Lens mount and sensor formats, Aperture, f-numbers and depth of field, Aperture and exposure – Sony ALC-F62A User Manual
Page 5: Aperture and depth of field, F-numbers” or “f-stops, F-number math, Three keys to effective defocusing, Sensor formats: 35mm full frame and aps-c, Sony a-mount and e-mount systems, Sony dt lenses
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