EOS R8 How to save multiple custom WB settings

[justadude]

After looking over the owners manual for the Canon R8, and spending more time than I wanted to scouring the internet, figured I would ask the experts here for some help.

My Canon R8 has been converted to a Full Spectrum camera for infrared photography.  As you may (or may not) know... various wavelength in the infrared spectrum requires different custom white balance settings - even on RAW files - simply so you can preview each shot as to how it's supposed to look at that wavelength.  Typically on my other Canon cameras I don't worry about WB since the preview on the RAW files is close enough.  With infrared photography, it's not.  And it's tiring constantly resetting the Custom WB.

If I shoot between 550nm and 665nm then I have to set a custom WB against a white card (not a grey card).
If I shoot between 720nm and 850nm then I set a custom WB against green foliage.

So my question is, Can I set a custom WB for the 550nm - 665nm and save it.... and then do a different Custom WB for the 720nm - 850nm and save it, basically having two custom white balance settings?  

[p4pictures · Accepted solution]

I think I have found a way to achieve this by using custom shooting modes. 

I have the EOS R6 Mark II, but that is essentially the same as your EOS R8 so I "dangerously" assume it will be ok for you.

With my camera set to Av mode I did a custom white balance shot and set the camera to use custom white balance from that image. Then I registered the camera settings as C1 on my camera. Then I did another custom white balance while still in Av mode, but with a completely different subject and colour. Switching between C1 and Av mode I have two different custom white balance settings and the preview image on the LCD shows different colours for Av and C1 modes.

[justadude]

That seemed to do the trick.  Thank you, Brian!