This exercise was done with the focus on the middle cactus, on aperture priority mode. The aperture chosen were f/1.4, f/16 and f/22 respectively. Each image has a following one showing the approximate limit of sharpness.
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F/1.4
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| F/1.4 |
This has a very narrow depth of field and really focuses on the subject.
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| F/11 |
This has probably enough depth of field to have most subjects sharp but the objects in the front and back are less sharp.
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| F/11 |
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| F/22 |
Big depth of field here, almost all objects are sharp.
The difference with F/11 is not dramatic but it is noticeable. It's much easier to notice it with objects in a row.
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