1. B.Sc. (Hons) Multimedia ComputingMedia Technologies Digital Photography

2. Agenda Digital Principles Camera Types Lens Principles Common Features Legacy Issues B.Sc. (Hons) Multimedia ComputingMedia Technologies

3. Digital Camera Principles

4. Digital Principles Filters Light from scene Sensor Analogue Electrical Signal Analogue to Digital Converter Digital Signal White balance Anti-aliasing Compression Buffer Storage

5. Digital Principles Size of sensor determines resolution of images 3008 2000 3008 x 2000 = 6,016,000 = 6 Megapixels (6MP) Buffer size also important - buffer size determines many images you can take in quick succession

6. Types of Digital Camera

7. Compact rangefinder type cameras -Limited features - aimed at general users ( novice / occasional use) Prosumers Types - aimed at the advanced amateur / semi pro user - more sophisticated functionality - probably has a wide ranging zoom lens - but not interchangeable - affordable price DSLRs (Digital SLRs) full system cameras with interchangeable lenses and other professional accessories such as dedicated flash systems etc. Expensive as compared with prosumer models

8. Digital Camera Types Compact Prosumer DSLR (Full Frame Sensor)

9. Lenses for Digital Cameras

10. Question Are digital camera lenses the same as film camera lenses? Answer Yes - but effect focal length depends on size of digital sensor used in camera Lens image circle coverage Full frame 35mm film gate

11. Lenses Circle Coverage Sensor not full frame thus any lens will have telephoto effect as compared with equivalent film camera lens

12. Full Frame Sensor Sensor full frame thus any lens coverage and focal length the same as for film camera lenses

13. Common Principles

14. Common Photographic Principles Subject Matter ‘The Great Themes’ Portraiture Still Life Landscape Social and Documentary Lighting and Exposure Available light (natural light) Flash Studio Composition - ‘Rule of Thirds’ Gadgets (Lenses, Tripods, Filters, Bags)

15. Flash and Lighting Three Important features of a flashgun 1. Guide Number - indicates light power available e.g (30 Meters at 100 ISO) reasonable power for average use 2. Recycling time - how long (in seconds) flash takes to be ready for next 3. Thru-The Lens (TTL) flash metering Guide number: 165 in feet / 50 in meters 105mm (ISO 100) Charge time: Approx. 6seconds (when using alkaline batteries) Approx 4seconds (when using NiMH batteries)

16. Pro Flash Lighting Guide Number = 60 Metres at ISO 100

17. Pro Lighting -Studio Flash Continuous background paper

18. Product Photography Copy Stands - provide consistent diffuse lighting for photographing product items

19. Flash Photography Tips Use the Flash off-camera Bounce lighting from white surface to diffuse lighting Inverse Square Law - doubling the distance requires four times the light

20. What’s Changed ?

21. Changes in the Digital Era Traditional Photography Take pictures then develop and print using chemical processes in a ‘Darkroom’ - or send to a film lab Digital Photography Take pictures then upload to a computer and edit in graphics application or dedicated software application usually bundled with camera - can take a long time! What images to print - often get left on the computer Professional software available - Aperture and Lightroom Software ‘Media Centres’ replaces the old technology of a slide projector and slide show Take memory card to digital photo booths etc

22. The Darkroom

23. Digital Image Processing in ‘The Light Room’

24. Image Formats and Software Formats Uses established image formats such as JPEG and GIF New formats such as RAW - a raw i.e. ‘unprocessed’ image file contains minimally processed data from the image sensor of a digital camera and must be processed to be used as an editable image such as JPEG or GIF. Contents of RAW files are often considered to be of 'higher quality' than the RGB converted results. RAW files different for each manufacturer - Adobe has developed.DNG Digital NeGative as a de-facto standard for RAW data to encourage usage of a common RAW format to prevent future legacy issues. Software Adobe recently released version one of Lightroom - an integrated digital image editing and photographic library management system (PC & MAC) Aperture - similar to Lightroom - aimed at professionals - already fairly well established in the professional market B.Sc. (Hons) Multimedia ComputingMedia Technologies

25. Legacy Issues

26. Digitizing Legacy Formats Converting film to digital … Scan-in images and transparencies (slides) Scan negatives into a digital format Nikon Coolscan 5000 ED (35mm) Nikon Coolscan 9000 ED 35mm & 120 film (medium format)

27. Converting Film Cameras ? 35mm film cameras have a common film chamber design…

28. Converting Film Cameras Most 35mm film cameras have interchangeable backs e.g. data backs etc.

29. Converting Film Cameras Solution - a digital sensor that fits inside the film chamber and captures images at the film plane

30. Silicon Film... Digital sensor film insert fits most SLR cameras!

31. Silicon Film Cartridge Sensor

32. Silicon Film... Transfer images from cartridge via Photoshop Plug-in

33. Silicon Film: April 2001 Image imported into Photoshop

34. Silicon Film 2002 2003 New 10 MP sensor fits most cameras To be shown at Photokina

35. Software References B.Sc. (Hons) Multimedia ComputingMedia Technologies www.adobe.com - Lightroom tryout www.apple.com - Aperture tryout