Sony a7s III Internal Codec vs. ProRes 4444

ProRes RAW HQ transcoded to ProRes 4444 is brighter, less green, has greater contrast, increased saturation and significantly higher resolution than the internally recorded S-Log3/S-Gamut3 XAVC S-I codec. Below are screenshots of the HDR footage dropped onto a rec. 709 timeline with a custom curve added to preserve highlight detail and a hue adjustment to normalize skin tones. ProRes RAW has 23.7% greater resolution than the internal codec. Click on screen grabs to enlarge.

And here’s the same ProRes 4444 clip with a small amount of spatial noise reduction in addition to the temporal. Mode faster – radius small – Luma 2 – Chroma 2.

There’s also more color information in the RAW clip than in the XAVC S-I clip:

Mark Spencer demonstrates how the Sony XAVC internal codec falls apart much more easily than the ProRes RAW one when doing an extreme grade:

For the video, we spent a couple minutes trying to match the footage as best as we could without making any adjustments to sharpness.

One thought on “Sony a7s III Internal Codec vs. ProRes 4444

Add yours

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Blog at WordPress.com.

Up ↑