to be out of focus on the periphery when I’ve focused the center of the image? This never happened with my RS45. But let’s say that the downward shift would cause this, would tilting the projector forward slightly using the retractable feet on the bottom of the RS46 and then using less downward shift alleviate the issue?

 

 
post #1382 of 2080
Quote:
Originally Posted by Dreamliner View Post

I had great difficulty choosing between a JVC RS46 and Panasonic AE8000. They are close in price but this was a secondary concern. I was reasonably satisfied with my previous AE7000 but was extremely disappointed in Panasonic's warranty service. I was able to have both the AE8000 and RS46 together to compare.

...

nice comparison. the way I see it, the jvc wins by a landslide though. seems like all the 'issues' with the jvc are not noticed on the panny because of worse performance.

ie, would the jvc have just as little SDE if you adjusted it so it was out of focus and not as 'clear' like the panny?
would you ever notice the light leak, or 'smearing' if the jvc wasn't able to get so black?

for what it's worth to others, Dreamliner did ask me if I noticed any of the light leak in a pm, I had not, but with further checking I was able to detect exactly what he pictured and described. the big difference being though, I never noticed it without trying, and I didn't find it the least bit annoying even after finding it. so while masking would definitely be recommended, I don't think it's necessary for everybody. I watched the dark knight with my x35 zoomed out so I had the image on the center of my screen with plenty of 'blank' screen on the sides and the 'leaking' was never enough to distract me from the movie
post #1383 of 2080
Quote:
Originally Posted by fierce_gt View Post

for what it's worth to others, Dreamliner did ask me if I noticed any of the light leak in a pm, I had not, but with further checking I was able to detect exactly what he pictured and described. the big difference being though, I never noticed it without trying, and I didn't find it the least bit annoying even after finding it. so while masking would definitely be recommended, I don't think it's necessary for everybody. I watched the dark knight with my x35 zoomed out so I had the image on the center of my screen with plenty of 'blank' screen on the sides and the 'leaking' was never enough to distract me from the movie

How about the vertical smearing/streaking? Is yours better, same, or worse? Just wondering if there are any lucky JVC units that don't have that issue at all or if it's inherent to their design.

To be fair, I've also seen this artifact on at least 1 Sony SXRD unit.
post #1384 of 2080
What vertical smearing/streaking? What does it look like?
post #1385 of 2080
Quote:
Originally Posted by Wizziwig View Post

How about the vertical smearing/streaking? Is yours better, same, or worse? Just wondering if there are any lucky JVC units that don't have that issue at all or if it's inherent to their design.

To be fair, I've also seen this artifact on at least 1 Sony SXRD unit.

My X55R doesn't have this issue at all. The issue varies unit to unit and gets worse the more lens shift one is using. I don't use any horizontal lens shift and a very small amount of vertical shift from dead center which is probably why I don't have the issue.
post #1386 of 2080
Quote:
Originally Posted by Wizziwig View Post

How about the vertical smearing/streaking? Is yours better, same, or worse? Just wondering if there are any lucky JVC units that don't have that issue at all or if it's inherent to their design.

To be fair, I've also seen this artifact on at least 1 Sony SXRD unit.

i'll have to check. i haven't noticed any though. i do suspect the amount of zoom and lens shift plays a large role on this(and the light scatter). for me to have any screen for the light to 'bleed' onto, i need to be at min zoom(max throw) and at that point, the light bleed/scatter is hardly noticeable at all. i need to wait on a solid black screen for about 2mins and wait for my eyes to adjust enough. literally ANY content on screen, including credits, is enough for me to not be able to detect the light scattered off frame.

i am however, using almost the maximum lens shift available. i know i ran into the issue of not being able to lower the image enough because i was using too much horizontal shift, so i had to physically lower my projector about 2 inches.

i'll check to see if i notice anything tonight and report back what i find. but right now, i'm pretty confident in saying these issues are minor, and way less distracting that blacks being grey.
Edited by fierce_gt - 11/15/13 at 9:30am
post #1387 of 2080
I think you could be right as I've never come across the light bleed issue or vertical streaking despite me using a fair amount of vertical lens shift (no horizontal) but critically I'm using no zoom at all, so perhaps that's what makes the difference.

Having said that, I'm not going to go out and start looking for issues like light bleed, though I think it would have been apparent if mine was effected as I use a 2.35:1 screen and have only recently sorted out some 'Heath Robinson' type side masking.
post #1388 of 2080
Quote:
Originally Posted by mijotter View Post

What vertical smearing/streaking? What does it look like?

Look at the picture posted on the previous page of this thread:

http://www.avsforum.com/t/1442525/official-jvc-dla-rs46-dla-x35-owners-thread/1350#post_23941594

It's the black screen with the "Pause" icon. Labeled "Black with Pause Button (Notice vertical 'smearing' on JVC)"

It appears like the bright pixels are streaking above and below the bright icon. Same can be noticed on movie credits, flashlights in dark movies, etc.

Glad to hear that not all JVC units are affected by this although I'm 2 for 2 on the ones I checked. Lens shift didn't seem to help streaking but it did move some other internal reflections off-screen.
post #1389 of 2080
has anyone used the network input on x35 together with APP remote function?
post #1390 of 2080
I tried to reproduce some kind of light streaking on my jvc but was not able to. if it's there, is ridiculously faint and I can't see it in my room on my screen.

the light bleed off screen is super faint too. so i'm not surprised most ppl aren't able to see it. like I said, even after going out of my way to notice that it's there, it's really 'not there' under any normal viewing conditions for me.
post #1391 of 2080
Quote:
Originally Posted by sk576c View Post

So a 120” 16:9 screen has a vertical dimension of 58.8”. When I turned the projector on the first time all but about 15-20” (estimate) of the image were on the screen, the remainder of the image was above the screen and on the ceiling. So When I say 40” of vertical shift I mean that I shifted the image from where the bottom of the image was at default to where it needed to be on my screen. Of course now that I recall I hadn’t messed with the image size/zoom until after shifting the image down. So I literally shifted the smaller (maybe a 60” diagonal unzoomed image) down until the top of the image was at the top of my screen, I then zoomed in which of course pushed the bottom of the image further towards the bottom of the screen as the image filled the screen. So my mistake, 40” shift downward was incorrect. But I’ve still shifted the image downward quite a bit. Would that cause the image on my screen to be out of focus on the periphery when I’ve focused the center of the image? This never happened with my RS45. But let’s say that the downward shift would cause this, would tilting the projector forward slightly using the retractable feet on the bottom of the RS46 and then using less downward shift alleviate the issue?

 

 


Reduce the image size so that it is 1/4" smaller than your screen. Do all four sides of the image parallel with the screen frame, I suspect not. Until you get the image completely square with the screen, it is hard to tell what if any problem you have.
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post #1392 of 2080
Quote:
Originally Posted by fierce_gt View Post

I tried to reproduce some kind of light streaking on my jvc but was not able to. if it's there, is ridiculously faint and I can't see it in my room on my screen.

the light bleed off screen is super faint too. so i'm not surprised most ppl aren't able to see it. like I said, even after going out of my way to notice that it's there, it's really 'not there' under any normal viewing conditions for me.

Star Trek is A good one to show the JVC Streaking thing, like shots when there on the enterprise command Bridge with all the lights "n" flashing lights..
all JVCs suffer from it but who really care's once you factor the bang for Bucks cost/performance that is..

Its prob A different storey if A 20K + projector suffered from it but nothing is perfect smile.gif ..
post #1393 of 2080
Quote:
Originally Posted by cinema mad View Post

Star Trek is A good one to show the JVC Streaking thing, like shots when there on the enterprise command Bridge with all the lights "n" flashing lights..
all JVCs suffer from it but who really care's once you factor the bang for Bucks cost/performance that is..

Its prob A different storey if A 20K + projector suffered from it but nothing is perfect smile.gif ..

I've watched both new star trek's on the jvc, and never noticed such a thing happening. is it normally obvious, or is this the kind of think you need to pause content, break out the magnifying glass, and go hunting for...?

if it's not noticeable, is it really a 'problem'? haha. the projector certainly isn't perfect, but that wouldn't even make my wish list if I was ordering upgrades right now. better motion, more lens shift, and lower input lag would top my list, with darker blacks always being welcomed too smile.gif
post #1394 of 2080
Sounds like he's making a joke about JJ Abrams' excessive use of lens flares.
post #1395 of 2080
Quote:
Originally Posted by cinema mad View Post

Star Trek is A good one to show the JVC Streaking thing, like shots when there on the enterprise command Bridge with all the lights "n" flashing lights..
all JVCs suffer from it but who really care's once you factor the bang for Bucks cost/performance that is..

Its prob A different storey if A 20K + projector suffered from it but nothing is perfect smile.gif ..

Not all JVCs suffer from it. I even tried using a ton of lens shift which seems to exacerbate it on projectors that have the issue. I saw no difference and I was looking for it standing up close to the screen within a few feet. It seems to be there on *some* units, but not all. As fierce_gt said, he doesn't see anything either.
post #1396 of 2080
I ren
Quote:
Originally Posted by fightclub View Post

has anyone used the network input on x35 together with APP remote function?

I set mine up about three weeks ago on my RS46 and started playing around with the JVC app a little on my iPhone but then this past week I tried to use the app to turn on the projector and it would not connect. I just haven't had the time to try to trouble shoot it yet to see what the issue is... When I originally set it up it worked fine though.
post #1397 of 2080
Quote:
Originally Posted by seanbryan View Post

Sounds like he's making a joke about JJ Abrams' excessive use of lens flares.
biggrin.gif ha ha, na Guy's I was being serious..
I am happy with my JVC all the same, coming from the old high end Liquid coupled CRT Projectors, lens flare is something that stood out with the JVC's..
post #1398 of 2080
Guys, I'm on the verge of maybe ordering as JVC RS-46 as my first ever projector ..

I love its picture quality, but its brightness thing scare me ..

I don't want a situation to arise where I say "What if .. ?", regarding the brightness of JVC's 2D output .. Brightness isn't its best point, supposedly.

So I'm a little scared that I might find it a little dim, maybe ? Is this something to be worried about ?

My throw distance will be about 18 feet, and the screen is 120" 16:9 ... Room is 95% light controlled ..

So is there any chance I could end up wanting more brightness, with a JVC RS-46 ? redface.gif

Low brightness for 3D isn't an issue though, because for 3D I'll use another projector ..
post #1399 of 2080
Quote:
Guys, I'm on the verge of maybe ordering as JVC RS-46 as my first ever projector ..

I love its picture quality, but its brightness thing scare me ..

I don't want a situation to arise where I say "What if .. ?", regarding the brightness of JVC's 2D output .. Brightness isn't its best point, supposedly.

So I'm a little scared that I might find it a little dim, maybe ? Is this something to be worried about ?

My throw distance will be about 18 feet, and the screen is 120" 16:9 ... Room is 95% light controlled ..

So is there any chance I could end up wanting more brightness, with a JVC RS-46 ? redface.gif

Low brightness for 3D isn't an issue though, because for 3D I'll use another projector ..

With a 110" 1.3 gain screen you would have almost 18 foot lamberts in low lamp with 496 lumens -
http://www.projectorreviews.com/jvc/dla-x35/performance.php

With a 120" diagonal 1.3 gain screen - 14.71 foot lamberts.

I'd either go with a 110" screen or a High Power screen if you want a bigger screen.
post #1400 of 2080
Quote:
Originally Posted by ahmadka View Post

Guys, I'm on the verge of maybe ordering as JVC RS-46 as my first ever projector ..

I love its picture quality, but its brightness thing scare me ..

I don't want a situation to arise where I say "What if .. ?", regarding the brightness of JVC's 2D output .. Brightness isn't its best point, supposedly.

So I'm a little scared that I might find it a little dim, maybe ? Is this something to be worried about ?

My throw distance will be about 18 feet, and the screen is 120" 16:9 ... Room is 95% light controlled ..

So is there any chance I could end up wanting more brightness, with a JVC RS-46 ? redface.gif

Low brightness for 3D isn't an issue though, because for 3D I'll use another projector ..

I am in full agreement with Craig. But I want to verify if 120 inches is your diagonal or is it your width? Do you already have your screen and if so what is its gain. You should give Craig a call. He knows his stuff and is the right person to advice you on a screen if you don't already have one and I think you will like his prices. Some screens like the Da-lite HP 2.4 he mentioned have special projector mounting height considerations to maximize its gain.
post #1401 of 2080
Quote:
Originally Posted by Craig Peer View Post

With a 110" 1.3 gain screen you would have almost 18 foot lamberts in low lamp with 496 lumens -
http://www.projectorreviews.com/jvc/dla-x35/performance.php

With a 120" diagonal 1.3 gain screen - 14.71 foot lamberts.

I'd either go with a 110" screen or a High Power screen if you want a bigger screen.

I don't think I can go smaller than 120" because then it will look really small, given the specs of my room ..

Also, I intend to share whatever screen I get with a budget Optoma projector for its 3D .. So I fear that a 1.3 gain screen might make it too bright for this second projector .. frown.gif

Technically though, I'll only be using the budget Optoma projector for 3D viewing and for occasional gaming .. And I normally prefer to game with the lights on .. This might change though once I get a projector cool.gif

So what do you suggest ?

Quote:
Originally Posted by mark haflich View Post

I am in full agreement with Craig. But I want to verify if 120 inches is your diagonal or is it your width? Do you already have your screen and if so what is its gain. You should give Craig a call. He knows his stuff and is the right person to advice you on a screen if you don't already have one and I think you will like his prices. Some screens like the Da-lite HP 2.4 he mentioned have special projector mounting height considerations to maximize its gain.

120" is the diagonal length of the 16:9 screen I'm thinking of .. Currently I haven't purchased anything .. Yes I'll definitely give Craig a call once I know what I want rolleyes.gif
post #1402 of 2080
Quote:
I don't think I can go smaller than 120" because then it will look really small, given the specs of my room ..

Also, I intend to share whatever screen I get with a budget Optoma projector for its 3D .. So I fear that a 1.3 gain screen might make it too bright for this second projector ..

As far as I'm concerned there is no such thing as " too bright a projector " ( that most of us can afford anyway ). Go with a 1.3 gain 120" diagonal screen, watch using low lamp power until it gets too dim for your tastes, then switch to high lamp power. Just plan on changing lamps a bit more often. It's like having a high performance sports car - when you need new tires, you just get new tires.
Quote:
So I'm a little scared that I might find it a little dim, maybe ? Is this something to be worried about ?
No - you just need to be aware of the limitations, have realistic expectations, and change lamps more often perhaps. Or line your theater with black velvet like Mark !! wink.gif
post #1403 of 2080
Black Guilford cloth covering the walls which are acoustically treated every sq inch under the cloth. Use a little Protec on flying speaker bottoms and the black ceiling grid which is a little shinny without the Protec.

And the black doesn't reduce the amount of Lumens you need. Its not an either or. The brighter the picture the more light will reflect back of of non reflective walls and ceilings to wash low level blacks out.
post #1404 of 2080
Pls note projector central calculator on jvc x35 brightness is a suspicious data and could not be used for comparison.
post #1405 of 2080
Quote:
Originally Posted by fightclub View Post

Pls note projector central calculator on jvc x35 brightness is a suspicious data and could not be used for comparison.

So what's the best way to most suitable screen, without actually buying them all and trying them out tongue.gif
post #1406 of 2080
Quote:
Originally Posted by mark haflich View Post

Black Guilford cloth covering the walls which are acoustically treated every sq inch under the cloth. Use a little Protec on flying speaker bottoms and the black ceiling grid which is a little shinny without the Protec.

And the black doesn't reduce the amount of Lumens you need. Its not an either or. The brighter the picture the more light will reflect back of of non reflective walls and ceilings to wash low level blacks out.

My room's walls are currently all white, so this is a good point, but what's Black Guilford, Protec, and 'flying speaker bottoms' ? .. Google didn't help tongue.gif

And instead of making all these changes, how about just getting a screen which rejects ambient light ?
post #1407 of 2080
post #1408 of 2080
Quote:
Originally Posted by ahmadka View Post

My room's walls are currently all white, so this is a good point, but what's Black Guilford, Protec, and 'flying speaker bottoms' ? .. Google didn't help tongue.gif

And instead of making all these changes, how about just getting a screen which rejects ambient light ?

White walls are a nightmare to be honest, and much has already been said about the issue, including by me, several posts pack.

The short story is:

Reflected light will wash out the blacks, to the extent of the average picture level of the scene. Dealing with Ambient light is much easier, because you can raise the black level in your calibrations (or more basic settings), to account for the consistently elevated black levels. Depending on the choice of screen, this can result in some really good pictures, although obviously nothing beats a truly dark environment.

Calibrating for reflected light is basically impossible, because the elevated black level from the reflections is constantly changing, and with white walls, this will be changing A LOT, and will also be reflecting A LOT. You could potentially calibrate for this, by raising your black level to account for perhaps a 30% average picture level, but your contrast ratio with white walls will be around 50:1 if you do this, and that's really not an acceptable solution.

My situation is perhaps similar to yours... I watch at night, in a room that is nearly completely black (with the JVC's image blanked, I can see shadows on my screen), but I have white walls, cream carpet and a cream sofa. I was looking for a screen to help with this situation, because I can't paint the walls, and I've basically failed to find a solution. I found screens that handle ambient light very well, and I'm confident that I could calibrate a really nice picture with them, but that's not my situation. The side effect of these screens is also a reduced viewing cone, and sparkles or shimmers as the screen tries to add gain; compromises that I'd rather not make. I found that I was able to increase my ANSI contrast ratio (50% picture level) to about 70:1 with the best screen and white walls, which isn't a great improvement, and the black level is still all over the place!

In the end, I've now gone for black curtains that I pull out to cover a large portion of the side walls, and I've also added a very short (~18") section above the screen, a bit like a roof. The result is a much much more stable black level, and a contrast ratio on my unity gain white screen that exceeds the best screens I tested!

If you must have a screen that rejects reflected light, you'll need to find one that is 'retro-reflective' which means that it reflects light back mostly in the direction from which it came. You'll need to be careful with the placement of your projector, and these types of screens are $$$$$!
post #1409 of 2080
Who's projector has a bit of electronic whine?

I've got a bit of electronic wine (high pitch noise, "dog whistle-esk") when I first turn it on, after a few minutes it goes way (you've got to be pretty close to hear it). Should I be concerned at all?
post #1410 of 2080
although i have not bought x35 yet, i have become a fan for this model. Maybe this is old news here, JVC confirms to have one firmware update for x35 to include CMS and auto adjustment software capability. Hope this is helpful.
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