Digital Camera IIAdvanced Photo EditingAnn Howden

UEN Professional Development

Steps to Digital Photography: Creating a Digital Workflow

Input: Taking Pictures Digital camera, Scanner, Digital Video

Image Processing Organization

• Transfer to computer, Back up photos, Sort by category Edit or manipulate the image with editing software

Output (and Organization) Print, display, and share images

Digital Image Basics

Digital Images are made up of Pixels Pixels are small units of light that make up the

image. Each range of light is given a number to

represent a color.• White = 0• Black = 255• All other colors fall in between this range

When you edit a photo in Photoshop, most of the work you will do is “pixel-level editing”.

Image segment enlarged to 3200%

Digital Image Basics

Quality and Size of ImageDepends on the amount of pixels used

to create the imageReferred to as Resolution

• The amount of pixels per inch determines the resolution

• Example: 300 ppi means there are 300 pixels per square inch of picture

A tip to remember…

No matter the size of picture file, a digital image will usually look good on a computer screen. A 1 megapixel camera will display pictures on a

computer screen as big as 8 x 10 that look great.

Megapixels really matter when you want to print your images. A 2 megapixel camera will make beautiful 4 x 6 prints,

but really should not be printed any bigger.

Final Size Web, E-mail or Presentation

72 ppi

Home Printing

150 ppi

Professional Printing

300 ppi

4x6 288 x 432 =

124,416 pixels

600 x 900=

540,000 pixels

1,200 x 1,800 =2,160,000 pixels

(2 mp)

5x7 360 x 504 =

181,440 pixels

750 x 1,050 =

787,500 pixels

1,500 x 2,100 =3,150,000 pixels

(3 mp)

8x10 576 x 720 =

414,720 pixels

1,200 x 1,500 =1,800,000 pixels

(2 mp)

2,400 x 3,000 =7,200,000 pixels

(7 mp)

Photo And Pixel Size

Resolution Guidelines

Photo output Photo dpi

Web/on-screen use 72 dpi

Screen printing 70-130 dpi

Inkjet printer on copy paper 150 dpi

Photo quality inkjet paper 240-300 dpi

Laser printer(300-1200dpi) 100-200 dpi

Offset printing-newsprint 150-200 dpi

Offset printing-coated paper 240-300dpi

Stitzer

Megapixel Printing Chart (If printing at home)

Camera Resolution Max High Quality Print Size

1.3 megapixels 4 x 6 print

2 megapixels 5 x 7 print

3.3 megapixels 8 x 10 print

4 megapixels 11 x 14 print

5 megapixles 12 x 16 print

6.3 megapixels 14 x 20 print

8 megapixels 16 x 22 print

Editing Pictures

Editing/Compressing a digital image alters the amount of pixels in an image.

• Cropping an image reduces the amount of pixels. Depending on the amount of pixels cropped and the print size, you may or may not see a difference in the image.

• Enlarging an image requires the computer to add pixels where none existed. This will cause a pixelation or distortion in your image.

Enlarging a small file

When you try to enlarge a small file, there isn’t enough information so the computer tries to comepnsate.

This leads to your image becoming pixelated

Cropping a large file

3008 pixels wide x 2000 pixels high

1376 wide x 1341 high

Cropping a photo removes information. Once you crop and save, you cannot go back to the original file size.

Tips to Remember with Photoshop Elements 3

Tip #1: Plan your project before you start editing.

Tip #2: Remember that Photoshop works with your ORIGINAL photo.

Tip #3: Always do a “save as” or a “duplicate layer” before starting a project.

Tip #4: Practice, does indeed, make better.

Photoshop Project ExamplesThere are many different types of

projects you can complete using Photoshop Elements.

Photo Editing Collages Advertisements, brochures, flyers Scrapbook pages Creative notes home to parents

Curriculum Links withPhotoshop Elements Applied Technology (career and Technical)

Curriculum Improve communication with students,

parents, faculty and staff Flyers, brochures, project announcements Websites Student spotlights

Student generated projects as well as teacher generated

Digital Camera IIAdvanced Photo EditingAnn Howden

UEN Professional Development