All 3 Uses

candid
in
The Fountainhead
(Auto-generated)

She was looking straight at him; her eyes seemed just a bit too candid.
Chpt 1.12 *

candid = honest and direct
Keating thought with relief that there was nothing frightening about her; there was only a disquieting contrast between her words and the candid innocence of the manner she used to utter them; he did not know which to trust.†
Chpt 1.10
For the rest of the luncheon she spoke to him as to an old friend, gaily and openly; with a disquieting candor which seemed to show that there was nothing to conceal, but showed that it was best to attempt no probe.†
Chpt 1.12

Definitions:

(1) (candid as in: your candid opinion)
honest and direct
(2) (candid as in: a candid photograph)
unposed -- typically said of a photograph
(3) (meaning too rare to warrant focus)