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Post by spiderwort on Sept 15, 2017 13:56:20 GMT
I wasn't sure where to post this question, so I thought I'd put it here, since classic film enthusiasts might have a better understanding of the techniques of film photography. Does anyone here know how exposure works in moving picture photography? What I'm wondering about is how one handles shutter speeds in moving-picture cinematography. If I take a still picture in low light, for example, I might have to adjust a shutter speed to be 1/30 or 1/15 of a second. So, in a medium where one needs a constant 24 frames per second, how is exposure compensated for? It can't be with shutter speed or aperture, so how does exposure work? You have to adjust the f-stop to a wider aperture to let in more light, and possibly use a wider angle lens, both of which, of course, affect depth of field. It also depends upon the ASA or speed of the film stock you're using. The higher the speed, the less light you would need, so the depth of field could be manipulated by using longer lenses and lower f-stops. Higher ASA stocks began to be used regularly in the early seventies with DPs like Gordon Willis who shot THE GODFATHER. Hope this helps. |
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