1. Sunshine 16 law
To scenery photography, the result measuring light that relies on camera overly often cannot get first-rate films the effect. When for instance bedding face of the existence in setting accumulates dark lubricious scenery, the system measuring light of camera can increase light exposure, gotten photograph result has presented the result that expose to the sun, the sky becomes ghastly one, without any detail.
At this moment if use " sunshine 16 law " , won't appear this kind of circumstance. The illuminate intensity of sunshine is relatively fixed, it is outdoor sunshine illuminate is enough, it is the aperture set of camera 1/125 second for speed of F16, shutter (ISO falls for the premise of 100) can take outstanding prize powerful, the scenery photograph with normal exposure. According to this law, come up against glance relatively strong environment, be in for instance on beach when photography, should use F/22 aperture, get in the light abate when, f/11 aperture should be used below cloudy circumstance for instance.
2. moon 11, 5.6 law
The moon is the closest from us celestial bodies, it has regular ground to producing change, from ancient when those beautiful fokelore are not had, do not engrave up to now make people is coming into being daydream to celestial body, and the sky is faced when you in night when, the moon is the first eye shot that walks into us. Ancient time, poets drink to the month ode poem, modern culture is being enjoyed now in people when, like to take the moon into his an album of paintings.
According to the measurement of professional personage, the brightness value when full moon is EV15, camera ISO set is in 100 when, use the shutter rate of 1/125 second, use aperture F11 to film can achieve normal visual result. The need when half moon increases 4 times light exposure, exposure is combined but set is F5.6 of second of 1/60 of ISO100, shutter, aperture. And the exposure that filming nearly 1 second needs to grow even when lunar bud. Because the change of their size is caused,fractionize analyse rises is not of brightness drop, wear since the angle that the moon is shot when profit and loss changes by in relief illumination however change. Film lunar avoid overexposure, much exposure can become a Bai Juan, be without lunar feeling, call a moon so, because it has stereo feeling,be.