digital camera overview
Post on 17-Jan-2016
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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
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