What's the effect of blowing candles?
I know it doesn't change anything about visibility, since Dishonored doesn't make any use of lights and shadows. So does it change anything wheter I blow the candles or not ?
Solution 1:
As you know they emit light and you are easier seen in light. So by blowing the candles, it will get darker and it will be easier to hide.
I do not think the candle above has any purpose since it is in a well lit area.