Tease, new Prismasonic cylindrical lens and remote motorized sled. - Page 4 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #91 of 608 Old 12-22-2010, 10:05 PM
CIH USER
 
Franin's Avatar
 
Join Date: Aug 2007
Location: Western Australia
Posts: 17,545
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 275 Post(s)
Liked: 289
Can't wait to see the pics!! If the price is right we will end up having more scope members.

_________________________

Frank
Franin is online now  
Sponsored Links
Advertisement
 
post #92 of 608 Old 12-25-2010, 06:47 AM
Advanced Member
 
Gotchaa's Avatar
 
Join Date: Mar 2000
Location: Los Angeles, CA
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 12
While this lens is not out yet, is it suppose to be in the same class as a Panamorph lens or better? I understand the Isco's are considered one of the best...
Gotchaa is offline  
post #93 of 608 Old 12-25-2010, 08:18 AM
CIH USER
 
Franin's Avatar
 
Join Date: Aug 2007
Location: Western Australia
Posts: 17,545
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 275 Post(s)
Liked: 289
Quote:
Originally Posted by Gotchaa View Post

While this lens is not out yet, is it suppose to be in the same class as a Panamorph lens or better? I understand the Isco's are considered one of the best...

I guess if you require the size, than yes.

_________________________

Frank
Franin is online now  
post #94 of 608 Old 12-25-2010, 08:55 AM
AVS Addicted Member
 
rboster's Avatar
 
Join Date: Jul 2000
Location: USA
Posts: 17,797
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 125 Post(s)
Liked: 108
Quote:
Originally Posted by Gotchaa View Post

While this lens is not out yet, is it suppose to be in the same class as a Panamorph lens or better? I understand the Isco's are considered one of the best...

I would say no...panamorph lens are prism vs the "new" prismasonic is cylindrical design. Historically, both have produced prism lens and would be classified as similar in class. In practice and theory, the cylindrical design should be superior to the prism design.

"Retired" AVS Moderator
New lower price : Anthem MX-510 Receiver (awaiting payment) & ACS PlanarTrap (freestanding acoustic panel) ($300/pair):
http://www.avsforum.com/forum/209-au...tic-panel.html
http://www.avsforum.com/forum/209-au...iver-sale.html
rboster is online now  
post #95 of 608 Old 12-25-2010, 09:12 AM
Advanced Member
 
230-SEAN's Avatar
 
Join Date: Aug 2007
Location: Chicago, IL
Posts: 611
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 13
It is a cylindrical lens, so it will be better than the Panamorph (as it is prisms) and should be a strong contender with the Isco. Also, the best thing about it is that it is larger than the Isco and should be able to accommodate short throws including PJs with recessed lenses, a feature I am very excited about.

-Sean
230-SEAN is offline  
post #96 of 608 Old 12-25-2010, 11:26 AM
AVS Special Member
 
W00lly's Avatar
 
Join Date: Jan 2007
Location: NEBRASKA
Posts: 2,203
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 21
I'm getting giddy I want to see it

Scott

The CopperFields Cinema

          Current Photo's

W00lly is offline  
post #97 of 608 Old 12-25-2010, 11:35 AM
Advanced Member
 
schlitzie's Avatar
 
Join Date: Nov 2001
Location: North Wales, PA
Posts: 539
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Anybody remember Dwin?

Two Weeks!
schlitzie is offline  
post #98 of 608 Old 12-26-2010, 01:40 AM
Advanced Member
 
Gotchaa's Avatar
 
Join Date: Mar 2000
Location: Los Angeles, CA
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 12
Quote:
Originally Posted by 230-SEAN View Post

It is a cylindrical lens, so it will be better than the Panamorph (as it is prisms) and should be a strong contender with the Isco. Also, the best thing about it is that it is larger than the Isco and should be able to accommodate short throws including PJs with recessed lenses, a feature I am very excited about.

-Sean

Wow this is really good news seeing how I am just putting my first FPS together, I guess my timing is good. I would be putting an RS50 at about 12ft distance hanging from about 9ft high, I was planning on a 9ft wide screen but concerned I need to move the PJ back as the A-lens would not be able to handle the short throw, if this new lens can do that, and the price is what we're hearing then it sounds like a great option.

When viewing a calibrated RS50 I did notice a drop in brightness/contrast when a Panamorph lens was used, I am wondering if we should expect the same with this type of lens. If this price is a breakthrough for this class of lens, I am assuming there is going to be some takeoff's...
Gotchaa is offline  
post #99 of 608 Old 12-26-2010, 07:49 AM
Advanced Member
 
230-SEAN's Avatar
 
Join Date: Aug 2007
Location: Chicago, IL
Posts: 611
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 13
Quote:
Originally Posted by Gotchaa View Post
When viewing a calibrated RS50 I did notice a drop in brightness/contrast when a Panamorph lens was used, I am wondering if we should expect the same with this type of lens. If this price is a breakthrough for this class of lens, I am assuming there is going to be some takeoff's...
I don't have first hand experience with a cylindrical lens, but from what I've heard they have far less picture degradation than a prism lens. You apparently can expect a cylindrical lens to look "invisible", as in you shouldn't be able to tell that you just put the lens in front of the PJ as far as picture quality is concerned (obviously you'll see that the image is now a new aspect ratio, but with little to no side effects).

-Sean
230-SEAN is offline  
post #100 of 608 Old 12-26-2010, 07:53 AM - Thread Starter
AVS Club Gold
 
Alan Gouger's Avatar
 
Join Date: Jan 1999
Location: Florida
Posts: 18,728
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 16
Quote:
Originally Posted by schlitzie View Post
Anybody remember Dwin?

Two Weeks!
Is that where that started
Expect a nice update with pictures on Monday. Using the holiday as an excuse to stay away from work.
Regards!!
Alan Gouger is offline  
post #101 of 608 Old 12-26-2010, 11:06 AM
Advanced Member
 
schlitzie's Avatar
 
Join Date: Nov 2001
Location: North Wales, PA
Posts: 539
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Yep -- goes back a long time...

Looking forward to the upcoming info!
schlitzie is offline  
post #102 of 608 Old 12-27-2010, 12:01 PM
AVS Addicted Member
 
mark haflich's Avatar
 
Join Date: Dec 2000
Location: brookeville, maryland, usa
Posts: 20,210
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 604 Post(s)
Liked: 580
Actually the Dwin line was TWO MORE WEEKS.

Mark Haflich
markhaflich@yahoo.com
call me at: 240 876 2536
mark haflich is offline  
post #103 of 608 Old 12-27-2010, 01:29 PM
AVS Special Member
 
Tom Bley's Avatar
 
Join Date: Jan 2001
Location: IL. USA
Posts: 2,244
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked: 21
Pics & info yet?
Tom Bley is online now  
post #104 of 608 Old 12-27-2010, 01:30 PM
Advanced Member
 
230-SEAN's Avatar
 
Join Date: Aug 2007
Location: Chicago, IL
Posts: 611
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 13
Quote:
Originally Posted by Alan Gouger View Post

Is that where that started
Expect a nice update with pictures on Monday. Using the holiday as an excuse to stay away from work.
Regards!!

It is Monday Alan, where is the update????? Lol, I have lens money burning a hole in my pocket! (and bank account) Between, hopefully this lens, the RS40, and the BDP-93 I'm going to be broke by the end of January, ahaha.

-Sean
230-SEAN is offline  
post #105 of 608 Old 12-27-2010, 02:23 PM
 
Aussie Bob's Avatar
 
Join Date: Oct 2004
Location: Sydney
Posts: 799
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:


I don't have first hand experience with a cylindrical lens, but from what I've heard they have far less picture degradation than a prism lens.

A cylindrical is just like any other lens. If it's well made and designed you can expect to see improvements over prisms.

Quote:


You apparently can expect a cylindrical lens to look "invisible", as in you shouldn't be able to tell that you just put the lens in front of the PJ as far as picture quality is concerned (obviously you'll see that the image is now a new aspect ratio, but with little to no side effects).

Some things to look for are:

* Contrast performance (CR): ON/OFF and ANSI varieties.

* Stray light performance: how much non-image light is passed through the lens onto the screen? (related to CR)

* Sharpness: edge-to-edge and top to bottom.

* Ghosting: (or rather, lack of it).

* Distortion: how evenly the image is expanded (should be as close as possible to 1.33 across the screen).

* Brightness: how much light is lost in transmission through the lens (this is somewhat dependent on distortion performance and should be measured after distortion is evaluated),

* Low Color Aberration (CA): again, edge to edge and top to bottom.

* Focus range - minimum throw to maximum throw.

* Orthogonality: how closely the individual lenses in the device are lined up to the optical axis (lenses straight from a factory are rarely perfect in this regard and the final assembly must have been calibrated before shipping)

* Stand functionality: does the stand design allow independent free movement up and down, left and right, tilt and yaw as well as (very important during installation) rotation of the lens?

* Beam capacity: how wide a beam can the lens accommodate?


All of these are measureable/observable and verifiable. In a real test "Wow! It looks great!" is not enough.

Note: Pincushion distortion is the odd man out here. Although many think otherwise, pincushion is about the same on every lens.
Aussie Bob is offline  
post #106 of 608 Old 12-27-2010, 03:10 PM
Advanced Member
 
schlitzie's Avatar
 
Join Date: Nov 2001
Location: North Wales, PA
Posts: 539
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
"Pincushion distortion is the odd man out here. Although many think otherwise, pincushion is about the same on every lens."

So, given the choice, would you recommend a curved screen or a flat screen with an anamorphic? And specifically, yours?
schlitzie is offline  
post #107 of 608 Old 12-27-2010, 03:12 PM
Advanced Member
 
schlitzie's Avatar
 
Join Date: Nov 2001
Location: North Wales, PA
Posts: 539
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
"...pincushion is about the same on every lens."

OOPS - Just re-read that -- I guess the same recommendation goes for all then! So curved or flat?
schlitzie is offline  
post #108 of 608 Old 12-27-2010, 03:12 PM - Thread Starter
AVS Club Gold
 
Alan Gouger's Avatar
 
Join Date: Jan 1999
Location: Florida
Posts: 18,728
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 16
Hello everyone here is the promissed update .

Below are some product details pertaining the new lens and mount. Prismasonic is hoping for delivery is March. That could change ether way.
We will offer a one time pre order special soon for any of the combination's below. The motorized sled might be slightly delayed and will follow the delivery of the Lens but this could also change for the better.
Will post pre order information in two more weeks ( just kidding on the 2 weeks ) next week.
The lens is available with or without motorized Focus. The mount is centered balanced
with contemporary styling. The following will be available as a combo or separate.
The sled is not needed with current Prismasonic lens and will not fit as the new lens is larger with a larger entrance then the Isco3 and the current lens design does not require it be removed from the projectors optical path as it changes ratios while in place however the new universal mount will work with all Prismasonic lens.
Below are some details.

The following are the new product offerings from Prismasonic

HD-6000F: (table stand + manual focus):
HD-6000FX: (table stand + motorized focus):
HD-6000R: (motorized lift stand + manual focus):
HD-6000RX: (motorized lift stand + motorized focus):
CB-500: (Universal ceiling mount):


Common lens details.
-------------------
- Very large aperture 4-element optics, which allows throw ratios down to 1.25
- Continuous focus correction for throw distances down to 1.5 meters
- Focus does not change when removing the lens
- Chromatic aberration correction
- Multilayer AR-coatings

"HD-6000F" is the stand along lens.
--------
- Comes with a Cineslide compatible table stand
- Focus adjusting is done manually from front with L-wrench
- Upgradeable to HD-6000FX, HD-6000R and HD-6000RX models

HD-6000FX
--------
- Comes with a Cineslide compatible table stand
- The focus control is motorized and adjusted by the remote controller
- Upgradeable to HD-6000R and HD-6000RX models

HD-6000R
------------
- Comes with a table stand, which has a motorized, remote controlled lift mechanism
- Focus adjusting is done manually from front with L-wrench
- Can be ceiling mounted with CB-500
-'pass' position never covers the exhaust fan of projector
- Switching the mode does not change the center of the gravity point, thus allowing better the 'one pipe' ceiling mounting
- Upgradeable to HD-6000RX model

HD-6000RX
------------
- Comes with a table stand, which has a motorized remote controlled lift mechanism
- The focus control is motorized and adjusted by the remote controller
- The same remote controller and power plug goes for both motorized focus and lift mechanisms
- Can be ceiling mounted with the CB-500
-'pass' position never covers the exhaust fan of projector
- Switching the mode does not change the center of the gravity point, thus allowing better the one pipe ceiling mount concept

Universal ceiling mount CB-500
--------------------------------

- extremely sturdy custom made construction to ceiling mount all Prismasonic lens models with almost all projectors in market
- allows also projectors with asymmetric optics location
- allows ceiling to be slanted up to 45 degrees to any direction
- fine tilt of setup to both directions by using the L-wrench
- all cables can be routed inside the pipe
- the ceiling box can have up to 3 electrical outlets inside.
- cables can be routed from ceiling box to any direction or through the ceiling
- the pipe length is tailored to customer needs (up to 1 meter drop)

Here are a few pictures:






Alan Gouger is offline  
post #109 of 608 Old 12-27-2010, 03:21 PM
Advanced Member
 
schlitzie's Avatar
 
Join Date: Nov 2001
Location: North Wales, PA
Posts: 539
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Uh oh - so the lens shifts up/down? That will be a problem for those of us with a low ceiling having to accommodate the range...

Oy, there's always one in the crowd, isn't there?
schlitzie is offline  
post #110 of 608 Old 12-27-2010, 03:29 PM - Thread Starter
AVS Club Gold
 
Alan Gouger's Avatar
 
Join Date: Jan 1999
Location: Florida
Posts: 18,728
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 16
I will get more information lets see if the sled can also go down instead of up.
Alan Gouger is offline  
post #111 of 608 Old 12-27-2010, 04:38 PM
AVS Addicted Member
 
mark haflich's Avatar
 
Join Date: Dec 2000
Location: brookeville, maryland, usa
Posts: 20,210
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 604 Post(s)
Liked: 580
It looks like you could just mount the mechanism upside down. Also a possibility would be to reverse the end plates if needed.

Mark Haflich
markhaflich@yahoo.com
call me at: 240 876 2536
mark haflich is offline  
post #112 of 608 Old 12-27-2010, 04:57 PM
AVS Special Member
 
David Susilo's Avatar
 
Join Date: Aug 2002
Location: Markham, Canada
Posts: 9,653
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 325 Post(s)
Liked: 428
can someone please educate me:

if a complex multi-lensed Flourite material lenses with multiple mechanical parts can be sold for less than $3,000 (say my Canon 70-200 f/2.8L IS), why can't an anamorphic lens be sold for less than, say, $500?

follow my A/V tweets @davidsusilo

ISF, THX, CEDIA, Control4 & HAA certified
Reviewer for TED, QAV, AUVI & DownUnder Audio Magazine

my (yet to be completed) BD list
my home theatre

David Susilo is online now  
post #113 of 608 Old 12-27-2010, 05:03 PM
 
Aussie Bob's Avatar
 
Join Date: Oct 2004
Location: Sydney
Posts: 799
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by schlitzie View Post

"...pincushion is about the same on every lens."

OOPS - Just re-read that -- I guess the same recommendation goes for all then! So curved or flat?

Personally I have no preference either way. Both have their problems.

Let me just say a curved screen can actually ADD to distortion if the projector is off-axis (e.g. roof mounted too high, or offset to one side). Then there's the problem of barrel distortion of the 16:9 image.

A flat screen, at reasonable throw ratios, has only small pincushion (can be less than 1% of the screen height, which is hardly noticeable at all). A flat screen is cheaper and easier to manage.

The decision is really one of how "finicky" you want to be.

*************************

On topic... how do you adjust roll on the Prismasonic lens? It doesn't seem to have a rotate mechanism. Tilt, yes. Vertical offset, yes. Rotate... can't see how.
Aussie Bob is offline  
post #114 of 608 Old 12-27-2010, 05:12 PM
 
Aussie Bob's Avatar
 
Join Date: Oct 2004
Location: Sydney
Posts: 799
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
can someone please educate me:

if a complex multi-lensed Flourite material lenses with multiple mechanical parts can be sold for less than $3,000 (say my Canon 70-200 f/2.8L IS), why can't an anamorphic lens be sold for less than, say, $500?

Simple answers, more or less in order of priority:

1. Economies of Scale
They make tens of thousands of camera lenses, even the high-falutin' ones. At best only a few hundreds, maybe a couple of thousands of anamorphic lenses are made in any model.

2. Size Matters
Anamorphic lenses utilise truly huge, expensive optics and these optics are cylindrically ground and polished. This means:

(a) use of special cylindrical lens machines (completely different to spherical grinding machines which are used to make ordinary camera lenses), and

(b) their size implies many, many extra hours of grinding and polishing (we're talking DAYS, not hours, on a machine).

(c) Doublets have to be put together to excruciatingly high standards in order to align their optical axes, unlike spherical doublets, where there is no such thing as "off-axis" rotation.

All this adds up to expense, like up to thirty times more expensive for the bigger lenses.

3. Loss Leaders
Camera lenses are usually integrated into a range of not only lenses, but also camera bodies and other accessories. You don't buy a lens. You buy a system that you may one day be able to afford to upgrade. Prestige lenses can afford to make a financial loss on the actual lens itself, as long as their very existence as a possibility one day to purchase entices the average camera buff to perservere with the system.
Aussie Bob is offline  
post #115 of 608 Old 12-27-2010, 05:26 PM
AVS Special Member
 
David Susilo's Avatar
 
Join Date: Aug 2002
Location: Markham, Canada
Posts: 9,653
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 325 Post(s)
Liked: 428
thanks for the education... although I have to disagree with point 3 (loss leaders). I don't think any company's f/2.8 lens (in 90% of the case, you can't go higher end than f/2.8 zoom lens - there is nowhere else to upgrade) can be considered as loss-leaders. Because if so, where are they going to make the money other than accessories (such as batteries etc) because I know for a fact that camera bodies are their loss leaders.

The most expensive Canon I've used was "only" about $10k (at the time) and it was hand made and had to be pre-ordered (less than 1,000 produced in the world, AFAIK)

follow my A/V tweets @davidsusilo

ISF, THX, CEDIA, Control4 & HAA certified
Reviewer for TED, QAV, AUVI & DownUnder Audio Magazine

my (yet to be completed) BD list
my home theatre

David Susilo is online now  
post #116 of 608 Old 12-27-2010, 05:36 PM
Advanced Member
 
Gotchaa's Avatar
 
Join Date: Mar 2000
Location: Los Angeles, CA
Posts: 755
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 12
Quote:
Originally Posted by 230-SEAN View Post

It is Monday Alan, where is the update????? Lol, I have lens money burning a hole in my pocket! (and bank account) Between, hopefully this lens, the RS40, and the BDP-93 I'm going to be broke by the end of January, ahaha.

-Sean

At least you have a screen
Gotchaa is offline  
post #117 of 608 Old 12-27-2010, 05:56 PM
 
Aussie Bob's Avatar
 
Join Date: Oct 2004
Location: Sydney
Posts: 799
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by David Susilo View Post

thanks for the education... although I have to disagree with point 3 (loss leaders). I don't think any company's f/2.8 lens (in 90% of the case, you can't go higher end than f/2.8 zoom lens - there is nowhere else to upgrade) can be considered as loss-leaders. Because if so, where are they going to make the money other than accessories (such as batteries etc) because I know for a fact that camera bodies are their loss leaders.

The most expensive Canon I've used was "only" about $10k (at the time) and it was hand made and had to be pre-ordered (less than 1,000 produced in the world, AFAIK)

Those opinions are just that... my opinions. I bow to your superior knowledge of camera economics. Makes sense too, kinda like printer manufacturers make all their money from the ink and/or replacement drums.

************************

Incidentally, are these actual photographs or are they 3D renders? There is no text on the Panasonic lens ring and no trademarking that I can see. Also, utterly blemish-free casing with no reflections at all.

Just askin....
Aussie Bob is offline  
post #118 of 608 Old 12-27-2010, 06:07 PM
AVS Special Member
 
CAVX's Avatar
 
Join Date: Aug 2005
Location: Brisbane, Australia
Posts: 8,391
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Liked: 47
Quote:
Originally Posted by Aussie Bob View Post


On topic... how do you adjust roll on the Prismasonic lens? It doesn't seem to have a rotate mechanism. Tilt, yes. Vertical offset, yes. Rotate... can't see how.

They probably consider it a non issue if the projector and screen are set up level to start with. I've never had to roll adjust the MK4 in my system - height, tilt and yaw only.

Mark Techer

I love my Constant Image Height system!
CAVX is offline  
post #119 of 608 Old 12-27-2010, 06:07 PM
Senior Member
 
SteveHorn's Avatar
 
Join Date: Nov 2002
Location: Pelham AL
Posts: 336
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by Alan Gouger View Post

I will get more information lets see if the sled can also go down instead of up.

Measurements for the disengaged (either above or below the projector plane) would be helpful for us with vertically challenged projector mount locations. It looks to be approx. the height of the lens itself (not including the ceiling mount hardware) but since we don't know what that is....
SteveHorn is offline  
post #120 of 608 Old 12-27-2010, 06:37 PM
 
Aussie Bob's Avatar
 
Join Date: Oct 2004
Location: Sydney
Posts: 799
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:


They probably consider it a non issue if the projector and screen are set up level to start with. I've never had to roll adjust the MK4 in my system - height, tilt and yaw only.

Ah, but there's the issue. Even a cumulative 1/4 of a degree out in the combined mounting of screen, A-lens and projector works out to one side of the image being 1/2 an inch higher than the other in a 120" screen width.

For an 1/8th of a degree make that a quarter-inch image tilt.

Are all installations so precise?
Aussie Bob is offline  
Reply 2.35:1 Constant Image Height Chat

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

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