diffraction

diffraction
The ability of an imaging system to resolve detail is ultimately limited by diffraction. This is because a plane wave incident on a circular lens or mirror is diffracted as described above. The light is not focused to a point but forms an Airy disk having a central spot in the focal plane.

Optimal aperture F8 to F11

Depth of field smaller at lower f numbers.

Will often get dark photos when shooting toward sun. Unless object is close an you can use a flash on the object.
Used the light. The sun.

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