Handbook Digital Photography En

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  • 8/14/2019 Handbook Digital Photography En



    asked questions ondigital photographyThe Olympus Digital Library Volume 5F



    Olympus is a trademark of OLYMPUS

    IMAGING CORP. The names of other

    companies and products are the

    property of their respective owners.

    Frequently Asked Questions on

    Digital Photography

    1999-2006 OLYMPUS IMAGING

    EUROPA GMBH. All rights reserved.

    Reproduction in whole or in part only

    with permission.



    Dealers stamp




  • 8/14/2019 Handbook Digital Photography En


  • 8/14/2019 Handbook Digital Photography En




    Asked QuestionsonDigital Photography

    Digital Library Vol. 5

    Disclaimer: While every endeavour has beenmade to provide accurate information, no liabilitywill be assumed for typographical errors andomissions or technical inaccuracies.

    Concept, editorial and production: united communicationsGmbH, Berlin Print: Druckhaus Haberbeck, Lage/Lippe

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    1. The fascinating world of digital photography 4

    2. Digital camera technology 8

    2.1 How does a digital camera work? 8

    2.2 The CCD chip 9

    2.3 What to look for when buying a digital camera 14

    2.4 Factors affecting image quality 16

    2.5 The importance of a good lens system 19

    2.6 Long-term storage of digital images 22

    2.7 What are the advantages of the cameras LCD? 23

    2.8 Care and maintenance of digital cameras 26

    2.9 Power sources 27

    3. Taking digital pictures 30

    3.1 Metering systems 30

    3.1.1 Exposure metering systems 30

    3.1.2 Focus systems 33

    3.1.3 White balance 343.1.4 Sensitivity 37

    3.2 The camera flash 38

    3.3 Image optimisation systems 40

    3.3.1 TruePic TURBO 40

    3.3.2 Noise reduction 41

    3.3.3 Pixel mapping 42

    3.3.4 BrighCapture Technology 423.3.5 Image stabilisation 43

    3.4 Scene modes 46

    3.5 Manual control 46

    3.5.1 Aperture 47

    3.5.2 Shutter 48

    3.6 Histogram 48

    3.7 Zoom 493.8 Macro shooting 50

    3.9 Panorama 52

    3.10 Sequence shooting 54

    3.11 Self-timer 54

    3.12 B & W and sepia 55

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    3.13 Blackboard/Whiteboard 56

    3.14 Movie mode 57

    3.15 Sound recording 57

    3.16 Underwater photography 57

    3.17 General tips and hints for better photos 59

    4. Printing digital images 62

    4.1 Traditional photos vs. digital photo prints 62

    4.2 Home printing 62

    4.3 Printing services for digital photos 66

    4.4 Enlarging digital prints 68

    5. Archiving digital photos 72

    5.1 Software solutions 72

    5.2 Recommended hardware 74

    5.3 Downloading images from memory cards 75

    5.4 Connecting a digital camera to a computer system 76

    5.5 Important image file formats 775.6 Copying images to DVDs and CDs 80

    6. Compressing image data 82

    6.1 Storage requirements 82

    6.2 The most common compression methods 83

    6.3 Selecting the right compression level 86

    6.4 WinZIP and StuffIt 876.5 Pixel number and compression 88

    6.6 Saving images in different file formats 88

    7. Editing digital images 90

    7.1 Image editing programs 90

    7.2 Sending image files by email 91

    7.3 Transferring digital data with a mobile phone 92

    7.4 Digital images for the internet 93

    7.5 Viewing digital pictures on the TV 94

    8. The A to Z of digital photography 96

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    1. The fascinating world

    of digital photography

    A picture is worth a thousand words. This iscertainly one explanation for why photography

    has lost none of its power to fascinate andenthral in its almost 200-year history.

    Even though cameras were still expensive, heavy,cumbersome and complicated well into the 20thcentury, these failings proved to have littleinfluence on the technologys success. Thereason: for the first time it was possible to capture

    moments in time and illustrate feelings, moodsand desires at more or less the press of a button.Photography was here to stay.

    Whether digital or analogue, in the studio orout in the open, photography is always muchmore than just capturing reality. It is also theinterpretation of what the photographer sees

    and the transformation of this into a new,two-dimensional reality so that the momentcomes back to life when the image is viewed.

    Its a pity then that with conventional analoguephotography the results cannot be seenimmediately, checked or edited until the film hasbeen exposed and developed.

    While the instant photo technology introducedby Polaroid went some way to changing this, itwas digital imaging that really revolutionised thephotographic experience.

    Initially, this new technology was prohibitivelyexpensive and really only attractive to

    technologically adventurous pro users. However,as a result of the internet and email boom, demandfor easy-to-produce and affordable digital imagesrose to unforeseen levels. This, together with theever lower cost of components (LCD displays,

  • 8/14/2019 Handbook Digital Photography En



    CCD chips, etc.), led to the first affordable digitalcameras appearing on the consumer market inthe mid 90s.

    Similar to the development of the computer, digitalphotography has experienced a dramatic increasein performance power. For example, whereas thefirst consumer camera had a resolution of only

    around 300,000 pixels, today there are modelswith eight million pixels or more that not onlymeet the needs of professional photographers butalso fit the price range of amateurs.

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    1. The fascinating world

    of digital photography

    The growth in the number of manually adjustablefunctions is equally impressive. While the earliest

    models featured as good as no individuallyadjustable settings, modern digital cameras areon a par with their analogue counterparts whenit comes to manual control.

    The reasons for the appeal of this imaging tech-nology are manifold. These are just ten examples:

    1. No need to buy film ever again.

    2. Storage media are reusable.

    3. Images can be checked and enjoyedimmediately after capture.

    4. The cameras optical systems are of the

    highest quality. To meet the requirementsof CCD image sensors, the lenses havea resolution superior to those designed foranalogue models.

    5. Silent operation for discreet shooting.

    6. Creative effects possible even at the

    recording stage.

    7. Presentation of the images on a TV(slide show).

    8. No loss of quality when copying andtransferring data.

    9. Editing images later is easy.

    10. Prints can be produced and photos sent viaemail immediately.

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    So, its hardly surprising that the digital cameramarket has been enjoying such an extraordinary

    growth rate. While the number of digital camerassold in 1996 reached just about 1.2 million(of which only 100,000 were sold in Europe),this number had risen to 65 million worldwide in2005, of which 24 million were sold in Europe.

    With so many newcomers to the world of digitalphotography, and because of the rapid develop-

    ment in this field, new questions constantly ariseand older ones go unanswered. Even experienceddigital camera users often find they want torefresh their understanding of the technology.In this booklet we have therefore tried to presentshort, to-the-point answers to frequently askedquestions. We hope that it will serve as an ever-ready reference. Naturally, this brochure will

    not be able to cover all aspects of this complexsubject. We do hope, though, that the FAQwill help you get more enjoyment from digitalphotography and obtain even better results.

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    2.1 How does a digital camera work?

    Basically, digital cameras arent that differentfrom their 35mm counterparts. Both feature thecore elements of lens, aperture and shutter; theonly difference is how they capture and storethe image information. So if you can use a filmcamera, you can shoot with one of these too.

    First, lets look at how an

    analogue camera works.

    Simply put, it consists ofa lens system, an apertureand a shutter. The lenssystem ensures thecaptured image is in focus

    while the aperture and shutter

    control the amount of light reaching the film.As soon as the shutter is released, light is letinto the camera through the lens system andaperture to land on the photosensitive film. Theresulting chemical reaction records the imageon the film surface. This image is then set in thedeveloping process.

    Although digital cameras mayoften look like their analoguecounterparts and share manycomponents, such as the aperture,

    shutter and a lens system,their methods for recordingimages are quite different.Instead of light-sensitive film,

    they use a combinationofCCD chip, imaging processing engine andstorage media to capture the image.

    The heart of the digital camera is hidden behindthe shutter. The CCD (Charge-Coupled Device)

    2. Digital camera technology

    The analogue camera

    The digital camera

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