short of + noun/adj

[MadHorse]

I'd always thought 'short of ' could only be followed by a noun, until today when I encountered this sentence:
He is intent on furthering his character's psychological progress toward a goal; and when he needs them he is willing to create these episodes and all sorts of other details that are far short of convincing 'real'.
I am doubtful of this use so could you confirm that 'short of ' can also be followed by an adjective?
Thanks.

[Tdol]

I'd use 'fall short of real', but I wouldn't think of it as an error as such.