Showing posts with label Progressive. Show all posts
Showing posts with label Progressive. Show all posts

Friday, August 20, 2010

Sony NEX-VG10 Shoots 1080p 30fps Not Interlaced

This hands on video of the Sony NEX-VG10 is good except for the errors. The VG10 does not shoot interlaced, rather it shoots at 1080p at 30 fps. The data is then distributed in AVCHD 1080i 60fps. Open up the video in any video editor and you will see the 1080p 30fps file. The VG10 uses Progressive Segmented Frames to convert the 1080p file to a more consumer friend 1080i.

from wikipedia, Progressive segmented Frame:
Progressive segmented Frame (PsF, sF, SF) is a scheme designed to acquire, store, modify, and distribute progressive-scan video using interlaced equipment and media.

With PsF, a progressive frame is divided into two segments, with the odd lines in one segment and the even lines in the other segment. Technically, the segments are equivalent to interlaced fields, but unlike native interlaced video, there is no motion between the two fields that make up the video frame: both fields represent the same instant in time. This technique allows for a progressive picture to be processed through the same electronic circuitry that is used to store, process and route interlaced video.
From the Sony Specifications on the NEX-VG10:
Also when Video is involved, the lens multiplier is 1.8x not 1.5x. The 16mm pancake is an equivalent 28.8mm for videos.
  • Focal Length (35mm equivalent) : Photo: 27mm-300mm; Video: 32.4mm-360mm (35mm equivalent) (included SEL18200 lens)