Beginning Digital Photography

Tuscola CUD #301 Dec. 7, 2006

Presented by W. Eiben

What to Know•What is a Digital Image

• Types of Digital Cameras

• Image Compression and File Format

•Camera Settings

•Downloading Photos

• Editing Photos

• Printing Photos

• Publishing Photos

Pixels

1800 x 1600or

2.88 Million Pixelsor

2.88 MegaPixels

picture element - (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored square or dot).

Pixilation is an effect caused by displaying a digital image or a section of a digital image at such a large size that individual pixels, small single-colored square display elements that compose the image, are visible to the eye.

Types of Digital Cameras•Point and Shoot Cameras

•8 x 10 prints

•3 to 4 Megapixels

•Little Creative Control

•Prosumer Cameras

•8 x 10 prints

•5 to 6 Megapixels

•Advanced Features

•Professional Cameras

•DSLR (Digital Single Lens Reflex)

•6 to 12 Megapixels

•Changeable Lenses

Camera Setup

White Balance

Auto White Balance Incandescent Light Bulb

Tungsten White Balance Incandescent Light Bulb

Correctly Exposed

Under Exposed

Over Exposed

Imager size Pixel array Ideal print sizeMax for fine

detailMax for low

detail

2 mp 1200x1600 4x6" (10x15cm) 5x7" (13x18cm)10x13"

(25x33cm)

3 mp 1536x2048 5x7" (13x18cm) 7x9.5" (18x24cm)13x17"

(33x43cm)

3 mp (dSLR) 1440x2160 5x7" (13x18cm)6.5x10"

(17x25cm)12x18"

(30x46cm)

4 mp 1704x22725.5x7.5"

(14x19cm) 8x10" (20x25cm)14x19"

(36x48cm)

5 mp 1920x25606.5x8.5"

(17x22cm)9x11.5"

(23x29cm)16x21"

(41x53cm)

6 mp 2136x28487x9.5"

(18x24cm) 10x13"(25x33cm)18x24"

(46x61cm)

6 mp (dSLR) 2000x30006.5x10"

(17x25cm)9x13.5"

(23x34cm)16x24"

(41x61cm)

7 mp 2304x30727.5x10"

(19x25cm)10.5x14"

(27x36cm)19x25"

(48x64cm)

8 mp 2448x32648x11"

(20x28cm)11x15"

(28x38cm)20x27"

(51x69cm)

8 mp (dSLR) 2336x35048x11.5"

(20x29cm)10.5x16"

(19x41cm)19.5x29"

(48x74cm)

9 mp 2616x34889x11.5"

(23x29cm)12x16"

(31x41cm)22x29"

(56x74cm)

10 mp (dSLR) 2592x38728.5x13"

(22x33cm)12x17.5"

(31x45cm)21.5x32"

(55x81cm)

Printing

Image Compression

• Lossless Compression

• RAW or TIFF

• Lossy Compression

• JPEG

Least Compression

(less distortion)

Most Compression

(more distortion)

•Typical Picture-Taking Modes

Shutter SpeedFast Shutter Speed – reduces blurring effect

of moving subjects

Slow Shutter Speed – increases blurring effect of moving subjects

ApertureDepth of Field

Small Aperture(large number)

Large Aperture(Small number)

•LCD Display•Immediate Feed back

•Arm Shake•Uses Power

•Can Be Misleading•Hard to Use in Bright Light

•Viewfinder•Conserves battery power

•Not all cameras have them•Can’t take angled shots

•Suffer from Parallax•Can be Blocked by extended lens

Composing A Picture

1. Rule of Thirds

2. The Golden Rule

3. Leading Lines

4. Contrast

5. Framing the Photograph

Identify Point of Interest

Lake and Rock Take up 1/3The dominant object is 1/3

from bottom/top/left or right

Rule of Thirds

•The most important part of the image is near the lower right corner of the picture (the lower right quarter)

Golden Rule

Lines/Elements that lead the eye into the photo

Leading Lines

Object and Background

Contrast

Background is Framed by Foreground Object

Framing the Photograph

Optical Zoom - GoodDigital Zoom - Bad

Flash Options

•No Flash

• Forced Flash

• Fill Flash

•Red-eye Reduction Flash

•Slow-Sync Flash (Night Mode)

•Depress button halfway and hold•Some cameras give exposure info•Some allow focus on multiple objects

Shutter Button Activation

•USB Cable (some cameras require specific software)•Memory Card Reader•Printers with built in card readers

Downloading Images to Computer

PicasaPhotoshop

Others

Image Editing And Printing

Questions