Quote:
Originally Posted by kencaleno
Why Considering ? -it's almost the optimum for DOF- F11 is the ideal for landscapes - F11 at 18mm focal length,focused at 1.5 meters(5 feet) will produce acceptable sharpness from 0.754.3 meters(2 feet six inches) to infinity-as aperture decreases in size, eg: F16;F22;F32 etc., diffraction softens the image. Ken
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That's good to know, Ken! I didn't before.