JVC RS45 internal stretch? - AVS Forum
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post #1 of 23 Old 03-17-2012, 10:33 PM - Thread Starter
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OK, so I believe I have narrowed down my projector selection to the JVC RS45.

As of right now, (still in room build process) I am planning a Carada 1.4 gain 112" 2:35 screen, projector lens will be about 17.5' from screen.

Now on to the question. I am fairly certain that I want to use a lens and if I come onto a great deal I will get one (possibly used), so....

Does anyone know for sure if the RS45 will do the vertical stretch to loose the black bars before shooting it through a lens?

I need to know if an external scaler is going to be needed with this set up. Thanks in advance.
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post #2 of 23 Old 03-18-2012, 07:15 AM
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Yes it does. See this link, which includes a link to the user manual.
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post #3 of 23 Old 03-18-2012, 07:20 PM
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Does it stretch non 1.78:1 3D content?
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post #4 of 23 Old 03-19-2012, 04:28 PM
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Quote:
Originally Posted by Seegs108 View Post

Does it stretch non 1.78:1 3D content?

Letter boxed "Scope" program is technically 1.78:1 because the black bars are part of the image (hard encoded) which is made up of 1920 x 1080 pixels even though the watchable portion is still only 1920 x 810 (approx). Older 4x3 transfers will be up-converted to 16:9 in you BD player.

The JVC will then be able to VS or HS your program. To HS you will need to use 4x3 mode.

JAVA enhanced 3D discs may still be a problem to which the Radiance Mini 3D seems to be the only solution.

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post #5 of 23 Old 03-19-2012, 05:25 PM
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Quote:
Originally Posted by CAVX View Post

JAVA enhanced 3D discs may still be a problem to which the Radiance Mini 3D seems to be the only solution.

That's more of the problem with the player, bluray players such as The Oppo 93 cannot scale 3D content with Java.

I believe the JVC RS45 does allow V-stretch for 2.35:1 content in 3D, in fact it has been advertised to do so.

Quote:


From Projectorreviews.com

Anamorphic Lens

JVC offers an anamorphic lens and motorized sled for the JVC DLA-RS45. JVC recommends a Panamorph lens, and sled.

A motorized sled is optional as there is a second anamorphic mode designed to let you watch 16:9 and 4:3, with the anamorphic lens set permanently in front of the lens. This saves on the expense of the motorized sled.

Note, still another way to enjoy the benefits of a widescreen for movies, is with a lens memory feature. With this feature, you can own a 2.35:1 or 2.4:1 screen, and at a touch of a button, fill the screen with your movie, then, one more touch later, and the projector zooms in, and reshifts to fill the vertical of the screen with your 16:9 content, with the letterbox to the left and right. Three ways to choose, but with lens memory, no expensive extra accessories. (However, using an anamorphic lens does provide higher actual resolution).

Of particular note, the JVC supports use of an anamorphic lens in 3D mode. That's a nice touch that most others have skipped. It's not a really big advantage as it won't come in handy very often. Seems very few 3D movies or other content come in 2.35:1 (or one of the other Cinemascope aspect ratios). Of my collection of perhaps 35 3D titles, I think only Monster House, and one other is widescreen, the rest, all 16:9. Well, in case the movie Hugo comes out in 3D Cinemascope shape, that alone will be great for those using an anamorphic lens

One note, the JVC RS40 model will only stretch for 2D content and will require a Radiance 3D mini or a Lumagen scaler than can V-stretch in 3D.
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post #6 of 23 Old 03-20-2012, 12:52 AM
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Quote:
Originally Posted by Trogdor2010 View Post

That's more of the problem with the player, bluray players such as The Oppo 93 cannot scale 3D content with Java.

I believe the JVC RS45 does allow V-stretch for 2.35:1 content in 3D, in fact it has been advertised to do so.

Not seen this yet, so only going by what I am reading.



Quote:


One note, the JVC RS40 model will only stretch for 2D content and will require a Radiance 3D mini or a Lumagen scaler than can V-stretch in 3D.

The Radiance will stretch everything regardless.

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post #7 of 23 Old 03-20-2012, 10:35 AM
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Have not tried it yet don't have a 3d player yet but the 45 has the scaling built in and suppose to work with 3d. I have an edge that used to scale now will be removing it since its all in the projector.

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post #8 of 23 Old 04-03-2012, 03:52 PM
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Just to confirm, yes the RS 45 will Verticaly Stretch and Horizontaly Compress 3D content (although the 3D on the RS45 is pretty bad IMHO). For reference, I use an RS45 with the XEIT Anamorphic lens.

Cheers!
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post #9 of 23 Old 04-03-2012, 04:51 PM
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At CES all their current probers scaled properly with the Panamorph lens permanently attached. I have the older 40 and I have to use my Oppo to scaled 3D 2.35 content. I have a problem with java based blurays like Shrek 4.
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post #10 of 23 Old 04-06-2012, 10:11 AM
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Quote:
Originally Posted by BroncoSport View Post

OK, so I believe I have narrowed down my projector selection to the JVC RS45.

As of right now, (still in room build process) I am planning a Carada 1.4 gain 112" 2:35 screen, projector lens will be about 17.5' from screen.

Now on to the question. I am fairly certain that I want to use a lens and if I come onto a great deal I will get one (possibly used), so....

Does anyone know for sure if the RS45 will do the vertical stretch to loose the black bars before shooting it through a lens?

I need to know if an external scaler is going to be needed with this set up. Thanks in advance.

That yields a 2.45x throw (assuming 112" wide), which is in the range of the RS45. Seeing you already have a lens, you should be good to go.

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post #11 of 23 Old 04-06-2012, 11:20 AM - Thread Starter
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Jason, the figures have changed a bit. I am now building my own Seymour XD AT screen that will be 122" wide 237:1 ratio. The screen (because of the false wall)is now closer to the projector location to the tune of about 16' ish.

Knowing that and the Panamorph UH380 I have.... you see any potential problems with a RS45, 55 or 65?

Thanks
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post #12 of 23 Old 04-10-2012, 10:00 AM
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I have a 120" screen and a 480 lens at just over 15' and works great. Plenty of zoom to go. Oh and an RS45

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post #13 of 23 Old 04-10-2012, 11:46 AM
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Quote:
Originally Posted by BroncoSport View Post

Jason, the figures have changed a bit. I am now building my own Seymour XD AT screen that will be 122" wide 237:1 ratio. The screen (because of the false wall)is now closer to the projector location to the tune of about 16' ish.

Knowing that and the Panamorph UH380 I have.... you see any potential problems with a RS45, 55 or 65?

Thanks

Not Jason, but I can answer the question for you. Your 122" wide 2.37 screen has a height of 51.5". That translates to a 1.78 width of 92". throw distance of 16' is 192". 192"/ 92" gives you a throw ratio of 2.09. You are fine with that throw ratio.

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post #14 of 23 Old 04-10-2012, 09:01 PM - Thread Starter
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post #15 of 23 Old 04-20-2012, 07:00 AM
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I am just days away from getting my RS45 installed and I am wondering if it can do vertical stretch on java-3D titles. I know my Oppo 93 can not do it.

Thanks!
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post #16 of 23 Old 04-20-2012, 09:34 AM - Thread Starter
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The content shouldn't matter. Remember that the projector is stretching anything it gets, so in theory you could stretch a VHS tape. The projector doesn't know one source from another.
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post #17 of 23 Old 04-20-2012, 09:52 AM
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Quote:
Originally Posted by BroncoSport View Post

The content shouldn't matter. Remember that the projector is stretching anything it gets, so in theory you could stretch a VHS tape. The projector doesn't know one source from another.

Ok, I guess a better way to ask the question is: can you you do vertical stretch while displaying 3D content ( or in 3D mode)?
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post #18 of 23 Old 04-20-2012, 12:47 PM - Thread Starter
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from post #5

"Of particular note, the JVC supports use of an anamorphic lens in 3D mode. That's a nice touch that most others have skipped. It's not a really big advantage as it won't come in handy very often. Seems very few 3D movies or other content come in 2.35:1 (or one of the other Cinemascope aspect ratios). Of my collection of perhaps 35 3D titles, I think only Monster House, and one other is widescreen, the rest, all 16:9. Well, in case the movie Hugo comes out in 3D Cinemascope shape, that alone will be great for those using an anamorphic lens"

Maybe that can answer your question. For me, I HATE 3D and will forego even seeing a new movie in the theater IF 3D is the only way to see it. I have done it a couple times and although the technology has really improved, I don't enjoy watching a movie with sunglasses on!
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post #19 of 23 Old 04-20-2012, 01:08 PM
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Well I know the RS40 could not do the vertical stretch while in 3D mode. Trying to confirm if the RS45 can or not. Has anyone tried this directly?

I have the Oppo 93 that can do the vertical stretch on anything other than 3D (seems processor is not power enough to do both at same time). IF I am going to watch 3D, I would want to watch it in OAR. I guess I could always leave my lens in passive mode and use the zoom method for 3D.
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post #20 of 23 Old 04-22-2012, 04:04 PM
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Quote:
Originally Posted by rod319 View Post

Well I know the RS40 could not do the vertical stretch while in 3D mode. Trying to confirm if the RS45 can or not. Has anyone tried this directly?

I have the Oppo 93 that can do the vertical stretch on anything other than 3D (seems processor is not power enough to do both at same time). IF I am going to watch 3D, I would want to watch it in OAR. I guess I could always leave my lens in passive mode and use the zoom method for 3D.

From all reports that I have read the RS45 does do this. I have not tested personally. I have not received my 2.40 screen or lens yet to test with my RS45. Probably be 3 weeks before I receive and get everything set up.

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post #21 of 23 Old 04-26-2012, 01:11 PM
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Speaking of the JVC projectors and anamorphic re-scaling...

I'll soon have a Panamorph A-lens and so will be delving into anamorphic re-scaling for the first time.

I have the JVC RS55, and Oppo 93 Blu-Ray player and a Denon DVP 602CI video processor. All of these, I believe, can perform the anamorphic stretch to work with the A-lens. Can someone suggest which one I should use to re-scale to anamorphic?
Is the re-scaling with projectors like the RS55 good? Or would the Oppo or Denon VP be a better bet?

Thanks,
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post #22 of 23 Old 04-26-2012, 04:38 PM
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The Rs-45 does do stretch on 3D. Confirmed with mine last night.
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post #23 of 23 Old 04-27-2012, 12:34 PM
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Many JVC projector installations, with an anamorphic lens, use a Lumagen Radiance video processor to do the vertical scaling for a 2D or 3D movie. The Radiance includes the Lumagen "No-Ring" scaling.

The Radiance also has a CMS (Color Management System) that has a 3D color cube. This can give you very accurate skin tones and colors when used to calibrate a JVC projector.

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