I’ve been watching a CFL game on the TV intermittently. BC versus Edmonton, if anyone cares. There is a torrential downpour as they play. And yet as you watch it, you can barely see any droplets from the side profile cameras. You wouldn’t know it was raining until they go up to the real close up shots and you see them taking a shower in their uniforms.
I’ve noticed this in NFL games too. What principle of optics/TV/neurology/meteorology am I ignoring, that makes the rain barely perceptible?
If you were sitting in the stands, you would be able to see the rain immediately in front of you. You would not be able to see the rain on the field because the drops are too small to be seen at that distance.
The TV cameras are focused on the players, not on the rain drops 3m feet in front of the camera. I’m guessing here, but I if the players are 30m away, the depth of field of the TV camera is probably between 20m and 45m. Anything outside of this range is out of focus.
But only when they show the close up shots, right? I cannot see the rain coming down during a snap, in all of my TV’s HD glory. If it wasn’t for the sideline crew wrapped in plastic, I wouldn’t know it was raining!
Rain will show up much more strikingly if it’s backlit in the camera’s view, so shots from field level are going to show rain more readily. The ordinary shots of the field during play, when the cameras are up high, pointing down, there isn’t much light available from behind the drops to highlight them.