Originally Posted by pin008
IMO, there is no such thing as a 'BEST' aperture, or any other setting. Choice of aperture is influenced bythe available aperture range of your lens,the desired exposure, the desired depth of field, the effect of diffraction, etc. Photography, like much of life, involves compromise. Sometimes I'll choose to use a very small aperture even though I know that will result in loss of sharpness from diffraction, because I want a deeper depth of field. Sometimes I choose a high ISO even though I know that will result in elevated noise, because I want a shutter speed fast enough to freeze motion.
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