f 1:2. Ursa Major ("Big Dipper"). Note that all star images appear to be essentially round, and that light fall-off appears to be insignificant, with the aperture one stop down from wide open.
f 1:2. Ursa Major ("Big Dipper"). Note that all star images appear to be essentially round, and that light fall-off appears to be insignificant, with the aperture one stop down from wide open.