ISO value:

There is this setting inside traditional camera and digital camera, it is the size of film or force of CCD sense light energy. General ISO is worth the film of average family expenses is 100, this is like fiducial value of a mark same, below this value, the exposure that we can realize all sorts of circumstances basically Align=left>>>

　　Aperture:

The control action that the bright of the quantity that connect light of camera lens encircles, camera lens aperture is normally bigger (F value is less) , the light that pass is more, the characteristic that big aperture brings can acquire very shallow depth of field namely, it is the sort of main body clarity, the effect with around dim view, this method often is used between figure photography, can stress principal part. Of course, the focusing below big aperture must keep accurate, compare shallow depth of field to be illuminated very easily into focal deviation otherwise. Aperture is smaller (F value is greater) , the light that pass is less, longer depth of field can be acquired below small aperture, suit to behave broad view quite so or environment, definition range is very big.

　　 Shutter:

Cooperate the change of aperture, the rate that can adjust shutter will realize correct exposure, shutter is the accident of time of exposure, for instance your aperture is F8 certainly, so shutter is faster, incoming light is less, shutter enters smooth more slower, fast shutter can condense athletic instant in negative or on CCD, for instance the chute of spew, condense into the drip that glittering and translucent get rid of appears below sunshine. If speed of rein in shutter, so, main body does not move be clarity, the crowd of setting can turn ambiguous motion into the effect, the vivid sex of the picture is strengthened.

　　 The relation of aperture and shutter:

After deciding when the correct exposure of a scenery, you can alternate different exposure combination will achieve different result, for instance: A setting is worth in the correct exposure below ISO100 is F8, 1/125, so, you can choose F5.6, 1/250---F11, 1/60 waits a lot of kinds of combination a moment, will control the expressional manner of the picture, a photography is inside this commonly used rule “ leads ” easily - - what should assure light exposure namely is correct, can magnify block aperture, rise to block shutter at the same time, contractible perhaps block aperture, at the same time rein in blocks shutter. This is the concern with chief the other party of a kind of this disappear, magnify or narrow aperture of a few archives, be about to be accelerated accordingly or rein in shutter of a few archives. What just can maintain exposure gross so is correct, assure picture quality, and picture effect passes the combination of ceaseless commutation aperture and shutter to achieve namely. Of course, when this kind of easy rate also has be no longer in force, film for instance moonlight sky, wait special environment a moment, here is not simple easy rate can be solved, more relies on the experience of the person that photograph and skill, need practice will sum up this.
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