Question about Panasonic AE8000U Cinema Scope to 16X9 (zoom) - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 11 Old 02-19-2013, 10:43 AM - Thread Starter
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Guys,

I just bought a Panasonic AE8000U projector for my media room. I have not bought my screen yet but am looking at a Cinema scope screen (138" - ~127x54"). The plan is to Zoom into fill the entire screen on 2:35 widescreen movies and zoom out to 110" (~97"x54") when watching 16x9.. So to test this and to prove out the needed throw distance I have the Panasonic projector sitting on it's box about 1' off the floor with lens shift at about 75% of the max. Projected image is about 3' off the ground..

Question 2).. measuring the image there is a slight trapezoidal effect when using the lens shift.. (about 1" difference top to bottom over 127").. I was led to believe lens shift was not supposed to require keyhole to fix this.. Is this correct?


So when I zoom in and play a 2.35 scope image. It looks great. I mask out the screen (127x54) on the wall. I then switch to 16x9 and it zooms back to 97x54.. (does this automatically by video content btw.. greatness)..here is the problem. It shifts the entire image down 18". I have to readjust the len shift (manual) between the images sizes..

This make the zoom worthless. I can't find anything in the manual about how to set this up.

My current thought is you can not use lens shift if you plan to zoom.. Meaning i need to buy a different mount.

Question 2) So can any Panasonic users/ auto "zoomer" out there that have set this up please help me out.

Thanks

Bill
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post #2 of 11 Old 02-20-2013, 06:29 AM
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You'll get a better response over in the Official Owner's Thread for the PT-AE8000U.

https://www.avsforum.com/t/1432437/official-owners-thread-panasonic-pt-ae8000u-us-version-pt-at6000e-european-version

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post #3 of 11 Old 04-15-2014, 01:59 PM
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Did you get this figured out?

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(13) JBL CBT 70j-1 | Denon x7200wa | Sherbourn PA 7-350 amplifier | (8) Ultimax 18" sealed subwoofers | (4) iNuke DSP 6000 amplifiers | (4) MB Quart 12" subwoofers mounted direct mounted to Berkline theater chairs BOSS style | Epson 5040UB Projector | Jamestown 144" acoustic transparent 2.35:1 screen w/ Seymour XD fabric
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post #4 of 11 Old 04-15-2014, 09:33 PM
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Quote:
Originally Posted by Archaea View Post

Did you get this figured out?
The only reason an image would not be square on the screen is because the projector is not square to the screen. Lens shift does not introduce keystoning, only tilting the projector does. The projector must be 100% level, then zooming and changing lens shift will have zero impact on the squarenesss of the image on screen.
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post #5 of 11 Old 04-16-2014, 02:11 PM - Thread Starter
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Yes!.. I was told I could flush mount the projector and use lens shift. Well that is true if you don't want to use Zoom. I had to buy another mount that would put the projector to the top of the screen.

BTW! Using the Zoom to Auto zoom between 16x9 to Cinema Scope(2.35) is Amazing.. I did not install Drapes/panels to block sides when in 16x9.. I don't notice the white screen on sides of the cinema scope screen! Only down side is when movie/tv directors use both 16x9 and 2.35 in one movie.. Projector keeps adjusting back and forth.. I end up turning off auto zoom.

Thanks for checking smile.gif
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post #6 of 11 Old 04-16-2014, 03:11 PM
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2.40:1 is the proper ratio for the ae800u's auto function instead of 2.35:1 right!?!

Archaea's 9.8.4 Home Theater Room
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post #7 of 11 Old 04-17-2014, 06:53 AM
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Quote:
Originally Posted by Archaea View Post

2.40:1 is the proper ratio for the ae800u's auto function instead of 2.35:1 right!?!

It's whatever you want. The AE8000 has 6 lens memories, so you could have 1.33, 1.66,1.78, 1.85, 2.35, and 2.40 if you want.
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post #8 of 11 Old 04-17-2014, 09:17 AM
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Michael Sargent,

Do the custom lens memory saves work with the automatic aspect ratio switching the Panasonic does - or is that a fixed memory setting? I mean does the Panasonic detect when there is 4:3 content for instance and automatically switch to that memory? Sorry I don't have the panasonic yet and am trying to figure out its capabilities.

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(13) JBL CBT 70j-1 | Denon x7200wa | Sherbourn PA 7-350 amplifier | (8) Ultimax 18" sealed subwoofers | (4) iNuke DSP 6000 amplifiers | (4) MB Quart 12" subwoofers mounted direct mounted to Berkline theater chairs BOSS style | Epson 5040UB Projector | Jamestown 144" acoustic transparent 2.35:1 screen w/ Seymour XD fabric
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post #9 of 11 Old 04-18-2014, 08:41 AM
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Yes.

But having said that I have to admit that I only have two lens memories set up, one for "normal" 16x9 video and on for CinemaScope (2.39:1) size. The AE8000 does a great job of automatically detecting and switching between the two (zoom and focus). Occasionally there is a disk with grey bars instead of black bars and you need to manually switch settings, but that's pretty rare. I only have two because most images work well with those two settings. I don't mind a very small set of black bars above and below on some movies. For the occasional odd-ball (like The Big Trail (1930) at 2.20:1), I'll either live with it or manually tweak the zoom.

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post #10 of 11 Old 05-16-2014, 10:27 PM
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I have the same problem right now on my AE8000U. When I don't use the joystick lens shift it works fine. (meaning when the joystick lens shift is in the default middle indent position). When I've used lens shift I have the exact same problem you described in your original post. Panasonic support says you can use lens shift, but couldn't help me get it figured out on the phone through 2 first tier agents today. 2nd tier is supposed to call me tomorrow.


I suspect you can't use physical lens shift.

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post #11 of 11 Old 05-17-2014, 05:18 PM
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I figured it out after some additional playing around. Panasonic level 1 support wasn't helpful, courteous yes, helpful no. Their tier 2 support is apparently closed over the weekend so that explains why I didn't get the call back I expected and was told I'd receive today.


Anyway - to the fix:

1) Put the lens knob joystick (under the front cover) of the projector in the middle indent so there is no physical lens shift. Reset all digital controls under Lens Control and Position in the Projector Menus. Let's start with a fresh slate.
2) Hang the projector, with the lens as close to true center of the physical projection screen as possible -- and level it using a bubble level. The lens should be vertically parallel to the Projector screen. Perfectly parallel to preserve focus uniformity. Hence if your projector wall is perfectly vertical - your bubble level should read flat on the top of the projector.
3) Start by putting a 16x9 image on the screen (the lens test image works fine)
4) Use the lens knob joystick to place the image on the center of the screen - using the zoom and focus to perfect the display to top and bottom velvet border --- SAVE this setting under the lens memory as 16x9
5) Throw in a 2.35:1 movie and play it. The image will appear too small. Use the zoom and focus to perfect the display, when you get it to the right physical size the overall image will likely be too low if you have a ceiling mounted projector. So use the V-Area Position under the lens control (NOT V-Position under Position) to raise the entire 2.35:1 image. In my case I had to raise it +24. -- SAVE this setting as Scope or 2.35:1 under lens memory slot 2. Use H-Area Position under Lens Control sparingly, or not at all if you can place your projector near center of the projector image it shouldn't be needed. If not, you may have to use the physical lens adjustment knob once more to perfect the 2.35:1 image placement towards left and right border of the projector screen frame.
6) Use Left Masking Area, Right Masking Area, Upper Masking Area, and Lower Masking Area to move physical shades into position to block the overthrown 16x9 image that happens in the 2.35:1 position. Note: DO NOT USE MASKING ON YOUR 16x9 image!!! Masking is for the 2.35:1 image only! (Also Note - these masks may potentially block disk player GUI, AVR GUI, subtitles, because most A/V products don't resize these GUI elements to fit inside the smaller strip of media content. IE - if the subtles are in the black bar space on a CinemaScope movie when used on a standard 16x9 display, when using masking you may will not see the subtitles at all). SAVE your Scope or 2.35:1 memory position again with the new masking selections in place. More Info: My projector is mounted in the traditional ceiling mount orientation - upside down. The lens measures just a couple inches under the top black velvet bar. Because of the high mounting position on my unit, the masking works for me on the top of my image, left, and right, but on the bottom of my image I can't mask far enough up (even at +70 max) So I see the black bar overspill below my projected image. The only way I could fix that is to further lower my projector mounting height. I have short ceilings, so this isn't an option for me. You don't have infinite masking headroom, the closer you can mount your projector to the actuall middle of your projector screens physical height the more ideally all these controls work. 2/3's height is fine as well. Alternatively, use black velvet around your screen to absorb the black bar overspill if its a cosmetic problem. A flat black matte paint, or acoustic tile can also help to absorb the black bar overspill if your masking adjustment can't quite hit the amount required.
7) Enable Auto Switching under Lens Control in the projector GUI.


Fixed! Now your screen will automatically switch content while you have some lens offset with the physical knob if necessary. They physical knob on the front of the projector is better to use than any type of digital keystone function, but it is still not ideal (you can lose a little focus uniformity and brightness)


My failure was that I was trying to adjust it to the scope option first so I could fill my cinema scope projector screen perfectly. (makes sense right? getting the left and right distances correct? -- sure makes sense to me anyway- so I was getting the screen centered and vertically adjusted for cinema scope) but when the projector went to 16x9 mode the picture would be off the top of the projector screen because the 16x9 is taller than scope. Trying to drop the image using the digital lens controls would actually just cutoff/delete content, basically cutting off the actors heads. So you can't really modify 16x9 picture much vertically because it already uses the whole vertical span. However you CAN modify the scope screen vertically and not lose content - so you have to do the 16x9 adjustment first and then do the scope adjustment Simple order of configuration made it work!

If you were using a desk mount (right side up/or shelf mount) with physical lens shift you'd probably have to reverse my instructions but they should still work.

Good luck - hope this helps!

Archaea's 9.8.4 Home Theater Room
(13) JBL CBT 70j-1 | Denon x7200wa | Sherbourn PA 7-350 amplifier | (8) Ultimax 18" sealed subwoofers | (4) iNuke DSP 6000 amplifiers | (4) MB Quart 12" subwoofers mounted direct mounted to Berkline theater chairs BOSS style | Epson 5040UB Projector | Jamestown 144" acoustic transparent 2.35:1 screen w/ Seymour XD fabric

Last edited by Archaea; 03-29-2019 at 04:23 PM.
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