Check your settings.
I make mistakes. Some big, some little. Consequences vary, but I always learn from them.
Take for instance these half-dozen shots made back in early 2011. I used my Panny GF1 and a c-mount lens, the SLR Magic Toy Lens 26mm f/1.4, to make a few pictures around the neighborhood.
Love that swirly bokeh. But the blue was a bit of a surprise.






Anyway, as I noted in comments made about the portrait on Flickr “…the blue cast is from my not remembering to switch back to AWB before I headed out for a walk around the block. The Tungsten setting casts blue in daylight. But I think it works in the handful of pictures I posted this afternoon. A lesson, of sorts.” The unusual portrait got a good number of views, a coupla’ faves, and a handful of comments.
I seem to recall noticing what I’d done about 6 pictures into my stroll and changing back to AWB. Oh, well. Interesting results.
The lesson? Check your settings.