BMCC Global Shutter

The place for questions about shooting with Blackmagic Cameras.
  • Author
  • Message
Offline

nikotaro

  • Posts: 85
  • Joined: Fri Aug 31, 2012 5:22 am

BMCC Global Shutter

PostSun Jun 09, 2013 5:43 pm

is it possible to write a program that allows BMCC 2.5K to have a Global Shutter???
Offline

Mac Jaeger

  • Posts: 1810
  • Joined: Sun May 12, 2013 2:53 pm
  • Location: Germany

Re: BMCC Global Shutter

PostSun Jun 09, 2013 6:45 pm

No. Global Shutter is a basic (non-)feature of the sensor, not a software thing.
Offline
User avatar

Tom

  • Posts: 1626
  • Joined: Wed Aug 22, 2012 5:08 am
  • Location: Manchester, UK

Re: BMCC Global Shutter

PostMon Jun 10, 2013 8:18 pm

Mac Jaeger wrote:No. Global Shutter is a basic (non-)feature of the sensor, not a software thing.



Actually the sensor IS capable of global shutter, but at a significant cost to its performance (noise + DR) - but its is also not just a case of flicking a switch or re-writing software to change it from its current configuration.
Tom Majerski
http://tetragrade.com/
http://www.imdb.com/name/nm5157752/
Offline

ChrisBarcellos

  • Posts: 329
  • Joined: Tue Sep 04, 2012 3:34 am

Re: BMCC Global Shutter

PostThu Jun 13, 2013 9:34 pm

For you tech geniuses: It seems to me that rolling shutter issues are somewhat reduced by using a lower shutter speed. Is there a lower speed or shutter angle that it is not and issue-- like 360 degree shutter, for instance ?
Offline

Dmitry Kitsov

  • Posts: 339
  • Joined: Fri Jan 25, 2013 8:47 pm
  • Location: Walnut Creek, Ca

Re: BMCC Global Shutter

PostMon Jun 17, 2013 12:10 am

rolling shutter issues are not reduced at the lower shutter speeds - rather their appearance. Motion blur will hide some of the rolling shutter artifacts. There are exceptions in some sensors but they normally are not of an interest to us as the rolling shutter appearance is reduced when going from a very small angle to a regular angle of 180 (GoPRo3 for example). Not sure what causes that, possibly multiple read out that has to be used at the very high shutter speeds.
ChrisBarcellos wrote:For you tech geniuses: It seems to me that rolling shutter issues are somewhat reduced by using a lower shutter speed. Is there a lower speed or shutter angle that it is not and issue-- like 360 degree shutter, for instance ?
Dmitry Kitsov

Return to Cinematography

Who is online

Users browsing this forum: MScDre, Tommaso Alvisi and 13 guests