No, it will not preview smoothly. Yes, proxy files will preview smoothly.

You will need the appropriate C-Log LUT from Canon's website.

Thanks for the answers. I install Canon Log directly on the Eos R7 or in vegas? I am asking for an instruction

Surely the log function is built into the camera settings/software. Consult manual.

To process your 'shot' video you will need a Canon LUT to add to Vegas in order undo the the LUT you used in your Canon. Maybe Canon can provide this LUT, if not there are many available.

Is this camera out yet? Does it use the same log as other Canon cameras?

There are LUTs in the color grading panel and color spaces under ACES as well as whatever Canon provides for download.

You don't have to install anything.

Method 1 - You are targeting an 8 bit output file:

Import your cLOG media onto the timeline. Select it.

Right click on the file in the project media window, select "create video proxy". Wait a while for this step to finish.

Set your preview quality to "preview" or "draft" to enable proxies. "good" and "best" use the original HEVC files and will decode slowly.

Open the color grading panel.

Under the input lut tab, select C-Log to Rec709. I think there's a couple versions of it to choose from in that list IIRC.

You should notice your color and contrast look "normal". Grade from there to your liking and render.

Method 2: You are targeting 10 bit or HDR output:

Import your media into the timeline.

Just like above, create a proxy file.

Open project settings, set the project to 32 bit (full range). If HDR is your target, turn HDR mode on.

If you want to be able to preview in HDR, you must have a HDR external monitor connected, and windows HDR mode has to be enabled for that monitor in the windows display settings.

Right click on the file in project media, and select "properties".

In the properties menu, change the color space to CLog.

Grade the media from there to your liking and render.

Thanks for the answers. I install Canon Log directly on the Eos R7 or in vegas? I am asking for an instruction

The name of a LUT file is followed by the letters *.cube

Wherever you get your Cube LUT file from, that is what you load in Vegas, using one of the three available LUT filter effects.

Thank you for your response. Strange thing. I record in Log FullHD CANON R7 and in 4K without Log Canon R. The Full HD file is larger than 4K without Log. The 4K file plays normally. FullHD file breaks up, no smoothness. The parameters of the processor, graphics and memory reach a maximum of 50%. I think the codec is the problem. The Canon R7 has the H.265 codec and the Canon R H.264. Does Vegas Pro work well with H.265 files?

Log isn't the difference between the files. HEVC vs AVC is a huge difference.

See Frosty's advice for how best to use such files in Vegas.

Does Vegas work well with HEVC/h265? Not especially. Definitely not in 10 bit 4:2:2 which doesn't benefit from GPU decoding either. Being in 32-bit mode in Vegas reduces performance even further. The workaround is to use proxy files (right-click on media, "create proxy file." I recommend testing VP 20 when it is released and see if it is acceptable for your use.

Does Vegas work well with HEVC/h265? Not especially. Definitely not in 10 bit 4:2:2 which doesn't benefit from GPU decoding either. Being in 32-bit mode in Vegas reduces performance even further. The workaround is to use proxy files (right-click on media, "create proxy file." I recommend testing VP 20 when it is released and see if it is acceptable for your use.

With hardware that can handle HEVC/h265, it works very well for me with Vegas. But I stick to 10-bit 30p 4:2:0 and can record and edit multi-hour 5-camera shoots without proxies if only 1 camera is 4k. I can get by without proxies with 4-camera shoots where 2 cams are 4k. Workflow helps. After doing basic cuts between cameras in multicam mode followed by track-level grading, I generate a single 4k hevc intermediate for totally smooth editing after that. Optimal hardware for me is 9900k or higher cpu, 32 gigs or more ram, ssd drives, and Amd Vega or better gpu. I can even get by with a little Nuc (see signature) on the road. Don't have a high-end Nvidia gpu but many folks here report success with them too.

The only thing log format adds is the requirement to use a camera lut in edit. Luts add load but most high performance gpus can handle one lut via fx. But if you use the Color Grading Panel, you can add up to 2 luts there (camera- and look-lut) adding no more load the the CGP itself.

Being in 32-bit mode in Vegas reduces performance even further. The workaround is to use proxy files

I've found the best method to edit the project in 8 bit mode, then just before rendering, put it into 32 bit, color it, then render.

I have the R7. It records video in 4K 30p (29.970), HEVC 4:2:2 10-Bit in C-LOG3. I transcode the footage with Shutter Encoder (current version of 12.6), to Apple ProRes 422. Those files are accepted into either version of VEGAS Pro 18 (Bld. 527) or VEGAS Pro 19 (Bld. 643). Open the Color Grading Panel once you "Highlight" the particular event/take/clip/etc. via ALT + G. Once there, you can use the scopes and do color correction, than grading, with the tools available, or additional FX added. Plus, as mentioned above, the downloadable Official Canon LUT package (which is the same for the R5/R5C/R6/R3/R7/R10), can be applied for the "camera", of which I use the 33 Grid version of Full. The R7 only does C-LOG3, if shooting LOG, unlike my R6 which also shoots C-LOG. Of course, you should be using the minimum ISO of 800 for the R7 while shooting C-LOG3, and in increments of x2 (1600, 3200, 6400, etc.), of which the R7 LUT package instructions state.

Oh, the above versions of VEGAS Pro are on separate computers, which both run fine with either the R6 or R7 transcoded footage. I prefer that method over proxies for my workflow.

@Chief24

@john_dennis

Wow! Guess I should have stayed at the Poconos. You are correct, showing us "youngin's" the error of our ways again! How the heck I got (12.6)? Can I blame it on Cheap, Experimental, VA Drugs?

I stand corrected, I am Not Worthy... 🙂