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Digital Cameras By: Karin Varley. Table of Contents What is a Digital Camera? When did it all begin? Digital Cameras through the years How does a Digital.

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Presentation on theme: "Digital Cameras By: Karin Varley. Table of Contents What is a Digital Camera? When did it all begin? Digital Cameras through the years How does a Digital."— Presentation transcript:

1 Digital Cameras By: Karin Varley

2 Table of Contents What is a Digital Camera? When did it all begin? Digital Cameras through the years How does a Digital Camera work today? Conclusion

3 What is a Digital Camera? Captures and stores images digitally Digital has no film. Digital has no film.

4 When did it all begin? First began with NASA Viking Orbiter and Voyager

5 More about NASA.. By 1974, new image capture  CDD arrays (100X100 pixels) lowered readout noise  800X800 Pixels from Hubble Space Telescope  Pixel: smallest element of images on CRT  First Camera cost over $30,000!

6 Timeline of Cameras 19891990199319941997 MavicaDycamDaVinciDeltisHitachi Xap Shot1992199419951997 DCS 200Quick TakeRicohCybershot

7 How to use a Digital Camera: The Basics CCD or CMOS? Light is converted into electrical charge CCD (Charge Couple Device) CCD (Charge Couple Device) CMOS (Complementary Metal Oxide Semiconductor). HCMOS (Complementary Metal Oxide Semiconductor). H How it’s transferred into digital!How it’s transferred into digital! CCD: transported across. Read on corner. Creates high quality, low-noise.Creates high quality, low-noise.

8 CCD and CMOS Analog-to-digital converter: pixels to digital CMOS: Pixel can be read individually CCDs: Transport charge without distortion.

9 Resolution and Capturing Color Resolution measures the detail of images. Filtering uses light of primary colors.Filtering uses light of primary colors. Added for the full spectrum of colors. Interpolation: permanent filter; breaks up photosites.Interpolation: permanent filter; breaks up photosites. Bayer filter pattern:Bayer filter pattern: Red and green alternate with blue and green filters Red and green alternate with blue and green filters

10 More About Capturing Color Separate sensors have different filters. Light’s directed with a beam splitter. Sensors respond to image’s primary colors.

11 Viewing Pictures LCD screen: View pictures right away.View pictures right away. Leaves the CCD sensor and viewed.Leaves the CCD sensor and viewed.

12 Storage You can store pictures on: Serial, parallel, USB Port, SCSISerial, parallel, USB Port, SCSI Removable storage ports.Removable storage ports. Built in memory, flash cardsBuilt in memory, flash cards floppy disks, CD’s and DVD’s floppy disks, CD’s and DVD’s

13 Why Digital is the way to go.. Digital Cameras are completely filmless. NO time spend waiting to develop No chemicals involved. Stored on the camera themselves. Battery operated Alter pictures any way you want Reduce red eye, change eye color, crop pictures, etc..Reduce red eye, change eye color, crop pictures, etc..

14 References How Stuff Works: How a Digital Camera Works http://electronics.howstuffworks.com/digital -camera.htm

15 The End Home

16 Digital Cameras By: Karin Varley


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