Tuesday, November 19, 2013

The Three Pillars of Exposure: Aperture, ISO, Shutter Speed


F 16


F 2.8



1. What part of the body should we closely relate aperture?  We should closely relate aperture to the eyes in our bodies.
2. Finish this sentence - the smaller the Aperture the less visible the background, the higher the Aperture the more visible the background.
3. In your own words tell me how aperture impacts Depth of Field?
if you have a low aperture, the depth of field will also be low because depth of field is how "sharp" objects are.  Higher aperture correspondingly means high depth of field.


High Shutter Speed


Low Shutter Speed





At the beginning while the sun is still partially up and the courtyard has reasonable light
a.) the dunking booth-medium 
b.) the food eating contest-high 
c.) the rock climbing wall-high
d.) someone working at a booth-medium
e.) the DJ/MC working at the middle of the circle-slow
f.) the Diamonds performance.-medium

Towards the end when there is no sun and has gotten dark enough that you can't see from one end of the courtyard to the other.
a.) the dunking booth-high
b.) the food eating contest-high
c.) the rock climbing wall-high
d.) someone working at a booth-slow
e.) the DJ/MC working at the middle of the circle-medium
f.) the Diamonds performance.-medium

Aperture Priority mode-camera automatically sets shutter speed, while you set the aperture.
Shutter priority mode-you set shutter speed and the camera automatically sets the Aperture
Manual mode-you set both the aperture and shutter speed manually.


ISO 200



ISO 3200



Using a high ISO at a night football event will let more light in and it will be almost as clear as a game in the afternoon when the sun is up.
The author said to use low ISO when there is a lot of light.
The author said to use high ISO when there is little light.

F 4 1/250  still blurry at 1/125
F 5.6 1/125  blurry at 1/125
F 8 1/60 much clearer at 1/125
F 11 1/60  almost perfect at 1/125
F 16 1/30  dark background at 1/125
F22 1/15 can barely see at 1/125

At low shutter speed, the people in the photos are blurry.  To combat this problem, he should only take pictures with low shutter speeds of very still (if at all in motion) objects.
The lowest shutter speed a photographer can hand-hold the camera without a tripod is probably 1/30 sec.
I did pretty well on the quizzes.  I understand the trio more now.  

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