10-17-2012, 03:47 PM
Without having looked carefully at the spec of the Hero3, i'll try and answer some of your questions:
It really depends what you want to use the plates for. Most matte paintings tend to be finished at 2x final output resolution, but plenty of movies are finished at 1080p. When we did Captain America all the shots were comped at 1920 x 1080 (and then hardmasked to 2.35), so even big budget movies can work with that resolution. However, if you want to work on your matte paintings larger than the final output (which typically you will to avoid the final painting being too soft, particularly if you are doing any projections too) then 1080 might be too small. Although of course if you shoot for example a waterfall element using the full frame of the camera but are just keeping it in the distance in your shot then that would probably work just fine...
The 4k 12fps thing sounds a but gimmicky to me. Possibly useful for sports as a fast burst speed with decent resolution, but you really want to shoot 24fps if you are emulating film. For a stylised time lapse kind of look though you may be fine. Id rather get a good DSLR stills camera and shoot RAW than use 12fps 4k on a video camera for collecting matte painting refs personally.
The quality of the footage really is down to having good dynamic range, limited noise in the video and a good handling of colour and compression. There are other very good cameras that will shoot nkce video plates for your matte painting so choose carefully! :)
Digital Matte Painter // Forum Moderator