Digital Imaging, Photography, Videography
PhotographyWriting with light
Photography - What is it?What are some of the things it is used for?Visual CommunicationMany different things to different peopleHobby, Avocation, Vocation, Work
Photography - History1839 -160 years of photographyUnique ability of silver to react to light energyWilliam Henry Fox TalbotDaguerreEastman - Kodak
Subtractive Primaries
What is light?Electromagnetic spectrum400-700 nmUltraviolet to InfraredUV shorter than 400 nmIR longer than 700 nmFilms & CCDs(sensors) can record extended range
Photography - What is it?Traditional ProcessLight reacts with silver halideCreates latent image(invisible)Chemical process develops imageproduce negative or positivePrint made from negativePhotographic process repeated
Photography - What is it?Digital ProcessLight reacts with light sensorCCD, CMOSImage stored in memoryImage in memory downloaded or viewed directlyPrint made from digital file
Photographs are converted to bitmapsorCaptured as bitmaps
Movies are captured as a series of bitmapsEach frame = bitmap
Digital ImagesPixels - Picture ElementPixels per inch
Computer GraphicsFile TypesBitmapVector
BitmapsbmpjpegtiffgifPict(combo)Proprietary
Digital ImagesDots per inchLines per inchHalftonesLines per mmhttp://www.ahip.getty.edu/intro_imaging/05-Res.html
VectorEPS(?)AIPictCGMWMF
ScannersDrumFlatbedFilm
ScannersOptical resolutionInterpolated resolution
Scanning SoftwarePhotoshop pluginPhoto DeluxeWang ImagingETC.
ScanningHow much information do you need?Line Art(One Bit - B&W)Output resolutionGrayscale(254 shades of grey w/B&W)No more than 1.5 final LPIColorSame as grey scaleUnless outputting to high resolution film recorderLPI is NOT DPI
Storing Digital ImagesMagneticOpticalArchival
StoragePhoto CDFive Resolutions up to 8X10$2.00 per image100 pictures per CDPicture CD1024X768 = 4X6 inch printPicture Disk640X480 = Computer display
Resolutionhttp://matsone.csuhayward.edu /tms/imaging/dpidemo.htm
Storage SizeMore bitsmore informationBigger sizemore space
CompressionLossless for still picturesLZWLossyJPEGMPEGMPEG2 audio layer 3MP3
Digital CamerasCCDCMOS
Digital CamerasResolutionScreen 640X480Megapixel 1000x10003.3 M approx $800Good quality 8X10
Digital Cameras$300 -1500Kodak, Apple, Ricoh, Epson, Olympus$3000-20,000Nikon, Fuji, CanonDigital Back
Digital CamerasImage Storage in cameraSCSI HDFloppy DiskBuilt-in RAMSmart MediaMemory Stick(SONY)
Digital CamerasImage TransferSerialSCSIParallelUSBFirewire-IEE 1394PCMCIA Card Reader
Digital CamerasNumber of PhotosResolution of Photos
Digital CamerasExposure ControlsLensQualityZoomDigital Zoom/Optical Zoom
Digital CamerasDigital VideoSony DVX 1000(Mini DV)Canon Optura(Mini DV)Sony Digital 8MM(D8)
Digital CamerasDigital VideoStorage tapeCD-RDVD-RDigital information
Analog CaptureVideo cardRegular VCR(NTSC video)DAC(digital to analog conversion)
Digital Stream CaptureFirewireAll ready digitalNo loss in DAC
Capture SoftwarePremiereVideo StudioiMovieFinal Cut ProETC.
Digital CamerasVideo StorageSCSI HDIDE HDCD-RDVD-R1-20 MB per second
Digital ImagesInputProcessingOutput
Using Digital ImagesPublicationPresentationElectronic PublicationEmailTraditional Output
Advanced UsesElectronic DeliveryQTVRStreaming
PlaytimeOlympus 3030StillMovieSmart Media
Working material = lightTools = cameras & filmFinal presentation = print or slideSecondary uses = publications of all types
Working material = lightTools = cameras & filmFinal presentation = print or slideSecondary uses = publications of all types
