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Choosing and Using a Digital Camera

Learn how to choose and use a digital camera effectively. Discover low-priced options with high resolution and plenty of accessories. Improve your exposure control and learn how to make prints. Explore the advantages and disadvantages of film versus digital cameras. Understand different types of cameras and lenses. Master manual controls and program modes. Gain insights into ease of use and ergonomics. Discover the best storage options and file types. Get tips on image resolution and on-screen and print quality. Find out Kevin's top pick for a 3-megapixel digital camera.

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Choosing and Using a Digital Camera

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  1. Choosing and Using a Digital Camera Kevin Amboe Surrey School District 2006

  2. Low Priced Very High Resolution Lots of Accessories Better Exposure Control Easy to make prints True Point and Click success Prices are coming down Resolutions are increasing Post Processing Can control exposure Can print your own Point and click not always successful Film vs Digital

  3. Types of Cameras • Low End / Integrated • 1 - 3 megapixels • Cell phone • Palm pilot • Mid Range • 3 to 5 megapixels • Zoom Lens • Removable storage • High End • Better Optics • 5 or higher megapixels • Advanced controls • Advanced file saving

  4. Lenses • Glass vs. Plastic • Optical Zoom is critical • Digital Zoom decreases quality • Progressive Zoom • Filter / Protective Adapter • Removable Lenses

  5. Features • Manual Controls • Program Modes • Ease of Use • Ergonomics • Size • Flash - off body • Batteries • Movies and Sound

  6. Manual Controls • Aperature • Fstop - how much light gets in • Lower works better in low light • High provides better focal range • Shutter Speed • Seconds to 1/30 to 1/2000th of a second • Slower allows blurring - Faster for high action

  7. Program Control • Portrait • Sport • Scenery • Macro • Snow • Backlight

  8. Ease of Use / Ergonomics • Charging / Changing Batteries • Hand Position • Downloading • Changing Settings • Choose size for type of use • Larger for sturdy • Smaller for easy carrying

  9. Flash • Must synchronize with shutter speed • Usually good 10 to 20 feet only • Away from camera body is better • Red Eye reduction

  10. Batteries • Double AA Alkaline (1.5V) • Double AA rechargable( 1.35 V) • NiMH • LiOH

  11. More Features • Digital Storage • Image Resolution • File Type

  12. Digital Storage • Floppy, CD, DVD • Compact Flash • Smart Media • Secure Digital / xD • Memory Stick • Ideally want 2 x 512 MB • File Type - JPEG - RAW - TIFF

  13. Image Resolution • 3 Megapixel images will print clearly an 8 x 10 photo • 3 Megapixel image is about 1 Megabyte • For screen/ web projects use lower resolution • 1 Megapixel image is about 150 Kilobytes

  14. Resolution 100% 200% 3200% 400 % 800% If you increase size of decrease resolution, you will get pixelization.

  15. Use Web page / Email On-Screen Ink - Jet 3 x 5 snapshots Photo quality Enlargements PPI 72 72 125 300 600 Resolution Needs

  16. Pixels Per Inch (PPI) relates to the Dots per Inch(DPI) that the printer can print To determine PPI, divide the pixels by the inches. 17 inch monitor is usually 11x13”. A 1200 x 1600 image (1.2MB at 3 Megapixels) would be 1200/11 - thus 109 ppi What is PPI

  17. Onscreen is only 72 ppi so a 15” screen (9x12) only needs (72x9) by (72x12) 648 by 864 Or 559 872 … Just over 1/2 a megapixel We can’t set cameras for onscreen projects to low resolution. If printing a full 8 x 10 photo, then could use 3 megapixel mode. Onscreen Resolution

  18. File Types • JPEG - Joint Photographic Experts Group. Stores files compressed - loses some information • TIFF - Tagged Image File Format • RAW - stores the actual numbers for each pixel - 100% quality - increased file sizes - must be converted to be viewed

  19. Kevin’s Pick • 3 Megapixel • Secure Digital Memory • 2 x 512 MB Storage(extra cost) • USB / Firewire transfer • 10X Optical Zoom • Around $300

  20. Sample Websites • http://reviews.cnet.com/Digital_cameras/4520-7603_7-5023995-7.html?tag=dir • Kodak Support • http://www.kodak.com/eknec/PageQuerier.jhtml?pq-path=2/3/38&pq-locale=en_US • Digital Camera Comparisons • http://www.mycamera.com/index_digcompare.cfm

  21. References • Cnet • Pics4Learning.com • Wikipedia.org

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