Lecture 15: Cameras & Lenses (49)

Are the common f-stops mentioned here exact or are they approximations? It seems that sqrt(2) corresponds to the f/1.4 case numerically to ensure constant exposure when changing both shutter and f-stops at the same time.


does this imply that given a still image, these combinations will produce the same picture? or are there other nuances that apply here?


@jerry-jiao I think these combinations give you the same exposure or brightness. However, the changing aperture or F-number changes the depth of field, and changing shutter speed affects motion blur.

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