If that's the case the errata is not very helpful, but confusing. I understood the Wood Elf ability as an exception to the rule that you can't hide in line of sight. That was the benefit.
Also, I (and my group) didn't have any trouble with the hide /move silently rules of 3.x. Of course we had situations where the DM had to make a call. But we had no problem to apply the rules.
Here it's still unclear to me.
Can a human hide in light fog?
A. No. Only Wood Elves can do that.
B. Yes. He can't be seen clearly (disadvantage on perception)
C. Perhaps. It depents on how dense the light fog is.
It doesnt say ‘If you are trying to hide - you must be completely unseen’
It says, if you are already ‘hidden’.
There is no rule that requires someone to be unseen in order to try hide.
The latest Basic Rules with the errata, says:
‘You can’t hide from a creature that can see you clearly.’
Thus:
You can hide from a creature that can partially see you.
If he's far enough away, yes... light fog isn't actually in the rules, but should be limited to a certain radius before it's considered opaque.
Define your fog.. set the density by how many feet until it is opaque enough to create heavy obscurement.
It's really surprising to me that they don't have fog more carefully in the rules... but their definition of fog is pretty much a pea-soup fog.
Patchy fog is given as an example of a lightly obscured area.
If he's far enough away, yes... light fog isn't actually in the rules, but should be limited to a certain radius before it's considered opaque.
Define your fog.. set the density by how many feet until it is opaque enough to create heavy obscurement.
It's really surprising to me that they don't have fog more carefully in the rules... but their definition of fog is pretty much a pea-soup fog.
The latest Basic Rules with the errata, says:
‘You can’t hide from a creature that can see you clearly.’
Thus:
You can hide from a creature that can partially see you.
Patchy fog is different from thin fog or light fog. I've (personally) experienced fog where visibility was down to under 5', and also for where visibility was over 60'. Fog really deserves a better treatment. Patchy fog is still got to have answered the question: how many feet until it becomes heavy obscurement - but if that's longer than encounter range, it can be ignored.