Digital Camera Overview

IT 130Web Graphics and Multimedia

Digital Camera Overview Images are recorded on CCD

(Charged Coupled Device) ; not film

Light collected by CCD converted to data

Data stored on camera’s memory card

Digital Camera Overview Image preview capabilities

Image downloaded to a computer

Digital Camera Advantages Reusable

Instant preview of image

After download, image may be edited

Digital Camera Advantages Image sent via e-mail or posted to

websites without compromising quality

Reduced film and development costs

Digital Camera Overview

Image Compression Quality and file size are affected

Reduces memory required per image

Uncompressed image – 10MB

Standard card size 8-16 MB

Image Compression Compression levels can be adjusted

on the camera or after downloaded

Image cannot be uncompressed

JPEG most common compression format

Image Compression

Image Compression

Low compression File Size 68KB

Image Compression

High compression File Size 11KB

Image Compression Smaller file sizes desired for

Internet

TIFF format better at compression with minimal quality effects

Image Resolution Quality and file size also affected

Directly related # of pixels on CCD

More pixels, higher the resolution

Image Resolution

Image Resolution

Image Resolution

Pixels Smallest piece of info on digital

image

800 x 600 resolution = 480,000 pixels

1024 x 768 resolution = 786,432 pixels

Pixels Most current cameras – 2048 x

1532

Over 3 million pixels (3 Mega Pixels)

Pixels Camera’s CCD is made up of pixels

Each pixel is a tiny light sensor – detects light & color levels

PixelsExample: 12 x 12 resolution = 144 pixels

Low resolution = limited detail

Camera-Computer Transfer Serial port or USB port

Serial port uncommon and slow

USB faster, but newer technology

Camera-Computer Transfer Some cameras use a standard 3.5

disk

Many new digital cameras USB support only

Another option is memory card with memory card reader

Camera-Computer Transfer

Storing, Viewing & Printing Storage requirements often

neglected

Hard drive failures

CD burner possible alternative

Storing, Viewing & Printing Photo Album Software

Digital Photo Frame - Ceiva

Storing, Viewing & Printing Online – shutterfly.com

TV – low quality

Storing, Viewing & Printing Printing – Shutterfly.com and

Ofoto.com

Personal printer

Storage Media Removable memory card

Smart Media Compact Flash (Type I & II) Stick memory

3.5 disk – 1.44 MB vs. 8-16 MB memory card

128+ MB memory cards available

Resources www.dcresource.com www.imaging-resource.com www.steves-digicams.com www.digicamera.com www.digital-camerastore.com