When someone is wrong on the internet
2 years ago, I unfortunately shot an entire day with 12 bit lossless, not to my knowledge, I had been messing around with slow mo and bits and forgot to reset it to 14 bit lossless..
I didn’t figure it out until I was color grading and I kept feeling that the colors were weird, like Reds would solarize and the overall lacking of colour information was weird. I actually thought the Sensor of my 5D was about to die.
The biggest give away was in the colors that are close to clipping, like böue sky surrounding the sun, a huge chunk of the blue sky around the sun will turn Magenta, like really ugly Sensor pattern magenta, that is impossible to key out because of the pattern, so you have to VFX that out. Basically it felt like the highest part of the ETTR range lost its color information
I recommend you stick to 14 bit, unless you are okey with losing close to a stop of usable dynamic range.
