Fstoppers
fstoppers.com › education › how-grade-canon-c-log-video-footage-549050
How to Grade Canon C-Log Video Footage | Fstoppers
February 9, 2021 - Log is so named because it refers to a logarithmic function, which in turn refers to the tonal response curve of the mode, which allows for much more dynamic range to be captured — up to 800% more in Canon's case, allowing for a ton more detail to be captured in both the highlights and the shadows.
Reddit
reddit.com › r/cinematography › what are s-log, c-log, etc?
r/cinematography on Reddit: What are S-log, C-log, etc?
October 16, 2013 -
Probably an amateur question, but reading American Cinematographer, I occasionally come across mention of "gamma function," S-log, C-log, and other logs. I was wondering what exactly these are, and what purpose they serve and so on? Thanks!
Top answer 1 of 3
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S-log is referring to an uncorrected sensor output that is flat and low in contrast. This image is taken into a color corrector where the colorist has more control over what colors he chooses to accentuate and the detail in the blacks and highlights is preserved. On most video cameras a Gamma Curve called REC709 is applied which brings the image levels close to what we see with our eyes, this is great for the average user, but for those who want more control, it is better to bypass the default in camera processing. C-log just refers to Canon's "log" shooting mode.
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Log is a format that compresses data very efficiently into the storage available. Every stop of dynamic range gets the same perceptual storage space, as opposed to linear gamma which is how the sensor sees the world and is very inefficient. (Someone here linked to my article that explains why.) The reason log looks flat is because you're often cramming 10-14 stops into the Rec 709 HD spec, which was only meant for about six stops initially. That means every two stops is crammed into a space meant for one, which lowers contrast considerably. Log refers to a logarithmically-encoded gamma curve. Gamma controls contrast and is separate from color space, which is something completely different although most log curves are meant to work within a specific color space (such as Sony's S-Log2 and S-Gamut). Log is not meant to be viewed directly: it is a storage medium only. You need to apply a LUT or some sort of gamma correction so that it looks proper on a Rec 709 display. (Rec 709 is the standard for HD broadcast that enables an image shot on a Rec 709-complaint camera to look normal on a monitor.) Viewing it directly results in a flat, colorless image. Log is NOT uncorrected sensor output. You'll never actually see that. Even viewing "raw" in cameras like REDs isn't raw, because raw is just Bayer pattern information that isn't viewable at all by humans on any device without some kind of processing. (If a camera manufacturer says they are showing you "raw" they are not being entirely truthful. They are showing you some representation of raw that has been processed to be viewable on a Rec 709 display but you are not seeing true raw.) Log is a way of processing raw data in such a way that the same information can be encoded in fewer bits. The rule of thumb I've heard is that you can capture the dynamic range of 12-bit raw in 10-bit log. Log is definitely not a replacement for raw as there are things you can do with raw that you can't do with log, such as go back to the same footage years later with a different deBayering algorithm and pull even more information out of it. It's the next best thing, though, and most TV series shoot log because it's a very efficient way to capture a lot of information for grading. (Features tend to capture raw more often than log.) Every manufacturer has their own flavor of log that works slightly differently. In particular, they each put middle gray and 100% white at different points on the gamma curve. It's important to know this as it helps with determining exposure and judging how much dynamic range you are getting above middle gray. Edit: wrote raw instead of log in last paragraph. Ooops.
Videos
34:05
C-Log Color Grading - Easy Techniques (Including FREE) - Premiere ...
04:55
Canon C-Log Color Grading – Fast, Simple LUT Workflow - YouTube
05:19
C-Log 3 on Canon: What It Is, How to Use It, and Why It Matters ...
11:32
Mastering C-LOG 3: The Ultimate Guide to Cinematic Exposure - YouTube
How To Expose And Colour Grade For Canon C LOG 2 ...
Canon C-LOG Vs C-LOG3 Comparison | What’s The Difference? - YouTube
What is the difference between Canon Log, Canon Log 2 and Canon Log 3?
The original Canon Log delivers a dynamic range of approximately 12 stops, Canon Log 2 up to 16 stops, and Canon Log 3 up to 14 stops. Canon Log 2 retains more detail in darker areas than Canon Log 3 but also features an elevated noise floor. Canon Log 3 is easier to grade thanks to producing a cleaner image and retains the same amount of highlight information as Canon Log 2.
canon-europe.com
canon-europe.com › professional photography & video › stories
Enhance your filmmaking with Canon Log - Canon Europe
What is Canon Log used for?
Canon Log is used to capture video footage that has a wider dynamic range and exposure latitude than standard video. The Canon Log tone curve is applied at the point of capture to retain more details in the highlights and shadows compared to standard video.
canon-europe.com
canon-europe.com › professional photography & video › stories
Enhance your filmmaking with Canon Log - Canon Europe
How does Canon Log help with colour grading in post-production?
Canon Log helps with colour grading as it is recorded at 10-bit colour depth and provides a flat image with low saturation that is an excellent foundation for colour adjustments and HDR workflows. It is easier to match footage shot on different cameras that have been set to Canon Log, enabling clips from Cinema EOS and EOS mirrorless cameras to be combined and colour matched to give a consistent look on a multi-cam shoot.
canon-europe.com
canon-europe.com › professional photography & video › stories
Enhance your filmmaking with Canon Log - Canon Europe
HealthCare.gov
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Undo
undo.io › home › l3: the lightweight logging library for debugging c/c++ races conditions
L3: The Lightweight Logging Library for Debugging C/C++ Races Conditions
June 5, 2025 - You can get it from github here: https://github.com/undoio/l3. The l3_log() function is somewhat limited: the first argument must be a string literal, followed by up to two scalar arguments (char, int, long, uin64_t, etc). It also requires a post-processing step to get the log into human-readable form.
Eriknaso
eriknaso.com › home › 2013 › april › 25 › shooting and editing canon log with the c300 and c100
Shooting And Editing Canon Log With The C300 And C100 | ErikNaso.com : ErikNaso.com
May 19, 2014 - I take Canon C Log footage and show you how to grade it using Magic Bullet Colorisa II
CINECOLOR
cinecolor.io › products › canon-c-log-cinespace
CANON C-LOG: CINESPACE – CINECOLOR
CANON C-LOG: CINESPACE
These meticulously crafted technical LUTs convert Canon footage shot in C-Log (EOS) and C-Log2 +C-Log3 (CINE) to match the Arri Alexa 35.
Unlock the full potential of your Canon Log footage with Alexa-like color science. Achieve more natural, filmic color balances. Preserve skintones while achieving rich, dynamic contrast. Find the perfect base grade in a single click.Includes 14 LUTs in .cube format.
Price $50.00
Canon Europe
canon-europe.com › professional photography & video › stories
Enhance your filmmaking with Canon Log - Canon Europe
Canon Log was first introduced in 2011 for the Canon EOS C300 and through the years different versions of Canon Log have been added to an ever-increasing number of Canon cameras including (but not limited to) the EOS C400, EOS R5 Mark II, EOS R50 V, PowerShot V1 and EOS R5 C (pictured).
Microsoft Learn
learn.microsoft.com › en-us › cpp › c-runtime-library › reference › log-logf-log10-log10f
log, logf, logl, log10, log10f, log10l | Microsoft Learn
July 9, 2025 - // crt_log.c /* This program uses log and log10 * to calculate the natural logarithm and * the base-10 logarithm of 9,000.
Pozo Production
pozoproduction.com › blog › demystifying-canon-log-3-capture-stunning-footage-with-your-canon-camera
Demystifying Canon Log 3: Capture Stunning Footage with Your Canon Camera — Pozo Production
December 15, 2025 - C-Log 3 is a powerful log gamma curve, which allows it to capture incredible dynamic range and cinematic quality video. But conquering its intricacies can feel daunting. So I decided to create this guide to help you capture the best possible C-Log 3 footage you can. This are just my tricks, and woul
University of Utah
users.cs.utah.edu › ~zachary › isp › tutorials › cfunctions › cfunctions.html
C Functions Tutorial
The main function of log3.c contains eight different calls to logbase; the first one, for example, is ... It is important to use a programmer-defined function in a way that is consistent with its interface; otherwise, you will get compiler errors or unexpected results.
Foliovision
foliovision.com › 2020 › 01 › how-to-grade-canon-c-log
How to Grade Canon C-Log: Three Step Workflow - Foliovision
January 15, 2020 - When Carey asked for some tips on how to improve the grade on Canon C-Log, Henry Eckstein stepped up and delivered a three part class on how to grade Canon C-Log step by step, including adjusting exposure, white balance and sharpness.
EOSHD
eoshd.com › store › eoshd-c-log1
EOSHD C-LOG and Film Profiles for Canon DSLR and mirrorless cameras - EOSHD.com - Filmmaking Gear and Camera Reviews
November 29, 2023 - The EOSHD C-LOG and Film Profiles pack installs a “Canon LOG” picture style on cameras previously without it, plus a range of film simulation modes.
LEGO
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Brick Clog 5010203 | Crocs™ X LEGO® Collection | Buy online at the Official LEGO® Shop US
Brick Clog
Step into creativity with the LEGO® Brick Clog
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Editors Keys
editorskeys.com › home › canon clog 3 luts - 13 incredible looks
Canon C-LOG 3 LUT Pack | 13 Cinematic LUTs for Color Grading
Canon CLOG 3 LUTs - 13 Incredible looks
🎬 Transform Your Canon C-LOG 3 Footage Instantly
Shooting in Canon C-LOG 3 gives you incredible dynamic range — but straight out of camera it looks flat, grey, and lifeless. That’s why we created this Canon C-LOG 3 LUT Pack:
👉 13 professional LUTs designed to take your footage from dull to cinematic in seconds.
Whether you’re editing YouTube videos, travel films, studio interviews, or content for clients, these LUTs make your C-LOG 3 workflow faster and your footage look amazing.
✨ Why Choose This C-LOG 3 LUT Pack?
🎨 C-LOG 3 to Rec.709 LUT included – better than Canon’s official LUT for na
Price €24.95
Wikipedia
en.wikipedia.org › wiki › Logarithm
Logarithm - Wikipedia
1 week ago - In mathematics, the logarithm of a number is the exponent by which another fixed value, the base, must be raised to produce that number. For example, the logarithm of 1000 to base 10 is 3, because 1000 is 10 to the 3rd power: 1000 = 103 = 10 ...
Fstoppers
fstoppers.com › video-editing › explaining-most-things-about-canon-log-c-log-get-started-filmmaking-684752
Explaining Most of the Things About Canon Log (C-Log) to Get You Started in Filmmaking | Fstoppers
November 23, 2024 - Each camera has its own native ISO value that yields the best dynamic range, and some cameras even have dual native ISO, with one optimized for low-light scenes and another one optimized for bright scenes. For the Canon 5D Mark IV, Canon recommends using ISO 400 when shooting in C-Log to achieve the best dynamic range.
Unc
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ConnectCarolina
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EOSHD
eoshd.com › comments › topic › 18987-canon-log-to-loc-c-lut
Canon Log to Loc C LUT - Cameras - EOSHD Forum
January 19, 2016 - EOSHD C-LOG · EOSHD Z-LOG · EOSHD Shooter's Guides ·
KooR
koor.fr › C › cmath › log.wp
KooR.fr - Fonctions log, logf et logl - Langage C
La macro M_E Les fonctions exp, expf et expl Les fonctions exp2, exp2f et exp2l Les fonctions exp10, exp10f et exp10l Les fonctions expm1, expm1f et expm1l Les fonctions log10, log10f et log10l Les fonctions log2, log2f et log2l · Vous êtes un professionnel et vous avez besoin d'une formation ? Programmation avec Le langage C Voir le programme détaillé
Canon Community
community.usa.canon.com › t5 › EOS-DSLR-Mirrorless-Cameras › EOS-R-Why-use-C-Log3 › td-p › 474476
EOS R: Why use C Log3? - Canon Community
December 15, 2024 - Using C-Log3 or any Log profile for that matter is most important if you want to get the most out of the cameras sensor to get the most DR (Dynamic Range) which basically means the most highlights and shadows of the image can be retained at the same time in the image.