March 2009
Intermediate to advanced
320 pages
7h 57m
English
Content preview from High Definition Cinematography, 3rd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CHAPTER 17
Lighting and Exposing for HD
17.1 An HD Camera’s Equivalent ASA Speed, or ISO Rating
I check the speed, or sensitivity, of any High Definition (HD) camera using the same technique I would use when testing a film stock’s ASA (American Standards Association) or ISO (International Standards Organization) rating. Note that the numbers will be the same. When checking a film stock’s ASA speed, I set the camera up facing an 18 percent reflectance gray card and make a range of exposures, noting the setting on my meter for each one. Then I ask the laboratory to make me a middle of the range one-light print. Whichever exposure most exactly matches the tonality of the original gray card I deem to be the correct rating for that particular film ...
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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.