Digital Cameras An Introduction to Digital Cameras and the Basic Parts of a Canon A85
One of the 1st Digital Cameras • This was a digital back created for a popular Nikon Film camera. In 1994, the camera cost about $12,000! It was a 1.5mp (1524x1012 pixels)
Kodak DCS 620 • One of the first 2mp cameras. $10,495
Kodak DCS 760 • One of the first 6mp cameras. July 2000…$25,000. By July 2001, street price dropped to $8,000 to compete with Nikon’s own camera, a D1, and a Canon model, the D30.
Canon A85 Many Canon models are very similar to you class camera. Other manufactures will also be similar.
Not all Camera CCDs are created Equal… A85 APC Sensor
Exposure Mode Controls • Auto (point & shoot) • Program • Shutter priority • Aperture priority • Manual setting
Auto Mode: When you want to take snapshots without worrying about the mechanics of photography, put the camera on Auto. This mode sets all exposure levels automatically, and it usually locks you out of making any minor adjustments manually. This is for general picture taking.
SCN: Exposure and White Balance is selected to match the picture you are taking.
Flash Modes You will not have control over the flash in all modes on your camera. In Auto, the camera usually will only allow AUTO FLASH (the camera decides when to flash) or FLASH OFF (no flash at all). One of the best flash modes is FLASH ON…which will allow your camera to flash even if it doesn’t think it needs it. If you subject is close, it will fill in shadows, etc.
Resolution Setting • Resolution and Compression determine the total image quality. • Some cameras may not allow you to change the compression. • Always shoot at the highest resolution…you can always make it smaller.
Memory Cards: Each camera comes with a memory card or built-in memory. You can buy larger memory cards to hold more pictures.
Memory Cards We use Compact Flash…and a card reader to transfer images.
LCD screen displays Record menu Play menu Setup menu
Canon G1is first digital to offer ISO 50 ISO Selection Ability to vary “film speed” for lighting conditions ISO 50 ISO 400
Understanding ISO • Just because your camera CAN shoot at HIGH ISO, doesn’t mean you should. • Generally, try to stay one stop lower than the maximum ISO. Example: If your camera’s max ISO is 800…don’t go above 400. • Don’t use Auto ISO. Nikon D200 ISO 1600 Nikon D300 ISO 1600
Picture elements (Pixels) Long history of use in image creation Mosaics in ancient architecture Pointillism art Textiles Printing half tone pictures Electronic picture elements (pixels)
The Pointillist Artist 19th C. French Neo-impressionist painting • Image consists of small dots of paint • Dots (pixels) made with point of brush as small as 1/16 inch • Dots are unequal in size
Other Pointillist works Jean Volet Georges Surrat M. Rysselberghe
Image Printing Screen • Photo screen can be course or fine • Need black ink for single color • Dots not equal size • Eye reads dots as continuous tone image
Computer Picture Elements (Pixels) 36 blank pixels 36 colored pixels 2 pixel horiz line You’ve got the… JAGGIES! 2 pixel vert line 2 pixel diagonal
Low Resolution Computer Graphics Desktop icons are 32x32 Pixels, and are 1024 bytes
Image resolution/quality • Small resolution 640x480 • Fine compression • Increases memory capacity • Medium resolution 1078x760 • Fine compression • Good quality for prints or Net • Large resolution 2048x1576 • Fine compression • Best quality for prints
Exposure Bracketing • Allows taking 3 shots at different exposures • Bracket can be set in 1/3 stop increments • Exposure range can be set to –2 to +2 stops - .7 stop Normal exposure +.7 stop
White Balance • WB corrects for different lighting conditions • Controls on LCD from rear panel button
Zooming the image in LCD Feature allows close examination of image at 2 levels of zoom to check image details…like image focus.
Macro Mode • This mode allows close-ups to 2.4 inches with normal lens at wide zoom • Canon offers a macro lens attachment for closer macro images Normal mode Macro mode