Official JVC DILA-X500R / RS49U / RS4910U Owners Thread - Page 74 - AVS Forum
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post #2191 of 2203 Old Yesterday, 02:35 PM
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Originally Posted by twinturboaudi View Post
A little late to the party but I just bought a 4910u and am currently waiting for it arrive. It's replacing an Epson 8500ub that has served me well for the past 4 years. I find it's time to go to the next level and waiting for 4k to be affordable is becoming tiresome. Mainly I'm hoping for much improved black levels and a tighter pixel grid, which it seems by what I've read, is what I'll be getting.
Oh you'll get that and MUCH more the two are not in the same league. I had an 8100 before going to an rs40 and now a 4910. Totally different animal.
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post #2192 of 2203 Old Yesterday, 02:43 PM
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Originally Posted by curlyjive View Post
Oh you'll get that and MUCH more the two are not in the same league. I had an 8100 before going to an rs40 and now a 4910. Totally different animal.
Definitely what I'm hoping for. A massive jump in performance. Watching my Panasonic 60vt60 has spoiled the hell out of me with it's black levels.
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post #2193 of 2203 Old Yesterday, 02:51 PM
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Originally Posted by Jimmie48 View Post
I have a question about the digital Keystone correction. My installer had to move my projector off center a foot or so with a 13ft throw and mentioned that I could correct some vertical line issues using the digital keystone feature. Will this impact the image at all if I move it a tick or two? The only way I can look at it is using the shift grid and see the vertical lines. I can tell that the upper corners are a little wider than the lower so if I correct it using keystone it looks straight. I just would rather a small variance than sacrificing image quality. Thanks for all you experts' help.
Sounds like it's vertically off-center and the PJ is no longer square to the screen. It would be better to square the PJ and use the lens shift to center the image. Provided the shift range is sufficient, this will give a better image than using digital keystone, as any image scaling (which is what digital keystone is) invariably degrades the image (though how much is debatable).

If the range of lens shift is insufficient and you are forced to tilt the PJ, it's still preferable to allow a little bit of keystone and hide that in the black velvet border of the screen.

Also if your installer did not understand this, I'd look for a new installer.
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post #2194 of 2203 Old Yesterday, 02:57 PM
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Quote:
Originally Posted by twinturboaudi View Post
A little late to the party but I just bought a 4910u and am currently waiting for it arrive. It's replacing an Epson 8500ub that has served me well for the past 4 years. I find it's time to go to the next level and waiting for 4k to be affordable is becoming tiresome. Mainly I'm hoping for much improved black levels and a tighter pixel grid, which it seems by what I've read, is what I'll be getting.

I have seen the Epson 5030 and find the JVC to be a step up, I am sure you will be very happy.

James Reid:D
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post #2195 of 2203 Old Yesterday, 03:03 PM
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Originally Posted by cardoski View Post
I have seen the Epson 5030 and find the JVC to be a step up, I am sure you will be very happy.

The 4910 costs more than the 5030, and IMO you do get more for that money. Hard to beat the 4910 picture wise for the price.

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post #2196 of 2203 Old Yesterday, 03:24 PM
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Originally Posted by curlyjive View Post
What you are describing sounds like an alignment problem. You would be better off adjusting the alignment of the pj to the screen to fix this. Do not use keystone correction as it will degrade the image.

Because of the ceiling studs not being in the center of the room horizontally we had to move it about a foot off center. I cannot move it now that it has been installed and mounted. We couldnt do the electrical also because of this reason. At any rate I will see how it looks without the keystone on and make a judgement call. What kind of effect does it have on PQ if I turn it on? What should I be looking for specifically?
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post #2197 of 2203 Old Yesterday, 03:41 PM
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You should be able to adjust this by tilting the pj up or down. Having to mount the pj to the left or right is what lens shift is meant for. If your top or bottom is larger, tilting the pj up or down should fix that. You don't need to remount or move the pj.

Are the upper corners equally wider on both sides? If so tilt the pj down a bit so the lens is in the same plane as the screen. Use lens shift to bring the image back up.

Keystone should always be a last resort.

Last edited by curlyjive; Yesterday at 04:43 PM. Reason: Typo
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post #2198 of 2203 Old Yesterday, 04:32 PM
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Originally Posted by curlyjive View Post
Lens shift should always be a last resort.
I would say the digital keystone is the last resort, only if the problem cannot be solved with either moving/rotating/tilting the PJ, or lens shift as a second resort.
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post #2199 of 2203 Old Yesterday, 04:42 PM
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Originally Posted by ScottJ View Post
I would say the digital keystone is the last resort, only if the problem cannot be solved with either moving/rotating/tilting the PJ, or lens shift as a second resort.
Sorry, that should have said keystone not lens shift. I'll fix my typo.
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post #2200 of 2203 Old Yesterday, 07:52 PM
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So if the projector is moved to the left the right side upper corner of the screen seems larger than the left which makes sense due to the slight angle. How can I resolve that without moving the projector or using keystone? Thanks all
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post #2201 of 2203 Old Yesterday, 07:57 PM
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Originally Posted by BrutaleZEN View Post
Thx seanbryan,

Yes I have a Darblet in the loop. Will try to remove it. Such a shame, meaning I cannot use the Darblet with the JVC ?

Also, i have a problem when playing the Hobbit 3D on my Oppo 103D. The screen goes black every so often. It is displaying 1080p 24 (FP) when it goes on again. What is FP ?

It is fine when I play a 2D movie.

Appart of that, the picture is really good.
It is harder to send 3D than it is 2D. I think you are near your HDMI limits with 2D and when you go to 3D, you are on the very edge, so sync comes and goes.

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post #2202 of 2203 Old Yesterday, 09:29 PM
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Dear Mike Garrett:

You took thousands of dollars from me. Thousands. You didn't apologize - you just sent me a projector and thought it would make up for taking my money. I already have several projectors. What you did makes no sense - especially to my girlfriend.

I want my thousands of dollars back - but I don't want to send you back this JVC RS4910U that is throwing a glorious image on my 176" scope screen. I mean really glorious. I assume you won't agree to refund my money unless I return the projector, so I'm keeping it.

Knowing you, you'll probably pull this crap on me again in a few years with another projector.

drat.

Sincerely,

Chris

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-From a post on the audio video improvements forum
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post #2203 of 2203 Old Today, 06:29 AM
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Originally Posted by chrisreeves View Post
Dear Mike Garrett:

You took thousands of dollars from me. Thousands. You didn't apologize - you just sent me a projector and thought it would make up for taking my money. I already have several projectors. What you did makes no sense - especially to my girlfriend.

I want my thousands of dollars back - but I don't want to send you back this JVC RS4910U that is throwing a glorious image on my 176" scope screen. I mean really glorious. I assume you won't agree to refund my money unless I return the projector, so I'm keeping it.

Knowing you, you'll probably pull this crap on me again in a few years with another projector.

drat.

Sincerely,

Chris
I sincerely apologize to your girlfriend. Looking forward to having to apologize to her again.

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