There are a lot of fun things you can do with photography. Here is an effect that I got when taking pictures while it was snowing. The first picture was taken with the flash turned on. The camera was focused on the background, but, as you can see, the light from the flash was being reflected by the snowflakes.
For the second picture I turned the flash off but all other parameters of the shot were nearly the same. The snowflakes do not show up in this picture, but I do think they impact the nature of the picture in a way that I cannot define too well. Perhaps it is a little softer and smoother than normal.
Which picture more closely reflects the perception of the human eye? Does the human perception vary from person to person? Which picture do you prefer?