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Pixel = picture element. The building block of a digital image.

Pixel = picture element. The building block of a digital image. one pixel. Pixel = picture element. The building block of a digital image. More pixels will build a bigger picture. 800px. 4000px. 600px. 480,000 pixels. 12,000,000 pixels. 3000px. Pixel = picture element.

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Pixel = picture element. The building block of a digital image.

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  1. Pixel = picture element. The building block of a digital image. one pixel

  2. Pixel = picture element. The building block of a digital image. More pixels will build a bigger picture. 800px 4000px 600px 480,000 pixels 12,000,000 pixels 3000px

  3. Pixel = picture element. The building block of a digital image. More pixels will build a bigger picture. 800px 4000px 600px 1/2 megapixel 12 megapixel 3000px

  4. A computer screen is nowadays usually set at 1024 x 768 pixels. This is the Screen Resolution. 1024 768

  5. A computer screen is nowadays usually set at 1024 x 768 pixels. A photo sized 1024 x 384 pixels covers half of that screen. 384 1024

  6. A computer screen is nowadays usually set at 1024 x 768 pixels. A photo sized 512 x 384 pixels covers 1/4 of that screen. 384 512

  7. A computer screen is nowadays usually set at 1024 x 768 pixels. Here’s our 1/2 MP image on the screen. 600 800

  8. A computer screen is nowadays usually set at 1024 x 768 pixels. Here’s our 12MP image on the screen. 3000 800 4000

  9. A computer screen is nowadays usually set at 1024 x 768 pixels. Here’s our 12MP image on the screen. 3000 4000

  10. The resolution of images on a computer screen is measured in pixels. 1024 300 x 200 500 x 350 768

  11. The resolution of images on a computer screen is measured in pixels. Our 12MP cannot be resolved on this screen without reducing its size. 300 x 200 500 x 350

  12. Our 12MP cannot be resolved on this screen without reducing its size. 1024 300 x 200 500 x 350 768

  13. Pixel = picture element. The building block of a digital image. More pixels will build a bigger picture. 800px 4000px 600px 1/2 megapixel 12 megapixel 3000px

  14. Camera Image Resolution. More pixels will build a bigger picture. 800px 4000px 600px 1/2 megapixel 12 megapixel 320 x 240 800 x 600 1600 x 1200 2592 x 1944 3264 x 2448 3840 x 2160 4000 x 3000 3000px

  15. Camera Image Resolution. More pixels will build a bigger picture. 800px 4000px 600px 1/2 megapixel 12 megapixel 320 x 240 800 x 600 1600 x 1200 2592 x 1944 3264 x 2448 3840 x 2160 4000 x 3000 3000px

  16. Camera Image Resolution. More pixels will build a bigger picture. 800px 4000px 600px 1/2 megapixel 12 megapixel 320 x 240 800 x 600 1600 x 1200 2592 x 1944 3264 x 2448 3840 x 2160 4000 x 3000 3000px

  17. Printing Resolution

  18. A Which picture has higher resolution? B

  19. A Which picture has higher resolution? B

  20. A Which picture has higher resolution? B

  21. A Which picture has higher resolution? B

  22. A Which picture has higher resolution? B

  23. A NOW… Which picture has higher resolution? B

  24. A NOW… Which picture has higher resolution? B

  25. A Which picture has higher resolution? Both have good resolution! B

  26. A Which picture has higher resolution? What happened? B

  27. A Which picture has higher resolution? What happened? The DPI changed. ( Dots Per Inch ) B

  28. The building block of a digital print. More dots will build a bigger print. DPI - Dots Per Inch

  29. The building block of a digital print. More dots will build a bigger print. DPI - Dots Per Inch

  30. The building block of a digital print. More dots will build a bigger print. DPI - Dots Per Inch

  31. Enlarging a picture “spreads out” the dots - fewer in each square inch.

  32. Enlarging a picture “spreads out” the dots - fewer in each square inch.

  33. Enlarging a picture “spreads out” the dots - fewer in each square inch.

  34. But where do the dots come from?

  35. The dots are pretty much the same as the pixels.

  36. More pixels = more dots = greater enlargement.

  37. More pixels = more dots = greater enlargement.

  38. More pixels = more dots = greater enlargement.

  39. More pixels = more dots = greater enlargement.

  40. More pixels = more dots = greater enlargement.

  41. More pixels = more dots = greater enlargement.

  42. A picture with more pixels can be enlarged more before its resolution starts to deteriorate.

  43. A photo with more pixels can be enlarged more as a print before its resolution starts to deteriorate.

  44. Size of image dictates maximum print enlargement. 2MB 4MB Digital Image Print

  45. exceeding maximum = lower print resolution.

  46. Goal = best print resolution.

  47. 300 DPI - photos in books and better magazines. 170 DPI - photos in newspaper. 300 dpi 170 dpi

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