I shoot almost all my video footage on Canon DSLRs (APS-C sensors if this makes any difference). I know that true C-LOG isn't available on DSLRs and I've seen many sites that claim to sell "C-LOG" profiles however my understanding is that these are just custom presets.
a) Is there actually any difference between these "C-LOG" profiles online and me just changing the settings in-camera?
b) Is this actually the best way to get the most amount of data out of my Canon DSLRs?
I know about "Exposing to the right" for example, but should this be used in conjunction with other settings?