digital cameras 101

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Digital Cameras 101 Teresa Knapp Gordon, NBCT Library Media Specialist Jefferson Elementary

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Digital Cameras 101. Teresa Knapp Gordon, NBCT Library Media Specialist Jefferson Elementary. Digital Camera Basics. Pixels Sensor Size Storage Options Zoom-Optical vs. Digital Interface DPI and PPI. Pixels. Digital Images are made up of small squares, called pixels. Pixels. - PowerPoint PPT Presentation

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Page 1: Digital Cameras 101

Digital Cameras 101

Teresa Knapp Gordon, NBCTLibrary Media SpecialistJefferson Elementary

Page 2: Digital Cameras 101

Digital Camera Basics

Pixels Sensor Size Storage Options Zoom-Optical vs. Digital Interface DPI and PPI

Page 3: Digital Cameras 101

Pixels

Digital Images are made up of small squares, called pixels

Page 4: Digital Cameras 101

Pixels

Pixel Count is the number of pixels that go into making an image

The higher the pixel count, the better the image

Most digital cameras today have between 1 and 14 megapixels (million pixels)

Page 5: Digital Cameras 101

Sensor Size

Most digital cameras have a 1/2.7” or 1/1.8” sensor.

This affects the picture quality-the larger the sensor size, the less “noise” in the photo and the better it looks.

Page 6: Digital Cameras 101

Sensor Size

Normal digital camera sensor size operates like less than ISO 400 speed film.

Page 7: Digital Cameras 101

Storage Options

Memory Stick Compact Flash SD Multimedia XD

Page 8: Digital Cameras 101

Storage Options

Compact Flash (CF) - The original memory card. 42mm x 36mm x 3mm. Somewhat larger than the others, but used on all high end DSLRs. Available in capacities up to 2GB. There are also miniature hard drives (Microdrives) with almost the same form factor as CF cards (CF type II, 5mm thick)) which are available in capacities from 340MB to 4GB. Microdrives used to be cheaper than solid state CF cards, though there is not a big difference today up to about 1GB. The 4GB Microdrives are actually cheaper than the 2GB CF cards though. Of course prices change pretty fast these days! Overall CF cards tend to be cheaper than any of the other forms of solid state memory - though this too could change. CF cards and microdrives contain their own disk controller, so that makes the camera electronics simpler.

Secure Digital (SD) - Very small - about 24mm x 32mm and 2mm thick. They have a built in write protect switch to prevent accidental erasure and certain encryption capabilities of little interest to digital camera owners.

Page 9: Digital Cameras 101

Storage Options

Multimedia - Same size as SD but with less features and no encryption capability. There are some that can be used in some SD cameras but they aren't 100% compatible with SD cards in all applications.

Smart Media - Thinner than CF cards, but lacking an on-card memory controller. Despite the name, they're pretty dumb!

Memory Stick - Introduced by Sony and used only by Sony(?)

XD - Developed and used by Fuji, Olympus and Toshiba - even smaller than SD. 20mm x 25mm by 1.7mm thick

Page 10: Digital Cameras 101

Zoom-Digital vs. Optical

Page 11: Digital Cameras 101

Zoom-Digital vs. Optical

Most cameras have both Optical zoom retains the image quality

while zooming because the lens is changing focal length and magnification

Digital zoom basically crops the image and enlarges the cropped portion

Page 12: Digital Cameras 101

Digital Camera Interface

Serial - The earliest digital cameras had a serial interface, but no current cameras use this since it is so slow

USB 1.1 - USB was the first widespread high speed method of data transfer from cameras. It is theoretically capable of transfer speeds up to 11 megabits/second (note megabits not megabytes)

USB 2.0 - A development of USB but much faster - up to 480 megabits/second. USB devices are compatible with USB1.1 ports on a PC, but will only work with them at the lower data rate.

IEEE 1394 (Firewire) - Though this is an older interface than USB, it was originally only really used much on Apple computers. It's capable of high speed transfer (400 megabits/second) and it's now found on some PCs or it can be added to them via a plug-in card. More common on digital video cameras than still digital cameras.

Page 13: Digital Cameras 101

Printers

Your photos will only be as good as your printer quality allows them to be

If you have a state of the art camera and an antique printer, your photos will not look good

Lots of options-Commercial Printing, Online printing, New Photo printers

Page 14: Digital Cameras 101

Good Resources for Choosing a Digital Camera http://wneo.org/hotlists/digcam.htm http://www.imaging-resource.com/ARTS/B

UY/BUY.HTM http://www.steves-digicams.com/

Page 15: Digital Cameras 101

Let’s Take a Break and Digest All of That Information-10

minutes

Page 16: Digital Cameras 101

Now That I Have a Camera, How Do I Use It With My Class? Writing: http://drscavanaugh.org/digitalcamera/writi

ng_applications.htm Math: http://drscavanaugh.org/digitalcamera/mat

h_applications.htm

Page 17: Digital Cameras 101

More Ideas

Science http://drscavanaugh.org/digitalcamera/lab.

htm Projects: http://drscavanaugh.org/digitalcamera/

digital_camera_projects.htm

Page 18: Digital Cameras 101

You Are Only Limited by Your Imagination There are tons of resources on the

Internet for using cameras in education Here are a few of my favorites: http://www.geocities.com/Athens/

olympus/7123/camera.html http://www.adobe.com/education/digkids/

lessons/

Page 19: Digital Cameras 101

A Few More

http://www.chiff.com/art/photo/kids.htm http://www.tech4learning.com/services/

teachingwithdigitalcameras.htm http://wneo.org/hotlists/digcam.htm www.fotoflexer.com www.piknik.com Take some time and explore-Be sure and note

your favorites

Page 20: Digital Cameras 101

Remember in LRSD you must have a signed consent on file for Photos Forms are online and I suggest having

them done at registration. They are available in English and Spanish

Page 21: Digital Cameras 101

Goals for the Hour

Create using digital cameras Build an ABC book using pictures that you

and your partner take of either you representing the shape of the letter, or an object that represents the letter.

Questions/Help?

Page 22: Digital Cameras 101

My Contact Info

Jefferson Elementary Phone-447-5006 Email: [email protected]

Page 23: Digital Cameras 101

Bibliography

Webpage: http://photo.net/equipment/digital/basics/ Accessed June 2008