24-70 F4 blows away my kit lens

Started Mar 2, 2014 | Discussions thread
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GaryW Veteran Member • Posts: 8,268
Re: 24-70 F4 blows away my kit lens

Fred Briggs wrote:....

In fact there is only one plane which is actually in focus - everything in front and behind that is out of focus to varying degrees, depending on how far from the actual focal plane it is. DOF just reflects how much "appears" to be in focus if viewed small enough, or from far enough away.

Don't forget that often the focal plane isn't flat but curved.  This makes judgements about "soft corners" a bit more problematic, particularly when examining photos of brick walls.

You can confirm this with a simple experiment. Take a picture of a brick wall at about 45 degrees,...

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Gary W.

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