adobe photoshop an introduction to digital photography

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.