digital camera overview
DESCRIPTION
Digital Camera Overview. IT 130 Web 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 - PowerPoint PPT PresentationTRANSCRIPT
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Digital Camera Overview
IT 130Web Graphics and Multimedia
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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
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Digital Camera Overview Image preview capabilities
Image downloaded to a computer
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Digital Camera Advantages Reusable
Instant preview of image
After download, image may be edited
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Digital Camera Advantages Image sent via e-mail or posted to
websites without compromising quality
Reduced film and development costs
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Digital Camera Overview
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Image Compression Quality and file size are affected
Reduces memory required per image
Uncompressed image – 10MB
Standard card size 8-16 MB
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Image Compression Compression levels can be adjusted
on the camera or after downloaded
Image cannot be uncompressed
JPEG most common compression format
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Image Compression
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Image Compression
Low compression File Size 68KB
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Image Compression
High compression File Size 11KB
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Image Compression Smaller file sizes desired for
Internet
TIFF format better at compression with minimal quality effects
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Image Resolution Quality and file size also affected
Directly related # of pixels on CCD
More pixels, higher the resolution
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Image Resolution
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Image Resolution
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Image Resolution
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Pixels Smallest piece of info on digital
image
800 x 600 resolution = 480,000 pixels
1024 x 768 resolution = 786,432 pixels
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Pixels Most current cameras – 2048 x
1532
Over 3 million pixels (3 Mega Pixels)
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Pixels Camera’s CCD is made up of pixels
Each pixel is a tiny light sensor – detects light & color levels
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PixelsExample: 12 x 12 resolution = 144 pixels
Low resolution = limited detail
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Camera-Computer Transfer Serial port or USB port
Serial port uncommon and slow
USB faster, but newer technology
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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
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Camera-Computer Transfer
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Storing, Viewing & Printing Storage requirements often
neglected
Hard drive failures
CD burner possible alternative
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Storing, Viewing & Printing Photo Album Software
Digital Photo Frame - Ceiva
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Storing, Viewing & Printing Online – shutterfly.com
TV – low quality
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Storing, Viewing & Printing Printing – Shutterfly.com and
Ofoto.com
Personal printer
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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
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Resources www.dcresource.com www.imaging-resource.com www.steves-digicams.com www.digicamera.com www.digital-camerastore.com