Aperture & Shutter speed & ISO

Aperture

F2.8

 F16

1. We should closely relate aperture to the pupil (inside the eye).

2. The smaller the aperture diaphragm, the higher the f-number.

3. The aperture controls the depth of field, in other words it controls whats blurry inside the picture by the amount of light that the camera captures. A larger aperture means a smaller f-number, which gives a blurry background to focus on the photo's subject. A smaller aperture means a larger f-number, which gives a more clear background. 

Shutter Speed

low shutter speed

high shutter speed

During the day

a) a booth in the middle of the yard near the tree - low

b) a food booth outside under one of the red awnings - low

c) the stars performance inside the gym - high

d) students dancing near the center of the courtyard - high

e) people streaming in from the doors - low

f) the basketball where students are shooting baskets - high

At night

a) a booth in the middle of the yard at night - low

b) a food booth outside under one of the red awnings - low

c) the stars performance inside the gym - high

d) students dancing near the center of the courtyard - middle to capture light with your subject's action

e) people streaming in from the doors - low

f) the basketball where students are shooting baskets - middle (same as d)

Aperture Priority- This is when you set the lens aperture and the camera automatically sets the shutter speed.

Shutter Priority- This is when you set the shutter speed and the camera automatically sets the lens aperture.

Manual- This is when you set both the lens aperture and shutter speed manually.

ISO

ISO 200

ISO 3200

1. Shooting at a higher ISO captures quick movement/motion in a dim setting.

2. The author suggested to use low ISO in well lit settings to retain the most detail and have high image quality.

3. The author suggested to use high ISO in a place where there is not enough light for a camera to quickly capture an image. It also freezes motion for good action shots.

DSLR camera

Aperture settings: f- 2.8, 4, 5.6, 8, 11,16, 22

Shutter speed: 1 second, 1/160 second, 1/40000 second

ISO: 100, 200, 400, 800, 1600 3200, 6400, 12800, 25600