1. You’re in a dark room taking pictures with flash. When you change your aperture and ISO sensitivity, the exposure changes. However, no matter what you set your shutter speed to, the exposure stays the same. Why? 2. Most cameras have direct flash – name two reasons why direct flash is bad. Week 7 Quiz Week 7 Quiz Typical direct flash picture
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1. You’re in a dark room taking pictures with flash. When you change your aperture and ISO sensitivity, the exposure changes. However, no matter what you.
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1. You’re in a dark room taking pictures with flash. When you change your aperture and ISO sensitivity, the exposure changes. However, no matter what you set your shutter speed to, the exposure stays the same. Why?
2. Most cameras have direct flash – name two reasons why direct flash is bad.
Week 7 QuizWeek 7 Quiz
Typical direct flash picture
Typical direct flash picture
Lenses
LensesLenses define 2 important things:• Angle of view (focal length)• Aperture
Angle of viewCamera sees a “cone” of vision, measured by the angle of the cone
Narrow angles of view see very little, but the subject is big
Wide angles of view see a lot, but the subject is small
To get the “35mm equivalent” focal length, multiply your actual focal length by the camera’s crop factor
When we talk about focal lengths, we’ll assume they are “35mm equivalent”
Focal length rangesTwo types of lenses: Zooms (variable focal length) and Primes (fixed focal length)
Different focal lengths are useful for different things
Standard rangeStandard range• Covers most commonly used focal lengths, 28mm/wider, 70mm/longer• Good general purpose lens• Standard 18-55 “kit” lens is a standard range zoom 38mm38mm
Focal length rangesTwo types of lenses: Zooms (variable focal length) and Primes (fixed focal length)
Different focal lengths are useful for different things
TelephotoTelephoto• Gives a very narrow angle, 70mm and beyond• Large magnification for faraway subjects• Useful for sports, wildlife
320mm320mm
Focal length rangesTwo types of lenses: Zooms (variable focal length) and Primes (fixed focal length)
Different focal lengths are useful for different things
UltrawideUltrawide• Gives a very wide angle, 24mm or wider• Can cover extremely large objects in confined spaces• Useful for landscapes, architecture
19mm19mm
Tools for the jobWhat focal length would you use for a huge building?
What focal length for shooting sports from the sidelines?
Covering a protest?
Taking a portrait?24mm110mm
Tools for the jobWhat focal length would you use for a huge building?
What focal length for shooting sports from the sidelines?
Covering a protest?
Taking a portrait?310mm70mm
24mm 39mm
70mm
Tools for the job
Angle of view goes hand-in-hand with subject distance