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Digital Cameras An Introduction to Digital Cameras and the Basic Parts of a Canon A85.

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Presentation on theme: "Digital Cameras An Introduction to Digital Cameras and the Basic Parts of a Canon A85."— Presentation transcript:

1 Digital Cameras An Introduction to Digital Cameras and the Basic Parts of a Canon A85

2 One of the 1 st 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)

3 Kodak DCS 620 One of the first 2mp cameras. $10,495

4 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.

5 Canon A85 Many Canon models are very similar to you class camera. Other manufactures will also be similar.





10 Not all Camera CCDs are created Equal… A85 APC Sensor

11 Exposure Mode Controls Auto (point & shoot) Program Shutter priority Aperture priority Manual setting

12 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.

13 SCN: Exposure and White Balance is selected to match the picture you are taking.

14 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.

15 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.

16 Resolution and Compression

17 Memory Cards: Each camera comes with a memory card or built- in memory. You can buy larger memory cards to hold more pictures.

18 Memory Cards We use Compact Flash…and a card reader to transfer images.

19 Video

20 LCD screen displays Record menuPlay menuSetup menu

21 Record Menu Items

22 ISO Selection Ability to vary “film speed” for lighting conditions ISO 50 ISO 400 Canon G1is first digital to offer ISO 50

23 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 1600Nikon D300 ISO 1600


25 Nikon D3 was first to offer the insanely high ISO 25,000

26 Battery Types

27 Battery Life


29 Battery Chargers

30 Battery Charging

31 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 )

32 6 th Century Italian Mosaics

33 19 th C. French Neo-impressionist painting The Pointillist Artist 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

34 Other Pointillist works Georges Surrat Jean Volet M. Rysselberghe

35 Textile example – hand made stitchery

36 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

37 Computer Picture Elements (Pixels) 36 blank pixels36 colored pixels 2 pixel horiz line 2 pixel vert line2 pixel diagonal You’ve got the… JAGGIES!

38 Low Resolution Computer Graphics Desktop icons are 32x32 Pixels, and are 1024 bytes

39 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

40 Image Resolution and File Size



43 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

44 White Balance WB corrects for different lighting conditions Controls on LCD from rear panel button

45 White Balance

46 Nearly Impossible ISO

47 Zooming the image in LCD Feature allows close examination of image at 2 levels of zoom to check image details…like image focus.

48 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 modeMacro mode



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