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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


  • Digital Cameras 101Teresa Knapp Gordon, NBCTLibrary Media SpecialistJefferson Elementary

  • Digital Camera BasicsPixelsSensor SizeStorage OptionsZoom-Optical vs. DigitalInterfaceDPI and PPI

  • PixelsDigital Images are made up of small squares, called pixels

  • PixelsPixel Count is the number of pixels that go into making an imageThe higher the pixel count, the better the imageMost digital cameras today have between 1 and 14 megapixels (million pixels)

  • Sensor SizeMost 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.

  • Sensor SizeNormal digital camera sensor size operates like less than ISO 400 speed film.

  • Storage OptionsMemory StickCompact FlashSDMultimediaXD

  • Storage OptionsCompact 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.

  • Storage OptionsMultimedia - 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

  • Zoom-Digital vs. Optical

  • Zoom-Digital vs. OpticalMost cameras have bothOptical zoom retains the image quality while zooming because the lens is changing focal length and magnificationDigital zoom basically crops the image and enlarges the cropped portion

  • Digital Camera InterfaceSerial - 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.

  • PrintersYour photos will only be as good as your printer quality allows them to beIf you have a state of the art camera and an antique printer, your photos will not look goodLots of options-Commercial Printing, Online printing, New Photo printers

  • Good Resources for Choosing a Digital Camera

  • Lets Take a Break and Digest All of That Information-10 minutes

  • Now That I Have a Camera, How Do I Use It With My Class?Writing:

  • More IdeasScience

  • You Are Only Limited by Your ImaginationThere are tons of resources on the Internet for using cameras in educationHere are a few of my favorites:

  • A Few More some time and explore-Be sure and note your favorites

  • Remember in LRSD you must have a signed consent on file for PhotosForms are online and I suggest having them done at registration.They are available in English and Spanish

  • Goals for the HourCreate using digital camerasBuild 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?

  • My Contact InfoJefferson ElementaryPhone-447-5006Email: [email protected]

  • BibliographyWebpage: Accessed June 2008