Converting Canon CLog 3 to Rec709 LUT

Converting Canon CLog 3 to Rec709 LUT


In this article, we’ll discuss the process of converting Canon CLog 3 footage to Rec709 using a LUT (Look-Up Table). This process is essential for photographers and videographers who want to achieve accurate color representation in their final images or footage. We’ll walk you through the steps to ensure your CLog 3 footage looks its best when converted to Rec709.

What is Canon CLog 3?

Canon CLog 3 is a logarithmic color profile offered in Canon’s professional cinema cameras. It is designed to capture a wide dynamic range, allowing for greater flexibility in post-production color grading. CLog 3 is known for its ability to preserve detail in both highlight and shadow areas, making it a popular choice for filmmakers and photographers seeking maximum control over their images.

When shooting in CLog 3, the footage appears desaturated and low in contrast, requiring color grading to achieve a final look. This is where the conversion to Rec709 LUT comes into play.

What is Rec709 and LUT?

Rec709 is a standard color space used for high-definition television and video production. It represents a specific set of color values and gamma curve designed to ensure consistent color reproduction across various displays. Converting CLog 3 to Rec709 allows for a more natural-looking image with accurate colors and contrast.

A LUT, or Look-Up Table, is a mathematical formula used to transform one set of color values to another. In the case of CLog 3 to Rec709, a LUT is applied to the footage during post-processing to achieve the desired color and contrast adjustments.

How to Convert Canon CLog 3 to Rec709 Using LUT

To convert Canon CLog 3 footage to Rec709 using a LUT, follow these steps:

  1. Import your CLog 3 footage into your video editing or color grading software.
  2. Apply the appropriate Rec709 LUT to the footage. This can usually be done through the LUTs or color grading tools within your software.
  3. Adjust the intensity or strength of the LUT to suit your specific footage. Some LUTs offer adjustable parameters to fine-tune the look.
  4. Make further color and contrast adjustments as needed to achieve the desired final look.

By following these steps, you can effectively convert your Canon CLog 3 footage to Rec709, resulting in a visually pleasing and accurate representation of colors and contrast.

Why is Converting CLog 3 to Rec709 Important?

Converting CLog 3 to Rec709 is important because it allows for a more natural and true-to-life representation of colors and contrast in the final footage. Without this conversion, CLog 3 footage may appear flat, desaturated, and lacking in contrast, which can be unappealing to viewers. By applying the Rec709 LUT, you can ensure that your footage looks its best across various displays and platforms.


Converting Canon CLog 3 to Rec709 using a LUT is an essential step in achieving accurate and visually appealing footage. By understanding the purpose of CLog 3, the importance of Rec709, and the process of applying a LUT, photographers and videographers can elevate the quality of their work and deliver stunning results.


Q: Can I use any Rec709 LUT for my CLog 3 footage?

A: While some Rec709 LUTs may work with CLog 3 footage, it’s best to use LUTs specifically designed for the Canon CLog 3 color profile. These LUTs are tailored to provide the most accurate color and contrast adjustments for CLog 3 footage.

Q: Will converting CLog 3 to Rec709 affect the dynamic range of my footage?

A: Converting CLog 3 to Rec709 using a LUT will not significantly affect the dynamic range of your footage. The LUT is designed to maintain the inherent dynamic range captured in CLog 3 while adjusting the color and contrast for Rec709 display.

Q: Can I create my own custom Rec709 LUT for CLog 3 footage?

A: Yes, it is possible to create custom LUTs for CLog 3 to Rec709 conversion. However, this process requires a deep understanding of color grading and LUT creation. Many professional colorists and technicians specialize in creating custom LUTs for specific color profiles.

Q: Are there specific considerations for applying Rec709 LUTs to still images?

A: When applying Rec709 LUTs to still images captured in CLog 3, it’s important to ensure that the LUT is compatible with still photography software. Some LUTs are designed specifically for video editing, so compatibility with your editing software is critical for achieving the desired results.

Q: Can I revert my CLog 3 footage to its original state after applying a Rec709 LUT?

A: While you can make adjustments to the LUT’s intensity or remove the LUT from your footage, reverting CLog 3 footage to its original state after applying a Rec709 LUT may not fully restore the original color and contrast. It’s best to keep a backup of your original footage for future editing needs.


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