My sis-in-law came in from Australia for a visit in October and wanted to see the state (Oregon). Since I had yet to take my wife to Crater Lake NP as well, it ended up being on of the many locations I drove them too.
This is the only shot that I came away with feeling ok about. The weather was great, but a forest fire nearby put so much haze in the sky that the lake didn't have its typical deep blue colors.
This is taken from one of main pull-offs on the southern end of the rim, looking towards The Phantom Ship.

-Tyler