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Visuals

Visuals Projection Screens Projection Screens Projection Screens Projection Screens Rule of Thumb for Viewing Angles and Distances Screen Projector Rule of Thumb for Viewing Angles and Distances Screen Silver Lenticuler 40 o Projector Rule of Thumb for Viewing Angles and Distances

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Visuals

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  1. Visuals

  2. Projection Screens

  3. Projection Screens

  4. Projection Screens

  5. Projection Screens

  6. Rule of Thumb for Viewing Angles and Distances Screen Projector

  7. Rule of Thumb for Viewing Angles and Distances Screen Silver Lenticuler 40 o Projector

  8. Rule of Thumb for Viewing Angles and Distances Screen Silver Lenticuler Matte White 40 o 30 o Projector

  9. Rule of Thumb for Viewing Angles and Distances Screen Silver Lenticuler Matte White Glass Beaded 40 o 30 o 20 o Projector

  10. Rule of Thumb for Viewing Angles and Distances Screen Silver Lenticuler Matte White Glass Beaded Sun Screen 40 o 30 o 20 o 15 o Projector

  11. Rule of Thumb for Minimum and Maximum Viewing Distances Screen 2 to 6 rule Silver Lenticuler Matte White 2x width of image Glass Beaded Sun Screen 6x width of image 40 o 30 o 20 o 15 o Projector

  12. Vertical Keystoning

  13. Horizontal Keystoning

  14. ChalkboardDry Erase BoardWhite BoardFlipchart • Inexpensive • Easy to use • Widely available • Chalk dust • May Require practice and prep work to use effectively

  15. Non-projected MaterialsLegibility • 8 feet 1/4 inch (18 pt) • 16 feet 1/2 inch (36 pt) • 32 feet 1 inch (72 pt) • 64 feet 2 inches (144 pt) Max. Anticipated Min. Letter Height Viewing Distance (Lowercase m) One point is equal to .013836 inch

  16. Overhead Projectors • Bright • Use different colors • Prepare materials well before class • Face students while writing • Bulky and difficult to transport • User must stand in one place • May require extra preparation • Film expensive

  17. Overhead Maximum Max. Ratio Min. Letter Hgt. Viewing of Letter Hgt. (Lower case m) Distance to Hgt. of for area 6”x9” Artwork Area • 8H 1 to 50 1/8 inch

  18. Slide Projector • Vivid colors • Can be run automatically • Inexpensive • Slides easily misaligned • Trays spill easily • Darkened room • Order easily changed

  19. Slides Maximum Max. Ratio Min. Letter Hgt. Viewing of Letter Hgt. (Lower case m) Distance to Hgt. of for area 6”x9” Artwork Area • 8H 1 to 50 1/8 inch

  20. Filmstrip Projector • Vivid colors • Can be run automatically • Inexpensive • Filmstrips tear • Fixed order • Darkened room • Dated material?

  21. Filmstrips Maximum Max. Ratio Min. Letter Hgt. Viewing of Letter Hgt. (Lower case m) Distance to Hgt. of for area 6”x9” Artwork Area • 8H 1 to 50 1/8 inch

  22. Film • Multimedia format • Juxtaposes time and space • Color • Depicts movement, animation, process, time, space • Equipment is heavy and expensive • Film is expensive • Subdued light • Knowledge and availability of equipment • Film not used much anymore

  23. Film frame Maximum Max. Ratio Min. Letter Hgt. Viewing of Letter Hgt. (Lower case m) Distance to Hgt. of for area 6”x9” Artwork Area • 8H 1 to 50 1/8 inch

  24. Video • Easy to operate • Normal room lighting • Easy to move forward or back • May be edited • Knowledge of equipment • Video projectors expensive for large groups

  25. DVD • Best quality video and sound • Very easy to cue • Integration with computer • Compact and easy to transport • Knowledge of equipment • Video projectors expensive for large groups

  26. Video/DVD Maximum Max. Ratio Min. Letter Hgt. Viewing of Letter Hgt. (Lower case m) Distance to Hgt. of for area 6”x9” Artwork Area • 16H-24H 1 to 25 1/4-3/8 inch

  27. Direct projection system Stage Lamp Condenser Lens Objective Lens

  28. Indirect projection system Condenser Lens Objective Lens Mirror Stage with slide Lamp

  29. Slide projector

  30. Slide projector $400-800

  31. Filmstrip projector

  32. Filmstrip projector $200 & up

  33. 16 mm film projector • Visual system • Mechanical system • Audio system • Magnetic • Optical

  34. 16 mm film projector • Visual system • 24 frames per second • Persistence of vision • Film actually stops for 1/24 of a second

  35. 16 mm film projector • Visual system • Mechanical system • Audio system • Magnetic • Optical

  36. 16 mm film projector • Audio system • Magnetic • Picture 22 frames behind audio • Tape recorder/player • Optical • Picture 26 frames behind audio • Exciter lamp

  37. 16 mm film projector

  38. 16 mm film projector $600 and up

  39. Indirect projection system Mirror Objective Lens Slide Fresnel lens Lamp

  40. Overhead projector

  41. Overhead projector $200-$800

  42. Reflective projection system

  43. Opaque projector

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