Hi!I took this shot in San Francisco's Golden Gate park. No flash and with an automatic camera so there was no shutter or F Stop manipulation.
Conditions: dusk, no fog, I don't smoke and I was alone; no one in close proximity that could have produced any form of smoke. I always HOLD my breath when I take pictures, so it wasn't caused by camera movement.
They say you shouldn't try to find forms in these types of shots so I won't. All I can say is I can't debunk this shot.
Cheers,
Cee, San Francisco
