Digital Photo I with ProjectsWeek 2

Aperture (ƒ-stop)

• Determines number of objects in focus.• Larger number equals smaller opening.• Aperture is also referred to as “ƒstop”.• Will make the biggest difference in how

your image turns out.• Common range is ƒ/1.4 to ƒ/22.

Aperture – ƒ/1.4

Aperture – ƒ/2.8

Aperture – ƒ/4.5

Aperture – ƒ/7.1

Aperture – ƒ/13

Aperture – ƒ/20

Aperture – ƒ/40

ISO or “Film Speed”

• Referred to as film speed in the film era, ISO now refers to the light sensitivity of the camera sensor.

• Common range is ISO 100 to ISO 3200, but may go from ISO 25 up to ISO 102,400

• Higher number means more sensitivity, thus needing less light.

• Higher number means more digital noise in your image.

• Always use the lowest possible number.

ISO - 100

ISO - 200

ISO - 400

ISO - 800

ISO - 1600

ISO - 3200

ISO - 6400

Shutter Speed

• Measured in time increments, such as 1/8000, 1/500, 1/125, 1/6, 1 sec, 30 sec.

• Has the ability to freeze motion or let it be seen.• One of the three factors that determine a proper

exposure.

Shutter Speed – Fast – 1/500

Shutter Speed – Fast – 1/250

Shutter Speed – Slow – 7.1min

Shutter Speed – Slow – 20sec

Aperture – ƒ/2.2

Aperture – ƒ/7.1

Aperture – ƒ/22