1.
If you say that someone or something has come out of ~ or is out in ~, you mean that they are untypical, unusual, or strange in some way.
The question came out of ~, but Mary Ann wasn’t really surprised...
He is, like most theorists, out there in ~, ignoring the experimental evidence.
N-SING: usu prep N
2.
Left-field means slightly odd or unusual. (mainly BRIT INFORMAL)
...a left-field cabaret act...
Her parents were creative and left-field and wanted Polly to become a singer or a truck driver.
= unconventional
ADJ: usu ADJ n