Virtual Red Dragon

[Alan Maxwell]

Hi there,
I have just shot a vfx backplate element of a rooftop here in Sydney in 6K 2:1 ratio. but I need the mechanical film back dimensions of the Red Dragon in order to create a virtual camera in Maya for filming a CGI aircraft to go into the comp. I'm sure it's in a Phill Holland Chart somewhere but I ask in case some one can remember the dimensions off the top of the head. Inches or millimetres is fine.

=:+)

 

[Phil Holland]

On a plane, but if you look at the top of this Dragon section under the sticky "Dragon Info and Data Sheets" I made a chart for this very occasion.

 

[Alan Maxwell]

On a plane, but if you look at the top of this Dragon section under the sticky "Dragon Info and Data Sheets" I made a chart for this very occasion.

Thanks Phil got the info from said chart (converted to inches on the Maya Virtiual Camera) and just tested in Maya with an image plane of the backplate. We have a good lock. I'll post a pic or two once we have comped the elements in Nuke.

 

[Gavin Greenwalt]

Since there are so many resolutions that you can shoot in (and people often mix resolutions within a single project) I use the .005 rule.

Resolution * .005 = Dimension in mm.

So 6k FF = 6144 * .005 = 30.72mm (Which is slightly off from the official specs but RED doesn't publish 100th of a mm values anyway so we don't know exactly what the pixel size is, 30.72 might be more accurate or less accurate than 30.7 mm.)

This makes the oddball resolutions easier too.

4k HD = 3840 * .005 = 19.2mm