Official JVC RS20/HD750 Owners Thread! - Page 115 - AVS Forum | Home Theater Discussions And Reviews
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post #3421 of 5097 Old 03-20-2009, 06:25 PM
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Yes Rich - good luck!
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post #3422 of 5097 Old 03-20-2009, 06:38 PM
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Hey all...happy to say I got my RS20 yesterday. Hooked it up and everything seems to work fine..no convergence issues...no bright corners..yeah! Only issue is that I am coming from an RS2 and the RS20 seems to have a higher black level then my RS2 did. I did have almost 100 hours on the RS2 when I sold it and I know the RS20 has a higher light output then the RS2 so maybe thats it and it will slowly reduce as time marches on. Any tips on how to achieve the best black level from this projector? I have gama set at 2.4 and a couple clicks on the iris...others?

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La Sirena III Theater
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post #3423 of 5097 Old 03-21-2009, 02:49 AM
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Hi Jim !
Correct ... in the beginning RS20 seems to show more high black level compared to RS2/HD100 ... due to it's more high lumes and interaction with the screen and room reflections.
Another thing I've noticed is the more light you have on the screen during the HIDE Function ( Black, no signal ). If you go near the screen, you can see your head shadow more evident and defined than the one you obtained by RS2 that was really more dark and less noticeable.
This is due to 2 concerns... The first is the higher lumens the RS20 can shoots, the other is due to it's straight optic engine design against the 90 degrees design of the RS2, so the light leakage goes all straight to the screen !
In RS2/HD100 part of this light, if you noticed, went on celing or on the floor making a kind of spot in that zones...

The best thing you can do is to find at first the right setting for the iris in order to achieve the right point of white and by this setting to cure your room from reflactions ( wall, floor and ceiling ).
At last, due to the higher contrast of RS20 you can achieve the right amount of high/low lights ratio and will find the black level even better than RS2/HD100
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post #3424 of 5097 Old 03-21-2009, 06:29 AM
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Quote:
Originally Posted by Highlander_AVS View Post

This is due to 2 concerns... The first is the higher lumens the RS20 can shoots, the other is due to it's straight optic engine design against the 90 degrees design of the RS2, so the light leakage goes all straight to the screen !
In RS2/HD100 part of this light, if you noticed, went on celing or on the floor making a kind of spot in that zones...

BINGO!

I never read about it - and reviewers/testers never seem to comment - but the RS20's TOTAL lack of light leakage around the screen is one of the greatest upgrades (to me) over my RS1 (and to a lesser extent) the RS2.

What that means to me - is I don't need side masks on my 2:40 screen when I watch 1:78/1:85 films (bat-cave). The side bars are black enough (not being illuminated by light scatter) to almost disappear. Yes masking would be ultimate and then the side bars would be completely gone - but they are plenty black for me and I never notice them. W/ my previous RS1 - the side bars were so illuminated - the film was unwatchable w/o masking.
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post #3425 of 5097 Old 03-21-2009, 08:24 AM
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Quote:
Originally Posted by Jim Parys View Post

Hey all...happy to say I got my RS20 yesterday. Hooked it up and everything seems to work fine..no convergence issues...no bright corners..yeah! Only issue is that I am coming from an RS2 and the RS20 seems to have a higher black level then my RS2 did. I did have almost 100 hours on the RS2 when I sold it and I know the RS20 has a higher light output then the RS2 so maybe thats it and it will slowly reduce as time marches on. Any tips on how to achieve the best black level from this projector? I have gama set at 2.4 and a couple clicks on the iris...others?

Make sure if you set a custom color temp that you don't have positive offsets. More info here https://www.avsforum.com/avs-vb/showthread.php?t=1096981 (follow link in first post for summary).

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post #3426 of 5097 Old 03-21-2009, 12:14 PM
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Good luck Rich!
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post #3427 of 5097 Old 03-21-2009, 12:22 PM
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Quote:
Originally Posted by Jim Parys View Post

Hey all...happy to say I got my RS20 yesterday. Hooked it up and everything seems to work fine..no convergence issues...no bright corners..yeah! Only issue is that I am coming from an RS2 and the RS20 seems to have a higher black level then my RS2 did. I did have almost 100 hours on the RS2 when I sold it and I know the RS20 has a higher light output then the RS2 so maybe thats it and it will slowly reduce as time marches on. Any tips on how to achieve the best black level from this projector? I have gama set at 2.4 and a couple clicks on the iris...others?

Use an ND filter to cut the light output if wanted. As the projector dims just remove the filter.

My equipment: JVC RS55 for 2D, BenQ W7000 for 3D, Carada 40x117 2.925:1 AR BW Criterion screen, Navatar .8 HD conversion lens, Darbee Darblet, region free Oppo BP93, Toshiba HD-A35 HD-DVD, JVC HD-DH5U D-Theater, Mitsubishi HS-HD 20000 DVHS, Pioneer CLD-97 LD player/AC-3 mod, B&K AC3 Demodulator
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post #3428 of 5097 Old 03-21-2009, 12:30 PM
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"the other is due to it's straight optic engine design against the 90 degrees design of the RS2, so the light leakage goes all straight to the screen!"

That would already be accounted for in the CR spec.

Noah
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post #3429 of 5097 Old 03-23-2009, 02:41 PM
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In the user manual, page 59, one of the the compatible PC signals in hdmi is:
N°9 / WUXGA 60 / 1920x1200 /

Did anybody try and succeeded with this mode.
On my side DVI connector to HDMI does not work.
Is a true hdmi output necessary?
Thanks.
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post #3430 of 5097 Old 03-24-2009, 01:44 AM
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Quote:
Originally Posted by leDahu View Post

In the user manual, page 59, one of the the compatible PC signals in hdmi is:
N°9 / WUXGA 60 / 1920x1200 /

Did anybody try and succeeded with this mode.
On my side DVI connector to HDMI does not work.
Is a true hdmi output necessary?
Thanks.

Hi Le Dahu,

Yes, this mode works fine from my HTPC with a DVI to HDMI cable (nvidia 8800 GTX). DVI is 100% compatible with HDMI, so you shouldn't have any problem.

However, if you plan to use it for video (not as a desktop), it is better to chose the native resolution of the panel (1920x1080) of course. Did you try that mode?

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post #3431 of 5097 Old 03-24-2009, 05:34 AM
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Projector newbie here needing advice.

I soon will be purchasing either the RS-10 or RS-20. I'm curently buying everything I need before I purchase the projector. I just finished building a 16 X 9 100" diagonal screen out of Wilsonart DW laminate with 3" black velvet border (temporary until I decide on what screen size I want). I now want to buy the Chief RPAU universal mount with an adjustable column, but having trouble deciding on whether I should get the 12"-18" column or the 18"-24" column.

I have an 8 foot ceiling white in color. The walls are dark maroon in color. The top of the screen is 24" below the ceiling. The throw distance will be between 14' to 14'-06". The projector will be centered on the screen left to right.

If I buy the 12"-18" column, the lowest I can get center of the lens will be approx 23." (18" column + 2" mount +3" top of projector to center of lens). This setup, however, will let me raise the projector closer to the ceiling for aesthetic reasons. The 18"-24" column will not give me the option to do this.

My questions are what is the optimum vertical placement for these projectors? I've heard that one should try to get the projector level with the top of the screen. Will placing the projector a few inches above the top of the screen compromise PQ? Will placing the projector below the top of the screen give me better PQ? Should I be taking the 3" border into account when placing the projector?

I really think I'm over analyzing this, but I want to make sure I purchase the right adjustable column as they're considered a non returnable item from the internet site I will be buying it from.

Any advice would be appreciated.
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post #3432 of 5097 Old 03-24-2009, 06:21 AM
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I recently purchased a JVC RS20. I haven't had a chance to use it yet
since I'm still building my basement theater. I checked the vertical shift
and that was ok so I boxed the proj. up.
I'll be purchasing the Chief mount and flange.
I'm in the process of trying to figure out where to mount the proj. I plan on using the
Stewart ST 130 (16:9) 110" screen. The screen wall ceiling height is
7'-2" because of the stage and soffit. The ceiling height is 8'-9" where
the projector will be mounted. I have the option of placing the projector
at 14', 18', or 19' from the screen wall. 1st row seating distance will be
approx. 14', the 2nd row will be approx. 17'-18'. The theater is 15'x29'.
What do you experts recommend for the proj. distance from the screen?
I'll be drywalling the ceiling so I want to get this at the right distance.
I've read about light and contrast issues but I'm not sure what to make of it. This is my 1st projector so I need some help.
TIA,
Ken


Ken
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post #3433 of 5097 Old 03-24-2009, 01:15 PM
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Quote:
Originally Posted by Manni01 View Post

Hi Le Dahu,

Yes, this mode works fine from my HTPC with a DVI to HDMI cable (nvidia 8800 GTX). DVI is 100% compatible with HDMI, so you shouldn't have any problem.

However, if you plan to use it for video (not as a desktop), it is better to chose the native resolution of the panel (1920x1080) of course. Did you try that mode?

Hi Manni,

I tried with my laptop (nVidia 7600 Go + DVI-HDMI connector) but the 1920x1200 mode is not identified.
I also tried with a destop equiped with a nVidia quadro4 XGL: same problem.
All the lower modes are working.
Is there anything to set in the PJ?

I want to check whether the 1200 lines are dispayed as seperate lines.
In the user manual I read that the number of effective lines is 1200 and the total lines are 1235.
In other words is the 1920x1200 image height on the screen higher than the 1920x1080 one or is the 1920x1200 image width less large than the 1920x1080?
That would be nice for viewing my photos (frame 3:2) since I would get 20% more pixels.
Maybe I'm totally wrong!
Would you please make the test?
Thanks.

Edit:
BTW
After reading Craig's review I was curious to see what sensation a good gamut and gamma could deliver...
I downloaded MPC and applied a pixel shader. No more than 40 minutes!
Oh my God!!..
I first thought that my HCFR was frozen: perfect gamut at 100, 75, 50 and 25% stimuli.
saturations linearity better than +/-2.5%
True colors with my photos.
I didn't try videos since my laptop is too lazy.

In comparison, the THX mode is slightly undersaturated and really flat and dull. But difficult to explain why. It's an addition of small deviations.
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post #3434 of 5097 Old 03-24-2009, 01:46 PM
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Quote:
Originally Posted by leDahu View Post

Hi Manni,

I tried with my laptop (nVidia 7600 Go + DVI-HDMI connector) but the 1920x1200 mode is not identified.
I also tried with a destop equiped with a nVidia quadro4 XGL: same problem.
All the lower modes are working.
Is there anything to set in the PJ?

I want to check whether the 1200 lines are dispayed as seperate lines.
In the user manual I read that the number of effective lines is 1200 and the total lines are 1235.
In other words is the 1920x1200 image height on the screen higher than the 1920x1080 one or is the 1920x1200 image width less large than the 1920x1080?
That would be nice for viewing my photos (frame 3:2) since I would get 20% more pixels.
Maybe I'm totally wrong!
Would you please make the test?
Thanks.

My mistake, you were right, I tried and it didn't work. I am actually using 1920x1080 in clone mode (RS-20 + Dell 24"), with the JVC as my primary screen so that games can run properly. No way to get 1920x1200 to work, in single monitor or in clone mode. Of course it works on my Dell (its the panel native resolution).

In any case 1200 lines wouldn't be displayed as the resolution of the panel is 1080 lines. It would be interpolated to fit the 1920x1080 panel (the opposite of on my Dell, where 1920x1080 is interpolated to fit the bigger panel).

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post #3435 of 5097 Old 03-25-2009, 01:04 AM
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Quote:
Originally Posted by leDahu View Post

.....
After reading Craig's review I was curious to see what sensation a good gamut and gamma could deliver...
I downloaded MPC and applied a pixel shader. No more than 40 minutes!
Oh my God!!..
I first thought that my HCFR was frozen: perfect gamut at 100, 75, 50 and 25% stimuli.
saturations linearity better than +/-2.5%
True colors with my photos.
I didn't try videos since my laptop is too lazy.

In comparison, the THX mode is slightly undersaturated and really flat and dull. But difficult to explain why. It's an addition of small deviations.

WOW !!
Now you know it !!
It's a NOT Back Point imho !!
It's not like to be maniacs in following a Reference at any costs !! Is that is proper another machine, another world, a Real World !!
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post #3436 of 5097 Old 03-28-2009, 09:03 AM
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I have now had the RS20 for a couple of days. I am very impressed with the image it puts out. Excellent inky blacks with great shadow details. I spent the better part of yesterday setting it up. Thanks to John Ballentine for sending me a PM which pretty much had the latest and greatest settings. I also think lovingdvd, manni01 and jeffY have done excellent work in making the RS20 next level. And not to forget Lawguy for his firmware thread! I just recently had the Pioneer FPJ1/RS2 hanging in my theater and the RS20 with all the extras is definitely a step above. I also just recently had the Sony VW200 and the RS20 is better in many areas as well. I am not going to do a long drawn out review. That has been done here and in most magazines. I feel like I am 5 years to late for the prom. Nevertheless, I did finally show up with a supermodel. I also want to thank AVS (Alan Gouger & Jason Turk) for assisting me in the purchase of the RS20. I look forward to doing future business with them.

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post #3437 of 5097 Old 03-28-2009, 09:25 AM
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Welcome aboard, joerod. The party is just getting started. I guess it was the CMS that pushed you over the edge with the Pioneer? Money well spent by JVC in fixing it, if you ask me. I bet this CMS brings in a second wave of buyers.

Affable Nitwit
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post #3438 of 5097 Old 03-28-2009, 09:38 AM
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Thanks Lawguy! I also am impressed with the scaling ability of the RS20. That and I like the fact that the lens cover closes automatically when off. I don't have to wonder if I forgot to put the lens cap back on. One less thing!

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post #3439 of 5097 Old 03-28-2009, 09:42 AM
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Quote:
Originally Posted by Lawguy View Post

W Money well spent by JVC in fixing it, if you ask me. I bet this CMS brings in a second wave of buyers.

From my perspective it was a win-win for them. If you figure out how to make a working CMS, then that investment pays off in future models. If you don't then you are still "haunted" by the poor CMS implementation in the next product cycle.

Never become so involved with something that it blinds you.
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post #3440 of 5097 Old 03-28-2009, 09:52 AM
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The lens is much better in the RS20 than the RS2 and in the Pioneer rebranding of the RS2.

I think fixing the CMS is something JVC is obligated to do and is doing. They promised in their advertising the ability to set the machines colors perfectly. Many purchased the RS20 at least in part because of this. JVC is doing the right thing reggardless of any costs to JVC.

There Joerod goes again with the inky blacks. Joerod, do the shadow puppet test. The blacks still have a long way to go to reach inky.
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post #3441 of 5097 Old 03-28-2009, 09:54 AM
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Quote:
Originally Posted by mark haflich View Post

The lens is much better in the RS20 than the RS2 and in the Pioneer rebranding of the RS2.

I think fixing the CMS is something JVC is obligated to do and is doing. They promised in their advertising the ability to set the machines colors perfectly. Many purchased the RS20 at least in part because of this. JVC is doing the right thing reggardless of any costs to JVC.

There Joerod goes again with the inky blacks. Joerod, do the shadow puppet test. The blacks still have a long way to go to reach inky.

If I can't call them inky then what can I call them?

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post #3442 of 5097 Old 03-28-2009, 01:22 PM
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Welcome aboard, joerod from me too
Best wishes in ejoying this wonderful machine !
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post #3443 of 5097 Old 03-28-2009, 02:11 PM
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Quote:
Originally Posted by highlander_avs View Post

welcome aboard, joerod from me too
Best wishes in ejoying this wonderful machine !

thx-

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post #3444 of 5097 Old 03-29-2009, 09:48 AM
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welcome aboard joerod. i have been enjoying my dla-hd750 and 09fd combo for quite some time now, heck i bought my hd750 last year already.. there is nothing like enjoying a new projector for the christmas holidays!
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post #3445 of 5097 Old 03-29-2009, 11:07 AM
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Yes, welcome Joe. The RS20 is fantastic. I'm loving mine. The step up from the very good Pearl to the RS20 has been, well, rather significant.

The RS20 & the Elite 09 Blu-ray player are a match made in Blu-ray Heaven.

Watched Changeling last night BD. A good film and one that has some excellent black levels to show off what the RS20 can do. There were times watching where I had this silly grin on my face. Here we are watching this drama & I am smiling.
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post #3446 of 5097 Old 03-29-2009, 11:43 AM
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Thanks guys. We just watched the new Bond and it looked excellent.

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post #3447 of 5097 Old 03-29-2009, 12:42 PM
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Hello

Just got my new RS 20 and initial impressions are excellent echoing many of the comments already posted in this forum. This is definitely a huge step up from my 5 yr old NEC HT110 (XGA resolution, 1024 X 768) which has given me years of trouble free service.

To be honest, when I first played my first Blu Ray on the NEC from my Panasonic BD-55, the jump in quality from DVD was not as dramatic as I had hoped. With the RS 20 now in the house, the circle is complete, huuuuge difference as anticipated!!....the Fifth Element never looked so good.

However, I must have an internal setting wrong on the RS 20 as I could not get a regular DVD or concert Blu Ray (probably 1080i) to project, HDMI 1 says no input.

Any ideas?

Thanks in advance
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post #3448 of 5097 Old 03-30-2009, 07:25 AM
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Enhanced HDMI mode problem with blu-ray-

This was mentioned earlier in this thread, but it bears repeating here, so that others won't run into the same problem I had over the last several days.

Switching the RS20 to enhanced HDMI caused my black levels to go straight to hell and increased noise. Inky blacks became nasty greys. This effect is easily repeatable switching from normal to enhanced while viewing a blu-ray.

I thought my PJ had broken until I figured out the problem.
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post #3449 of 5097 Old 03-30-2009, 08:31 AM
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So I just finished framing my 1.16 gain 11-foot wide acoustic transparent scope screen, and the RS20 doesn't look nothing short of magnificent on it.

However....


I started to notice that the right vertical edge of the projected image is tilted to the left, which means on a 16:9 image, the distance from the top right corner of the of the image to the velvet border is almost one inch wider than the distance between the bottm right corner of the image and the velvet border, so it's like a right-sided-trapezoid

To further illustrate my problem, I posted a mock up which shows the problem. Note that my screen is not that badly tilted, but I wanted to over emphasize the problem with the picture below, so you can get...hmmm..the picture.


I have my projector ceiling mounted using a long mount due to my center soffit which sits in the way of the projection, so I have the projector drop mounted about 12 inches or so from the ceiling, and I am also using some vertical lens shifting to help the projected image clear the low soffit sitting in the way.

I have tried to adjust the keystone settings from the initial default settings of 0/0, but that did not improve it much. I don't know what I am doing wrong. But if my framed screen or projector were tilted or slighly off level then the left vertical edge of the screen should be tilted in a parallel fashion to the right but the left vertical edge is 100% level/straight! Only the right side of the screen's vertical edge is tilted, I used one of those box level rulers which I had used to frame my basement, and it shows that the top, bottom, and left sides of the screens are ON LEVEL, but the right vertical side, which obviously looks tilted, is OFF LEVEL by almost 3/4" of an inch.

Is there something I am doing wrong here? Is this a known defect with the RS20 or its lens?
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post #3450 of 5097 Old 03-30-2009, 08:46 AM
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Quote:
Originally Posted by damnsam77 View Post

Is there something I am doing wrong here? Is this a known defect with the RS20 or its lens?

Either your projector or your screen is not in alignment.

This is easily fixable by adjusting either the projector or the screen.

Don't use any keystoning.

Just adjust the projector or the screen (which ever is easier). It looks like the right side of your screen is not completely flat in relation to the projector. Either the top-right side of the screen has to be moved farther away from the projector or the bottom right side has to be moved closer to the projector. You could adjust the projector to accomplish these things as well.

Affable Nitwit
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