Lens Correction Lightroom

[oblivion]

Ok so my 5d mark ii has lens correction built in and turned on for my 24-105mm L
Does this do this for both RAW and JPEG
When imported to LR if I choose Lens Correction for the profile does it technically do it twice, thus distorting the image wrongly, or is it smart and knows its already been done?

Should I leave the lens correction on my 5d and forget LR, or turn off the lens correction on the 5d and just use LR?

I knew this was going to be a complicated question to establish the "right" answer and the only one I found online so far was below

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PASTED from another site
LR does not apply lens correction to JPEGs, only to RAWs (unless forced to do so).

Enable the correction on both: the camera will give you corrected JPEGs when you shoot JPEGs, LR will give you corrected JPEGs starting from the (uncorrected) RAW.

The correction won't be applied twice unless you really force it manually by opening a JPEG in LR and then by manually selecting the lens used (something LR does not even get automatically on JPEGs) and applying again the correction
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The more I read the above answer the more confused I get......any ideas or experiences in this question would be great

 

[4wd]

I would just try it and see which looks best?
I often find the pre-installed corrections seem to go a bit far and prefer it without or a bit less manually.

 

[Oliver Pohlmann]

As I understand it...

Lens correction, if selected on your camera, is only applied to JPEGs not RAW files by the camera. Remember RAW files leave the camera without any processing or adjustments, so they remain unaffected.
Lightroom then only applies lens correction to RAW files and ignores JPEGs if LR detects it's already been applied to the JPEGs in camera.

Personally, if all your images go through Lightroom (JPEGs and RAW) then turn lens correction off in camera and let Lightroom do the work.