Shutter Apareture

The Mechanics Behind the Lens

The Exposure Triangle

Aperture

Shutter Speed

ISO sensitivity

I S O

Aperture

Shutter Speed

ISO sensitivity

Aperture & Shutter Speed

Work together during a capture to control the amount of light entering the camera to obtain a properly exposed picture

Shutter Speed 1/500 1/250 1/125 1/60 1/30

F/stop f/2.8 f/4 f/5.6 f/8 f/11

at f/5.6

at 1/125 sec.

Aperture

Mechanical opening that regulates how much light enters the camera through the lens.

Aperture

The physical opening of the camera lens

Called F-Stop

Higher the “F” number the smaller the opening

F/22 small

F/1.2 big

Aperture

Controls Depth of Field(DOF)

DOF how much is in focus front to back.

F/22 large DOF

F/1.2 very small DOF

F/18

F/5.6

Aperture

Shallow DOFAllows you to isolate

a subject from a distracting background taking the subject out of context

Aperture

Long DOFAllows you to show

the background or foreground to place your subject into context of what is in the surrounding area

Shutter Speed

The time duration that the sensor can record light

Measured in seconds

1/1000 fast

1/25 slow

2 very slow

Shutter Speed

Controls motion

Fast = Freeze

Slow = Blur

Speeds slower than 1/30 are subject to camera shake.

Control camera shake by:

Holding properly

Bracing

Using a support

Finding more light to allow a faster shutter speed

Shutter Speed

Aperture and Shutter Speed

Are inversely proportional

Each have trade offs

Aperture and Shutter Speed

Low f/stop means more light and a faster shutter but less DOF

Slow shutter means more light and higher f/stop but can cause motion to blur

Aperture&

Shutter SpeedAutomatic SettingCamera Adjusts to

Best ExposureCan Be Modified for

Specific SituationsSportNightPortraitManual Adjustment

ISO

Increases the sensitivity of the sensor.

Faster shutter speeds

Smaller apertures

Trade off - NOISE

Picture Quality & File Size

Quality

Image Qualityrefers to how much compression is applied to the photo to save on storage space.

Use HIGHEST QUALITY

** Not all cameras have this setting

Low Quality Best Quality

Image Size

Refers to how many pixels wide by high the actual capture.

3872x2592 (FINE)*

2896x1944 (NORM)*

1936x1296 (BASIC)*

Turns down the megapixels

*Nikon D80 10.2mpx camera

Quality x Size = File Size

Assume a 2gb card

at highest quality

File size Qty stored

4.8 mb

2.7 mb

1.2 mb

~ 266 fine

~ 466 norm

~ 503 basic

Shoot inFine or Normal

FormatYour photo could end

up on a poster, or the web, or a large

format banner

Don't chooseRAW format

Let's Look at the Equipment

D80CoolPix

D 80

DSLR

10.2 mpx

Interchangeable

lenses

Faster shooting

Requires some additional training

D 80Power

Mode Selector

Shots Remaining

Cool Pix

Point & Shoot

8mpx

Wide angle lens

Comparatively easy to use

Lightweight

Cool Pix Tips

Avoid using the flash.

Use the self timer's 2 second delay to help

prevent camera shake in low light.

Keep an extra set of batteries on hand

(2 AA)

Cool Pix

Power

OK-Mode Menu

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