Sports at Night ISO-6400

[Oren]

Is there any good reason why the aperture was set to 4.5 and not 2.8?

[Bill M.]

Looks like he was shooting in Tv, so the camera just set the aperture at 4.5 to get the proper exposure for 1/250.

[Dallasphotog]

Is there any good reason why the aperture was set to 4.5 and not 2.8?
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I usually get better results with Tv at night shoots. If you set Av and F/2.8, you may get shutter speeds (especially in the end zones and near the sidelines) too slow to stop motion blur. I also find F/2.8 establishes a depth-of-field so shallow that I can't keep two players in focus if the run shoulder-to-shoulder parallel to my shooting position.


Everything at night is a compromise... Her's an Av shot with the lens wide open.


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XTi, EF70-200MM F/2.8 L IS USM @ 200MM, Av, F/2.8, ISO-1600, 1/160