Basics Of Digital Photography
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Transcript of Basics Of Digital Photography
PowerPoint Presentation
*Pre start topics
OverviewPicture ElementsGeneral camera featuresCamera demo and downloadImage editingPicture samples slide show
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Picture elements
Long history of use in image creation
Mosaics in ancient architecturePointillist school of artTextilesPrinting half tone picturesElectronic picture elements (pixels)
6th Century Italian Mosaics
19th C. French Neo-impressionist paintingThe Pointillist School
Image consists of small dots of paintDots (pixels) made with point of brush as small as 1/16 inchDots are unequal in size
Other Pointillist worksGeorges SurratJean VoletM. Rysselberghe
Textile example hand made stitchery
Image Printing ScreenPhoto screen can be course or fineNeed black ink for single colorDots not equal sizeEye reads dots as continuous tone image
Computer Picture Elements (Pixels)36 blank pixels36 colored pixels2 pixel horiz line2 pixel vert line2 pixel diagonalYouve got JAGGIES!
Low Resolution Computer Graphics
Desktop icons are 32x32Pixels, 1024 bytes
Image Resolution and File Size
24 and 32 bit color depth24 bit = 3 bytes (the RGB model)
32 bit = 4 bytes (the CYMK model
RedGreenBlueCyanYellowMagentaBlackExample (CorelDraw)
Parameters of digital image qualityMonitor dot pitchMonitor dots per inchMonitor calibrationScreen resolution settingMonitor sizeImage resolutionColor depth
Digital CamerasAn exploding marketMajor camera makers now producing digitalsEstimates of market to be 50% digital in 2002Wide range of features and prices
Canon Powershot G16 months on market3.3 Mp sensor chipUnder $1000 classMany features of satisfy beginners or experienced usersHigh image quality
Overview of mega-pixel camerasType 1& 2 CF memory cardsFull exposure controlResolution selectionISO selectionBright LCD screenExternal flash hot shoeZoom capabilityLens converters
LCD screen displaysRecord menuPlay menuSetup menu
Image resolution/qualitySmall resolution 640x480Fine compressionIncreases memory capacity
Medium resolution 1078x760Fine compressionGood quality for prints or Net
Large resolution 2048x1576Fine compressionBest quality for prints
ISO SelectionAbility to vary film speed for lighting conditionsISO 50ISO 400G1is first digital to offer ISO 50
Exposure Mode ControlsAuto (point & shoot)ProgramShutter priorityAperture priority Manual setting
Exposure BracketingAllows taking 3 shots at different exposuresBracket can be set in 1/3 stop incrementsExposure range can be set to 2 to +2 stops
- .7 stopNormal exposure+.7 stop
White BalanceWB corrects for different lighting conditionsControls on LCD from rear panel button
Zooming the image in LCDFeature allows close examination of image at 2 levels of zoom to check image details
Macro ModeThis mode allows close-ups to 2.4 inches with normal lens at wide zoomCanon offers a macro lens attachment for closer macro images
Normal modeMacro mode
Play index Provides view of 9 thumbnails on screenJump mode moves 9 thumbnails sequentially
That is all folks, and thanks for watching
*Pre start topics*