Blackmagic 4K fir cinema at DVinfo.net

Go Back   DV Info Net > Most Recent Additions... > BlackMagic Cinema Camera

BlackMagic Cinema Camera
EF & MFT lens mount / 2.5K CinemaDNG RAW


Reply
 
Thread Tools Search this Thread
Old April 21st, 2014, 03:16 PM   #1
Regular Crew
 
Join Date: Sep 2012
Location: India
Posts: 98
Blackmagic 4K fir cinema

Pardon for being a noob. I was wondering when one shoots for a cinema/movie using the Ultra HD resolution of BMPC, how does it come out when projected on a true 4K projector. Esp knowing the frame size being slightly different between true 4k vs UltraHD...
Roger Pinto is offline   Reply With Quote
Old April 22nd, 2014, 02:08 AM   #2
Inner Circle
 
Join Date: Feb 2006
Location: Belfast, UK
Posts: 4,121
Re: Blackmagic 4K fir cinema

HD has been used for cinema productions for many years, the issue with the Blackmagic camera is exactly the same. Many theaters don't show the edges anyway, because they're masked by the curtains. What you do may come down to your delivery agreement with your distributor and the aspect ratio you're shooting eg scope.

According to the DCI spec in 4K, for Flat (1.85:1) presentation 39962160 pixels of the image are used. The Blackmagic is 3860 x 2160, if you wish, you could adjust in post to fill the cinema 1.85 aspect ratio and lose a few pixels in height. The 4096 horizontal pixels get used in scope as against 3996 with 1.85, .ie they're not using an anamorphic lens on the projector because they use 1716 vertical pixels for that format to give a 2.39.aspect ratio.

If it's just for festivals, you won't notices the edges, I recently watched a documentary I worked on a few years ago, which was shot with a JVC GY HD100 (1280 x 720p). in a cinema and it screened without a problem

Last edited by Brian Drysdale; April 22nd, 2014 at 04:30 AM.
Brian Drysdale is offline   Reply With Quote
Old April 22nd, 2014, 07:44 AM   #3
Regular Crew
 
Join Date: Sep 2012
Location: India
Posts: 98
Re: Blackmagic 4K for cinema

My querry was for theatrical release of movie shot on UHD...
Roger Pinto is offline   Reply With Quote
Old April 23rd, 2014, 01:33 AM   #4
Inner Circle
 
Join Date: Feb 2006
Location: Belfast, UK
Posts: 4,121
Re: Blackmagic 4K fir cinema

It's exactly the same as for HD on 2k, the horizontal and vertical pixels are just doubled for UHD on 4k.

The Arri Alexa gets 4k theatrical release and it's 2880 x 1620.

However, if you want a true 4k resolution you'll need a 5k or higher Bayer sensor, but at this budget level that is probably the least of your worries when trying to get a theatrical release.

Last edited by Brian Drysdale; April 23rd, 2014 at 08:31 AM.
Brian Drysdale is offline   Reply With Quote
Old April 23rd, 2014, 03:53 AM   #5
Regular Crew
 
Join Date: Sep 2012
Location: India
Posts: 98
Re: Blackmagic 4K fir cinema

Thanks Brian.
Roger Pinto is offline   Reply With Quote
Old August 6th, 2014, 05:25 PM   #6
Regular Crew
 
Join Date: Sep 2012
Location: India
Posts: 98
Re: Blackmagic 4K fir cinema

How good or bad the BMPC 4k footage holds for Chroma Key & later Grading works ?
Roger Pinto is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Most Recent Additions... > BlackMagic Cinema Camera

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 12:48 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network