Archive for: raw video

5D Mark III & RAW Video, A Case Study

Magic Lantern is onto something…
There have been a lot of posts lately about Magic Lantern’s breakthrough enabling RAW video recording on the Canon EOS 5D Mark III.

Below is an ISO test of the standard H.264 of the 5D3, and what the RAW video from Magic Lantern looks like. This was done by Dustin J Tolman.

The results are pretty remarkable and easy to see, this software is still in its early stages and will probably get a lot better over the next few months.

Workflow
An ISO test comparing Canons H264 compression vs Magic Lantern’s 14 Bit RAW hack.

• First I converted the RAW files with ML’s raw2dng.
• Next I dragged the files into Photoshop which opened up Adobe Camera Raw.
• I selected the first image and used the auto white balance setting which got rid of the heavy magenta tone.
• Then I synchronized the additional files, and exported them as 16bit tiff files.
• First I tried to use QuickTime 7 to create an image sequence, but it render the video with incorrect color.
• So instead of QT I ended up using Final Cut Pro X to create an image sequence to a ProRes 422 HQ output.

Canon 5dmk3 @ F8
Canon 70-200 2.8L IS II @ 200mm
Technicolor Cinestyle

Music – Soundgiant

Read more about this test at Planet5D.com | EOS 5D Mark III at B&H Photo

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Patent: Canon RAW Video

Patent: Canon RAW Video

Canon has filed a patent for RAW video
“The recording of successive frames of raw sensor data depicting a moving scene is provided. The raw sensor data comprises pixel data for an image sensor having pixels arranged in correspondence to a mosaic of plural different colors in a color filter array.”

EOSHD broke it down for people that like english.

  • Designed for compatibility with CF cards
  • Supports 4K and 2K video (4K is 4096×2048)
  • Works with Bayer CMOS sensor (like the one in a DSLR)
  • Sensor output is 12bit

Although current C300 camera has a 4K sensor, it cannot output a 4K image because most of the pixels are used to reconstruct colour without interpolation (made up pixels in-between).

Source: [P5D] via @Loricnet

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