Do TTL or hand alter exposure?
In small be apart from, when the camera lens that be photographed nearly and does not exceed 60° with angle films, need not TTL but insufficient advisability. To wider angle, especially extensive to exceeding role, flashy exposure suffers the effect of a lot of elements, TTL is not applicable. How do we see TTL work, with respect to good understanding this nodded: The light that flashlight gives out is reflexed to answer lens in advance by the object, there is an inductor in film accessory, this inductor already was passed beforehand process designing, know to need how many smooth talent quite exact exposure, control light exposure in order to control the accident of flashlight glitter time.
Normally, when close quarters and medium distance film, be photographed in the picture main body is very clear on space and distance, TTL works can goodly right now. When we take wide part, case is big different. Besides the main body that be photographed, still have lots and lots of the thing is in the picture. At this moment, exposure program cannot be cleared up, incoming light is catoptric of the main body that be photographed after all, other still have nothing to do but be apart from camera lens to compare close thing catoptric. The result often appears namely wrong exposure. Accordingly, the hand is used to alter exposure in suggesting to photograph in extensive role and consider the ambient light of existence inside.
Mix up light
Many cameraman often forget, because from inside sky illuminate arrives a large number of lights in water, we also have natural light to be able to be used. We can reveal what can enlighten than using flashlight alone with it more things. To achieve optimal result, we try these two kinds of illuminant to be used integratedly, enlighten with flashlight foreground,
Stress the facial expression over there, go building the depth of setting to feel with natural light.
To achieve the result that humorous moves, use A please (Amsler) formulary: AS EA (ambient light of ＋ of flashy decision aperture decides time of exposure) .
Any flashlight, no matter onshore still is water is medium, deciding the size of aperture, we cannot change this a little bit, accordingly, the light exposure of those objects that are not gone to by flashlight illuminate is about to was controlled with the time of shutter.
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