Thread: Is f2.8 enough?
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Old 9th August 2010
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Re: Is f2.8 enough?

25mm @ f/2 the dof is 0.46 feet with the subject at 4 feet from the camera.
25mm @ f/2.8 the dof is 0.65 feet with the subject at 4 feet from the camera.
25mm @f/3.5 the dof is 0.8 feet with the subject at 4 feet from the camera.
50mm @f/1.8 the dof is 0.41 feet with the subject at 8 feet from the camera.

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