April 2013
Beginner
224 pages
7h 22m
English
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Depth of field
The depth of field, how much of scene in shot is in acceptable focus, is a crucial element in shot composition and controlling how the viewer responds to the image. Cinemagraphic fashion has alternated between deep focus shots (Greg Toland’s work on Citizen Kane (1941)), to the use of long focal lenses with a very limited depth of field only allowing the principal subject in the frame to be sharp. The choice of focal length and f-number control depth of field.
F-number
The f-number of a lens is a method of indicating how much light can pass through the lens. It is inversely proportional to the focal length of the lens and directly proportional to the diameter of the effective aperture of the lens. For a given focal length, the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.