AVForums

Our philosophy in our forums, reviews, podcasts and feature videos is to promote audio and visual excellence by gathering and sharing the best information and resources available.

Help

To begin please visit our help section »

Not a Member Yet?

It only takes a minute to start enjoying the benefits of AVForums membership, and it's free!

Member Log in

Panasonic on the ceiling?

Post Reply
Old 13-02-2002, 10:16 PM   #1
wolfe
Guest
Posts: n/a
Panasonic on the ceiling?

OK so the wife gives the go-ahead to get a Panny PTAE100. Then the reality hits!
I want to mount it on the ceiling... I can cope with the cabling and physically securing the projector but...... my room ceiling is like this..

--------- --------------------------------------
|__|

There is a beam approx 40cm deep 90 cm from the wall I intend to use for the screen.

I can get the projector anywhere between 10 and 13 feet from the wall.

The question is... how can I get the projector image to look at its best with the beam in the way....how good is the keystone correction?
In an ideal world I'd drop the centreline of the lens so that I could project straight onto the wall. However that puts the bottom of the projector unacceptably low I need some ideas here guys...I cant afford to make a mess of the install since the WAF is dependent on it being neat and unobtrusive. I cant think of a better bunch to ask though
  Quote
Old 13-02-2002, 10:18 PM   #2
wolfe
Guest
Posts: n/a
Well that bit of line art failed miserably...try to imagine the 40cm deep beam 90 cm from the wall....the beam is about 10 cm wide...
  Quote
Old 14-02-2002, 8:09 AM   #3
Distinguished Member
Join Date: Jan 2002
Location: Windsor
Experience Points:
45,485, Level: 52
Points: 45,485, Level: 52 Points: 45,485, Level: 52 Points: 45,485, Level: 52
Activity: 21.6%
Activity: 21.6% Activity: 21.6% Activity: 21.6%
Thanks: Gave 378, Got 854
Posts: 12,641
are you saying the beam drops 40cm vertically down from the ceiling? Thats very deep. You'll need to use keystone correction, can't be helped.

Can someone check the manual to see whether it has optical and digital correction? If you can get away with only using the optical portion it shouldn't affect the image too much. You may want to mask off the image around the screen as you'll get 'overspill' where the real image is being shone.
  Quote
Old 14-02-2002, 9:18 AM   #4
Assured Advertiser
 
Joe Fernand's Avatar
Join Date: Jan 2002
Location: The Borders
Experience Points:
36,526, Level: 46
Points: 36,526, Level: 46 Points: 36,526, Level: 46 Points: 36,526, Level: 46
Activity: 25.4%
Activity: 25.4% Activity: 25.4% Activity: 25.4%
Thanks: Gave 205, Got 1,344
Posts: 14,185
Beam me up!

Wolfe

How about mounting the screen from the beam.

If you mounted it in on the 'rear' side of the beam between it and the 'front'' wall (in the 90 cm gap) you would make a nice job of concealing the screen and the line of the screen would be roughly in line with where a conventional telly would be.

You would still get a 'big' image with your indicated throw distance and minimise the need to use the Digital Keystone correction.

Regards

Joe

joe@tmfsolutions.co.uk
www.tmfsolutions.co.uk
  Quote
Old 14-02-2002, 10:09 AM   #5
Senior Member
 
Roland @ B4's Avatar
Join Date: Apr 2001
Location: Reading.
Experience Points:
9,381, Level: 23
Points: 9,381, Level: 23 Points: 9,381, Level: 23 Points: 9,381, Level: 23
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
Thanks: Gave 2, Got 39
Posts: 2,238
How tall is your ceiling and what is the size and shape of your screen?
I havent looked at the throw of the projector but it will affect the screen width and height. If you put the image too high it could distroy the viewing experience anyway.

The bare minimum the projector lens needs to level with the top of the screen assuming it projects 100% off axis (top or bottom of screen)

Don't try use digital keystone correction there is not a digital projector in the world that can do it properly. If it has optical offset then watch the corners for light drop off.
  Quote
Old 14-02-2002, 12:17 PM   #6
wolfe
Guest
Posts: n/a
I was reckoning on getting the 8x4 mdf/icestorm screen solution and fixing it to the wall.
Do I need to get the centreline of the screen at eye level?
If that is the case then since the projector lens appears to only want to be 10cm below the top of the screen I can only think that putting it on a tripod behind the seating position would be the answer.

What sort of offset angle can I expect the projector to cope with before it shows?

If neccessary I can post a pic of the room for your information.

Thanks guys...appreciate the help
  Quote
Old 14-02-2002, 12:18 PM   #7
wolfe
Guest
Posts: n/a
The ceiling is 235cm high....
  Quote
Post Reply

Powered by  
 Latest popular product prices
Aiptek PocketCinema T15 
4 prices from
 £90.53 Click to show/hide the offers

Optoma Pico PK120 
3 prices from
 £134.99 Click to show/hide the offers

Acer C110 
2 prices from
 £149.95 Click to show/hide the offers

Dukane ImagePro 8758 
1 price
 £192.98 Click to show/hide the offers

Optoma Pico PK301 
4 prices from
 £248.97 Click to show/hide the offers

Optoma DS211 
6 prices from
 £228.96 Click to show/hide the offers

Acer X110P 
7 prices from
 £238.75 Click to show/hide the offers

Benq MS500 
5 prices from
 £238.00 Click to show/hide the offers

 Updated February 12th at 9:30am. Prices include delivery.


Thread information and display options
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off