Adobe Photoshop
An Introduction toDigital Photography
Why Go Digital?
No costs for film, chemicals, paper. No need for darkroom space or
darkroom technician. Immediate access. Interface with computer
publishing tools.
Is There a Downside?
High initial expense. May be less image quality than
film. Archiving file format for future use
is impossible to anticipate. Complexity of equipment.
Types of Digital Cameras Fixed-location studio camera (advertising)
$50,000 + High-resolution image files (80-200 MB)
Print photojournalism camera $5,000 + Good resolution (5 -15 MB)
New-media capable camera $700 + Resolution adequate for professional web use, CD-ROMs,
or prints to 8 x 10 (around 5 MB). Amateur camera
$200+ Resolution adequate for web use, or snapshot-size
prints.
The Digital Darkroom
How is “image editing” software used? Image file management. Retouching to correct deficiencies. Image processing for production
environment. Image manipulation and transformation. Image creation.
Some Examples...
File Management - 1
Changing from 24-bit to 8-bit (system palette).
24-bit 8-bit
File Management - 2
Resizing to change file size and/or resolution.
Retouching to Correct Deficiencies -1
Sharpen
Before After
Retouching to Correct Deficiencies - 2
Correct color balance.
Before After
Image Processing for Production - 1
Adding text to image.
Image Processing for Production - 2 Preparing image for
photomechanical reproduction.
Image Manipulation and Transformation - 1
Arbitrary Color.
Image Manipulation and Transformation - 2
Pointillize
Image Creation - 1
Paint/Draw on Image.
Image Creation - 2
Compositing/Montage: for documentary/communications media.
Image Creation - 3
Compositing/Montage: for illustration and fine art creation.
Image Creation - 4
Compositing/Montage: for illustration and fine art creation.