Download - Digital Imaging, Photography, Videography. Photography Writing with light.

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Page 1: Digital Imaging, Photography, Videography. Photography Writing with light.

Digital Imaging, Digital Imaging, Photography, Photography, VideographyVideography

Page 2: Digital Imaging, Photography, Videography. Photography Writing with light.

PhotographyPhotography

Writing with light

Page 3: Digital Imaging, Photography, Videography. Photography Writing with light.

Photography - What is it?Photography - What is it?

What are some of the things it is used for?– Visual Communication

Many different things to different people– Hobby, Avocation, Vocation, Work

Page 4: Digital Imaging, Photography, Videography. Photography Writing with light.

Photography - HistoryPhotography - History

1839 -160 years of photographyUnique ability of silver to react to

light energyWilliam Henry Fox TalbotDaguerreEastman - Kodak

Page 5: Digital Imaging, Photography, Videography. Photography Writing with light.

Subtractive PrimariesSubtractive Primaries

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What is light?What is light?

Electromagnetic spectrum– 400-700 nm– Ultraviolet to Infrared

• UV shorter than 400 nm• IR longer than 700 nm

– Films & CCDs(sensors) can record extended range

Page 7: Digital Imaging, Photography, Videography. Photography Writing with light.

Photography - What is it?Photography - What is it?

Traditional Process– Light reacts with silver halide– Creates latent image(invisible)– Chemical process develops image

• produce negative or positive

– Print made from negative• Photographic process repeated

Page 8: Digital Imaging, Photography, Videography. Photography Writing with light.

Photography - What is it?Photography - What is it?

Digital Process– Light reacts with light sensor

• CCD, CMOS

– Image stored in memory– Image in memory downloaded or

viewed directly– Print made from digital file

Page 9: Digital Imaging, Photography, Videography. Photography Writing with light.

Photographs are converted Photographs are converted to bitmapsto bitmapsororCaptured as bitmapsCaptured as bitmaps

Movies are captured as a Movies are captured as a series of bitmapsseries of bitmapsEach frame = bitmapEach frame = bitmap

Page 10: Digital Imaging, Photography, Videography. Photography Writing with light.

Digital ImagesDigital Images

Pixels - Picture ElementPixels per inch

Page 11: Digital Imaging, Photography, Videography. Photography Writing with light.

Computer GraphicsComputer GraphicsFile Types

–Bitmap

–Vector

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BitmapsBitmaps

bmpjpegtiffgifPict(combo)Proprietary

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Digital ImagesDigital Images

Dots per inchLines per inch

– Halftones

Lines per mmhttp://www.ahip.getty.edu/intro

_imaging/05-Res.html

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VectorVectorEPS(?)AIPictCGMWMF

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ScannersScannersDrumFlatbedFilm

Page 16: Digital Imaging, Photography, Videography. Photography Writing with light.

ScannersScannersOptical resolutionInterpolated resolution

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Scanning SoftwareScanning Software

Photoshop pluginPhoto DeluxeWang ImagingETC.

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ScanningScanning

How much information do you need?How much information do you need?– Line Art(One Bit - B&W)Line Art(One Bit - B&W)

• Output resolutionOutput resolution

– Grayscale(254 shades of grey w/B&W)Grayscale(254 shades of grey w/B&W)• No more than 1.5 final LPINo more than 1.5 final LPI

– ColorColor• Same as grey scaleSame as grey scale

• Unless outputting to highUnless outputting to high resolution film recorderresolution film recorder

LPI is NOT DPILPI is NOT DPI

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Storing Digital ImagesStoring Digital Images

MagneticOptical

–Archival

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StorageStoragePhoto CDPhoto CD

– Five Resolutions up to 8X10Five Resolutions up to 8X10• $2.00 per image$2.00 per image

• 100 pictures per CD100 pictures per CD

Picture CDPicture CD– 1024X768 = 4X6 inch print1024X768 = 4X6 inch print

Picture DiskPicture Disk– 640X480 = Computer display640X480 = Computer display

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ResolutionResolutionhttp://http://matsonematsone..csuhaywardcsuhayward..eduedu//

tmstms/imaging//imaging/dpidemodpidemo..htmhtm

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Storage SizeStorage SizeMore bitsMore bits

–more informationmore information

Bigger sizeBigger size–more spacemore space

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CompressionCompressionLossless for still picturesLossless for still pictures

–LZWLZWLossyLossy

–JPEGJPEG

–MPEGMPEG

• MPEG2 audio layer 3MPEG2 audio layer 3–MP3MP3

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Digital CamerasDigital CamerasCCDCCDCMOSCMOS

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Digital CamerasDigital Cameras

ResolutionResolution–Screen 640X480Screen 640X480

–Megapixel 1000x1000Megapixel 1000x1000• 3.3 M approx $8003.3 M approx $800

• Good quality 8X10Good quality 8X10

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Digital CamerasDigital Cameras

$300 -1500$300 -1500

–Kodak, Apple, Ricoh, Epson, Kodak, Apple, Ricoh, Epson, OlympusOlympus

$3000-20,000$3000-20,000

–Nikon, Fuji, CanonNikon, Fuji, CanonDigital BackDigital Back

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Digital CamerasDigital CamerasImage Storage in cameraImage Storage in camera

– SCSI HDSCSI HD

– Floppy DiskFloppy Disk

– Built-in RAMBuilt-in RAM

– Smart MediaSmart Media

– Memory Stick(SONY)Memory Stick(SONY)

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Digital CamerasDigital Cameras

Image TransferImage Transfer– SerialSerial– SCSISCSI– ParallelParallel– USBUSB– Firewire-IEE 1394Firewire-IEE 1394– PCMCIA Card ReaderPCMCIA Card Reader

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Digital CamerasDigital Cameras

Number of PhotosResolution of Photos

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Digital CamerasDigital Cameras

Exposure ControlsLens

–Quality

–Zoom

–Digital Zoom/Optical Zoom

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Digital CamerasDigital Cameras

Digital Video–Sony DVX 1000(Mini DV)

–Canon Optura(Mini DV)

–Sony Digital 8MM(D8)

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Digital CamerasDigital Cameras

Digital Video–Storage tape

–CD-R

–DVD-R

Digital information

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Analog CaptureAnalog Capture

Video cardRegular VCR(NTSC video)DAC(digital to analog

conversion)

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Digital Stream CaptureDigital Stream Capture

FirewireAll ready digitalNo loss in DAC

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Capture SoftwareCapture Software

PremiereVideo StudioiMovieFinal Cut ProETC.

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Digital CamerasDigital CamerasVideo Storage

– SCSI HD

– IDE HD

– CD-R

– DVD-R

1-20 MB per second

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Digital ImagesDigital ImagesInputProcessingOutput

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Using Digital ImagesUsing Digital Images

PublicationPresentationElectronic PublicationEmailTraditional Output

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Advanced UsesAdvanced UsesElectronic Delivery

–QTVR

–Streaming

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PlaytimePlaytime

Olympus 3030–Still

–Movie

–Smart Media

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