The nice, cool camera, having been chilled to perfection in my home, now met the hot, moist air. You can see what happened after that: it fogged up. The filter, the lens elements, the mirror, the prism, the viewfinder, and (presumably) the sensor. I took one shot last night, and this was it.
This has happened to me twice before…once at sunset, and once at last year’s Buggies & Blues. Third time’s the charm, I hope, and that I will have learned to let my camera gear acclimatize to the outside temperature before attempting to use it. Don’t be like me and lose a great shot due to a lack of foresight! Make sure your camera is matched to the conditions before you get ready to click that shutter. Have a good weekend!