aaUEN Professional Development Digital Cameras in the Classroom Utah Education Network - :// Lee...

aaUEN Professional Development

Digital Cameras in the Classroom

Utah Education Network - http://www.uen.org

Lee Baker

[email protected]

(801) 585-7905


Why Go Digital? Resource from - http://www.shortcourses.com/

Saves you money by not buying rolls and rolls of film and paying

for development.

Saves you time you don't have to make two trips to the store to

drop off and then pick up.

Instantly see your pictures No more disappointments a day or two later

when your film is developed.


View images before they are printed if you don't like what you see, edit them to

perfection or delete them.

Doesn't use the toxic chemicals that often end up flowing down the drain and into

our streams, rivers, and lakes.

No more waiting to finish a roll before having it processed. (Or

wasting unexposed film when you can't wait.)

Why Go Digital? Resource from - http://www.shortcourses.com/


Digital Cameras in School

Supplement Curriculum Add to or supplement Fieldtrips

Go on an electronic field trip - show photos of a distant site. Highlight fieldtrip spots not to miss ahead of time. Review field trips with pictures to show all students the

sights, discuss learning, share with other groups. Create assignments with pictures and processes.

For example: lab equipment, measurements, instruments, pictures for vocabulary or reading lessons.

Use with lenses or other optics to make images available to the entire class. For examples microscopes, telescopes, etc.



Student Projects Enhance student project with images.

Reports, science projects, multimedia shows, etc. Write stories or poems to go a long with pictures. Pictures that Reinforce of real world examples.

Angle on a house, shapes etc. Capture and identify species

Find species located close to home or school Create a local history of sites in their city. Create a time lapse presentation

Bean sprout or caterpillar transformation.



Assessment Digital images can enhance a student portfolio.

Both electronic and paper based

Use digital images to enhance tests and other assessment methods.



Support Take pictures of students and create a Student

information file. Create a photo inventory of school property for

property records. Create posters or multimedia displays

of student activities and work for open house, awards night, fair displays etc.

Take pictures for school newspapers yearbook. Customize your displays and bulletin boards

Use photos from your school, lab, classroom, or images of student performances.


Classroom Examples:

Summer Learning High Adventure Projects

Why Cells Work - Power Point

Surweb - Egg Embryology and Production

Surweb - Box Elder, Scenic Attractions, Bear River Migratory Bird Refuge

The Powerful Math Curse of Room 30

The Butterfly and Hummingbird Garden at Longfellow School


Digital Image Basics

Digital Photos/Bitmap Image digital images are made up of tiny

squares called Pixels.


Digital Image Basics Cont.

Quality and Size of Image Depends on the amount of pixels used to create

the image. Referred to resolution

300 dpi same as 1inch = 300 pixels (when printing the image) When you reduce the size of an image you

reduce the number of pixels. When you image is enlarged you computer adds

pixels. This can result in your picture looking pixilated.


Digital Image Basics Cont.

Print v.s. Computer Screen If Printing the picture the more pixels the better.

Generally you want at between 150-300 dpi. If using the picture on a computer screen you

want it to fit on the monitor without scrolling. Common computer resolution is 800 pixels by 600 pixels. If you image is bigger that that reduce the image size.

Using your image on the web. The less pixels the quicker the download.


3 Steps to Digital Photography:

Input Digital Camera, Scanning, Digital Video

Image Processing Edit or manipulate the image with image editing software

Output Display, distribute or storage of images. For example

printing, email, insert in to documents, store for later.

INPUT IMAGE PROCESSING OUTPUT


How the Digital Camera Works:

Image Sensor Instead of film the digital

camera uses an image sensor, usually a CCD or Charge-Couple Device.

The image sensor is made up of thousands to millions of pixels that record you image.


Exposure When you press the shutter button on the

camera, light comes through the lens and each pixel records the brightness of light that falls on it. The more light that hits the pixel the brighter value the pixel records.

Once the brightness value is recorded it is converted to a digital number and saved on the memory of the camera. The digital number allows the image to be reconstructed on screen or in a print.



Photo Color The original image is only

recorded as black and white (using brightness).

To add color Red, Green, and Blue filters are placed over the image sensor to create a color photo.



Types of Digital Cameras:

Point and Shoot The least expensive digital

cameras below $300. Fully automatic and little

creative control-that's why they are called "point and shoot."

Because of the low resolution of many of these cameras, printed output is limited to about 4 x 6 inches or so.

The images are ideal for Web pages, e-mail attachments, and small reproduction sizes in newsletters and other documents.


Types of Digital Cameras:

Multi-Megapixel Camera Quickly becoming the most

common digital camera sold. Over a million pixels in

their image sensors. Cost between $300-$1000 depending on the

amount of mega pixels. Give some creative controls. Appeals to serious photographers who like to have

creative control of their camera's settings and make prints up to about 8 x 10 in size.


Types of Digital Cameras:Professional Cameras 35mm or APS SLR cameras

that have been adapted to digital photography

Cost from $3000 to $20,000 and more. These cameras often use 3 image sensors, one for

each color so they capture great color and resolution. At least 2-million pixels in their image sensors and

usually many more. One huge advantage is that most of the features (and

accessories designed for the film versions also work with the digital versions.


Camera Elements:Image Sensor - Resolution The number of pixel on an image sensor.

Lower resolutions such as 640 x 480 are perfect for web publishing, e-mail attachments, small prints, or images in documents and presentations.

Higher resolutions, over 1 million pixels, are best for printing photo-realistic enlargements larger than 5" x 7".

Optical v.s. Interpolated Resolution The optical resolution of a camera is the number of pixels

on an image sensor that can be counted.

Interpolated resolution, adds pixels to the image to increase the total number of pixels.


Aspect Ratio Image sensors have different aspect ratios-the

ratio of image height to width. The aspect ratio determines the shape and

proportions of the photographs you create. To calculate the aspect ratio of any camera, divide

the largest number in its resolution by the smallest number.

Sensitivity An ISO is the speed, or sensitivity to light. The

higher the number the "faster" or more sensitive the sensor is to light.

Camera Elements:


Image Compression Image Compression makes large image files

smaller, most cameras store images in a format called JPEG. This file format not only compresses images, it also allows you to specify how much they are compressed. Less compression gives you better images so you can

make larger prints, but you can't store as many images.

More compression lets you store more images and makes the images better for posting on a Web page or sending as an e-mail attachment. The only problem is that your prints won't be as good.

Camera Elements:


Frame Rate There are two delays built into digital cameras that

affect your ability to respond to fast action when taking pictures. 1 or 2 second refresh rate delay between pressing the

shutter button and actually capturing the image. This occurs as the camera clears the image sensor, and set the correct controls.

The recycle time, occurs when the captured image is processed and stored. This delay can range from a few seconds to half a minute.

Camera Elements:


Image Storage Fixed v.s. Removable Storage The two most common types of removable

storage are Flash Memory Cards and Magnetic disks.

The number of images that can be stored depends on the following: Capacity of the storage devise Resolution of the images taken The amount an type of compression

Camera Elements:


Top 10 Techniques for Better Photos - Kodak

Power Point Resource Gathered From Kodak.com


References

Short Courses -THE Digital Photography Resource

Kodak Top 10 Techniques – A Guide to Better Pictures

Digital Cameras in Education Tech4learning – Teaching with Digital Cameras Teacher to Teacher – Ideas for using digital

camera’s in the classroom


Class Project

Class Project End Product Power Point Surweb Show UEN Virtual Tour Web Photo Album (Dreamweaver)

Story Board Project Topic Sequence


Places to Go:University Campus (Walking Tour)

Architecture, Plants, Sculptures, Geology

Utah Museum of Fine Arts Free Admission / Only open until 5:00 p.m. No Flash Photography

Utah Museum of Natural History $6.00 Admission / Only open until 5:30 p.m. No Flash Photography

Red Butte Garden $5.00 Admission / Only open until 5:00 p.m.

Marriott Library A Century of Skiing Exhibit

Fort Douglas/Olympic Village

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