October 2012
Beginner to intermediate
304 pages
7h 53m
English
Content preview from CANON DSLR: The Ultimate Photographer's GuideBecome 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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Aperture and Depth of Field
See also Shutter Speed, Reciprocity.
When we refer to the “aperture” of a lens, we are speaking on an iris, similar to that in the pupil of an eye, that opens or closes, allowing light to enter and strike the optic nerve,sending impulses to the brain. A lens aperture works much the same, except it will allow as much light to enter as we tell it to allow. While our brains can automatically compensate for light or dark (a human with good vision is capable of seeing light as dim as a trillionth of a watt), should we tell the aperture to allow too much light for the ISO we’ve set the chip to record, the result will be an ...
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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.