Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




311 posts

Ultimate Geek
+1 received by user: 11


Topic # 86207 3-Jul-2011 17:47
Send private message

Hi, I just got back from seeing Transformers 3 at the IMAX, and I was really impressed with the of the IMAX system. However the movie that we saw today, never used the entire screen, it used maybe most of the screen, but the was a fair amount of the screen at the top which they never used. It was really dissapointing, becuase the movie would have been so much better, if they had used the whole screen.


Has anyone noticed this, and why don't they use the whole screen when showing a movie at the imax?


Looking forward to getting some responses.

Thanks      

Create new topic
25808 posts

Uber Geek
+1 received by user: 5542

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  Reply # 488862 3-Jul-2011 18:24
Send private message

IMAX is a 1.44:1 aspect ratio. This is different from normal 16:9 TV (1.78:1) and regular movies for cinemas which are 2.35:1

The reason is exactly the same as why all Blu Ray and DVD's don't fill a 16:9 TV - if they did it'd be because the left and right was centre cut (chopped off) to fill the screen.


7703 posts

Uber Geek
+1 received by user: 748

Subscriber

  Reply # 488869 3-Jul-2011 18:45
Send private message

It's got a great sound system hasn't it..




Regards,

Old3eyes


 
 
 
 




311 posts

Ultimate Geek
+1 received by user: 11


  Reply # 488874 3-Jul-2011 18:50
Send private message

sbiddle: IMAX is a 1.44:1 aspect ratio. This is different from normal 16:9 TV (1.78:1) and regular movies for cinemas which are 2.35:1

The reason is exactly the same as why all Blu Ray and DVD's don't fill a 16:9 TV - if they did it'd be because the left and right was centre cut (chopped off) to fill the screen.



Thanks for the reply, I understand better now, but why then do they add all that extra room on on the screen then, why not just make the screen so that a 1,44:1 aspect ratio fills it completely? Do they use the imax screen for other purposes that take up the whole screen?


Having such a big screen, where quite a decent chunk is never used just seems such a waste in space.    

268 posts

Ultimate Geek
+1 received by user: 49


  Reply # 488928 3-Jul-2011 21:43
Send private message

That theatre was originally built to show actual IMAX movies. But that lasted only a few years as there wasn't enough interest in it. So they converted it to show regular movies, keeping the big screen and sound system.



311 posts

Ultimate Geek
+1 received by user: 11


  Reply # 488932 3-Jul-2011 21:54
Send private message

Jarno: That theatre was originally built to show actual IMAX movies. But that lasted only a few years as there wasn't enough interest in it. So they converted it to show regular movies, keeping the big screen and sound system.


So you are telling me, that they are using a standard movie projector (35mm) and projecting the image onto the big screen. Pretty big for a 35mm. Can it still be used to play normal IMAX (70mm) movies?

4860 posts

Uber Geek
+1 received by user: 934

Trusted
Subscriber

  Reply # 488936 3-Jul-2011 22:07
Send private message

PaulZA:
Jarno: That theatre was originally built to show actual IMAX movies. But that lasted only a few years as there wasn't enough interest in it. So they converted it to show regular movies, keeping the big screen and sound system.


So you are telling me, that they are using a standard movie projector (35mm) and projecting the image onto the big screen. Pretty big for a 35mm. Can it still be used to play normal IMAX (70mm) movies?


IMAX is a specific format. They do show some IMAX movies there, but the majority are big-screen versions of the usual Hollywood fare.

Basically....Hollywood don't do IMAX.  




____________________________________________________
I'm on a high fibre diet. 

 

High fibre diet


7703 posts

Uber Geek
+1 received by user: 748

Subscriber

  Reply # 489025 4-Jul-2011 08:46
Send private message

PaulZA:
Jarno: That theatre was originally built to show actual IMAX movies. But that lasted only a few years as there wasn't enough interest in it. So they converted it to show regular movies, keeping the big screen and sound system.



So you are telling me, that they are using a standard movie projector (35mm) and projecting the image onto the big screen. Pretty big for a 35mm. Can it still be used to play normal IMAX (70mm) movies?


Yep they do.  When they do that they change the name of the presentation from Imax to Megascreen.  Allot of Imax these days in digital Imax  rather than the traditional 70mm horizontal format..




Regards,

Old3eyes


4748 posts

Uber Geek
+1 received by user: 79

Trusted

  Reply # 489267 4-Jul-2011 16:58
Send private message

old3eyes:
PaulZA:
Jarno: That theatre was originally built to show actual IMAX movies. But that lasted only a few years as there wasn't enough interest in it. So they converted it to show regular movies, keeping the big screen and sound system.



So you are telling me, that they are using a standard movie projector (35mm) and projecting the image onto the big screen. Pretty big for a 35mm. Can it still be used to play normal IMAX (70mm) movies?


Yep they do.  When they do that they change the name of the presentation from Imax to Megascreen.  Allot of Imax these days in digital Imax  rather than the traditional 70mm horizontal format..


A good example of a recent Hollywood blockbuster filmed partially and screened in Imax was The Dark Knight.

The director convinced the studios to allow him to film much of the action stuff in IMAX and the rest in 35mm. If you saw the movie in IMAX then the picture would occasionally fill the entire screen and then when it wasn't IMAX, it would be the regular 2.25:1 aspect ratio.

My understanding from reading something in the American Cinematographer magazine that for regular screening the IMAX film (which is 70mm shot horizontally) was scanned at 8K and recomposed for regular scope presentation.

The BD preserves the two aspect ratios sort of in that the IMAX scenes are shown 16:9 whereas the other ones are shown 2.25:1.




System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen. Harman Kardon HK AVR 254 7.1 receiver, Samsung 4K player, Google Chromecast

 


My Google+ page 

 

 

 

https://plus.google.com/+laurencechiu

 

 


362 posts

Ultimate Geek


  Reply # 489285 4-Jul-2011 17:55
Send private message

lchiu7:
A good example of a recent Hollywood blockbuster filmed partially and screened in Imax was The Dark Knight.

The director convinced the studios to allow him to film much of the action stuff in IMAX and the rest in 35mm. If you saw the movie in IMAX then the picture would occasionally fill the entire screen and then when it wasn't IMAX, it would be the regular 2.25:1 aspect ratio.

My understanding from reading something in the American Cinematographer magazine that for regular screening the IMAX film (which is 70mm shot horizontally) was scanned at 8K and recomposed for regular scope presentation.

The BD preserves the two aspect ratios sort of in that the IMAX scenes are shown 16:9 whereas the other ones are shown 2.25:1.





I always wondered why TDK seemed to flick between full screen and letterbox on BR. Now I know!    




Lounge:
WIN7 HOME x64 HTPC -  E6420 2.13Ghz -  4Gb 800MHZ PATRIOT RAM - ASUS HD5670 1GB
ASUS P5B-VM MOBO - LG BLU-RAY DRIVE - BG3595 TUNER - 1.5TB STORAGE
PANASONIC 42" FULL HD PLASMA - PIONEER VSX1019AHK RECEIVER - WHARFDALE DIAMOND 10 SPEAKERS

Man Cave:
XBOX 360 MODERN WARFARE 2 EDITION - PANASONIC 37" PLASMA - SONY MONSTA 5.1 SURROUND SYSTEM

80 posts

Master Geek


  Reply # 489572 5-Jul-2011 10:43
Send private message

The problem is they dont seem to use any top black masking, if did have it and drop it the image would be masked perfectly and you wouldnt notice the smaller image.

6552 posts

Uber Geek
+1 received by user: 527

Trusted

  Reply # 489637 5-Jul-2011 13:09
Send private message

PaulZA: why then do they add all that extra room on on the screen then, why not just make the screen so that a 1,44:1 aspect ratio fills it completely?   


This looks to have been answered, but basically Imax is a big (fat) square of a screen shape and you're trying to put a rectangle movie in it.  To make it fit left to right means a lot of area that's not used up the top. 

Most movies are rectangular so you'll have to deal with it, unless
a) you 'zoom' in on the centre of the screen and forget the bits on the sides.  This gives you big screen but you're missing roughly half the actual image, or
b) you watch a movie made for imax, but this is pretty rare in Hollywood terms.

The Dark Knight (and a transformers 2 edition I believe) had sections that were filmed for this and looked amazing.  For normal cinema release they went the opposite way and cropped this giant square image down to a rectangular one.

Anyway, the discussion is essentially about black bars back from the analogue days where TV's were square ish and viewing widescreen movies drove some people insane because there were big black bars top and bottom.  http://www.dtg.org.uk/consumer/widescreen.html

4748 posts

Uber Geek
+1 received by user: 79

Trusted

  Reply # 490112 6-Jul-2011 15:32
Send private message

If you want to read all the gory details how TDK was filmed and prepped for regular 35mm projection from the mixture of standard 35mm film and 65mm IMAX check this artilce out

http://www.theasc.com/ac_magazine/July2008/TheDarkKnight/page5.php




System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen. Harman Kardon HK AVR 254 7.1 receiver, Samsung 4K player, Google Chromecast

 


My Google+ page 

 

 

 

https://plus.google.com/+laurencechiu

 

 


Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54


How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52


NOW to deploy SD-WAN to regional councils
Posted 19-Dec-2017 19:46


Mobile market competition issues ComCom should watch
Posted 18-Dec-2017 10:52


New Zealand government to create digital advisory group
Posted 16-Dec-2017 08:47


Australia datum changes means whole country moving 1.8 metres north-east
Posted 16-Dec-2017 08:39


UAV Traffic Management Trial launching today in New Zealand
Posted 12-Dec-2017 16:06


UFB connections pass 460,000
Posted 11-Dec-2017 11:26


The Warehouse Group to adopt IBM Cloud to support digital transformation
Posted 11-Dec-2017 11:22


Dimension Data peeks into digital business 2018
Posted 11-Dec-2017 10:55



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.