How golf ball is being focused/traced in live TV broadcast?

Started Mar 4, 2012 | Discussions thread
GordonAtWork Regular Member • Posts: 479
Re: Red output to the viewfinder.

birdbrain wrote:

The camera viewfinder is fed with the output of the red channel only.

So the ball stands out against the sky which is blue and the greens which are erm green.

The input to the viewfinder is in fact switchable so the cameraman can select what he wants, but usually it's the red output to track the ball. Unless it's cloudy of course.

Hope that helps.

I wondered why the ball kept getting bigger, then it hit me.

Isn't that why most pro's use a monochrome viewfinder and the image can be tuned so that an object in focus has an edge to it ?

I managed to follow focus on some pink footed geese while they were circling on a wetland reserve. Not bad you say until you realise that I was using an EF 400mm f5.6L on my XL1s (effective focal length of 3000mm), boy was that challenging with the colour LCD screen.
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